D — https://taobao.com | BeaverCheck Audit

Site Health

Score: 68 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Several missing protections leave your users and data exposed.

Major barriers for users with disabilities — up to 15% of your audience.

Well-optimized for search — your content is discoverable.

Solid infrastructure — fast server responses across the board.

Several regulatory requirements are not yet met.

Missing metadata means poor previews on social media and search.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

Cart Functionality sites average 72

At average

Better than 5% of Cart Functionality sites See full Cart Functionality benchmark →

core-js sites average 72

At average

Better than 4% of core-js sites See full core-js benchmark →

Top Priorities (5)

Content-Security-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

No Content-Security-Policy header found

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy

1 control(s) without accessible label

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Form Accessibility

48 image-in-link without alt text

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Alt Text Quality

55 image-only link(s) without alt text

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Link & Button Quality

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

Embed this badge

Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Ftaobao.com)](https://beavercheck.com/results/c3bf0ecd-5de2-49cb-861f-48addde6a006)

HTML

<a href="https://beavercheck.com/results/c3bf0ecd-5de2-49cb-861f-48addde6a006"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Ftaobao.com" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Ftaobao.com

This badge auto-updates with your latest scan result.

What fixing these means

Your site has several issues that may be affecting user experience and business outcomes. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.

2 security gaps detected — browsers may warn visitors about your site.

3 accessibility issues exclude users who rely on assistive technology.

Could reach Estimate based on resolving critical issues

Conversion Barriers

3 critical 8 warning

11 barrier(s) likely increasing bounce by ~34%.

Speed (2)

Page takes 7.4s to load

+12% bounce

Users abandon at ~3s — you're 4.9s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Page feels frozen for 6.4s

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Usability (1)

1 form field(s) without a label

+2% bounce

Screen readers skip unlabeled fields; autofill can't identify them; checkout abandonment spikes

Fix: Associate every input with a visible <label for="…">; add autocomplete attributes

Content (3)

No Open Graph tags

+2% bounce

Links shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop

Fix: Add og:title, og:description, og:image, og:url to the page head

No structured data

+2% bounce

No rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices

Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)

Content is hard to read

+2% bounce

Graduate-level reading difficulty — limits the addressable audience for product or blog pages

Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60

Navigation (3)

6 link(s) with generic text ("click here", "read more")

+1% bounce

Screen-reader users navigating by link list see no context — and search engines can't infer relevance

Fix: Rewrite with descriptive phrases that identify the destination

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

7 broken link(s) on the page

+5% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

¥1,925 investment → ¥20,616/month returns + CNY 50,000,000 risk avoided

Payback period: < 1 month First-year ROI: +12752%

Investment

¥1,925

6h · 5 findings

Monthly returns

¥20,616 /mo

~¥247,395 / year

Conversions recovered ¥20,613
Bandwidth savings ¥3.19

Regulatory risk avoided

CNY 50,000,000

if kept compliant

PIPL CNY 50,000,000

Payback period

0 12mo 24mo

¥350 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

¥1,925

5.5 developer hours at ¥350/hr

Based on China rates (¥350/hr)

Quick wins

¥350 2 fixes in ~60 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

¥ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

¥4,166,670 / month at risk

~¥50,000,038 / year if left unfixed

Compliance Risk

¥50,000,000

PIPL

No privacy policy link detected
PIPL: CNY 100,000 – CNY 50,000,000
Trackers detected but no cookie policy found
PIPL: CNY 100,000 – CNY 50,000,000
Trackers detected but no privacy policy found
PIPL: CNY 100,000 – CNY 50,000,000

+1 more

Bandwidth Waste

¥3.19 /mo

5578.6 MB/mo × 0.571 CNY/GB

Optimize transfer: save ~558 KB per page load
Saves ¥3.19/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue

Current bounce (est.)

After fixes (est.)

Estimated bounce reduction

Fix 5 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

4.46 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

7.36 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

6.42 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

8.55 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

20.00 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG

nodeLabel: 淘票票

path: 1,HTML,1,BODY,2,DIV,0,DIV,0,DIV,2,DIV,0,DIV,0,DIV,0,A,0,IMG

selector: div.icons3-wrapper-inner > div.icons3-item-wrapper-first > a.icons3-item > img.icons3-item-img

snippet: <img class="icons3-item-img" draggable="true" src="//gw.alicdn.com/imgextra/i2/O1CN01qrrUAN1wRjrhtfk6Q_!!6000000006305-2-tps-…" alt="淘票票">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	3600.0 s	56.5 KiB
ugcdn.taobao.com/app/starlink/core/m.js?id=2690	0.0 ms	26.5 KiB
ugcdn.taobao.com/app/starlink/core/m.js?id=2690	0.0 ms	26.5 KiB
ugcdn.taobao.com/app/starlink/core/m.js?id=2690	0.0 ms	26.5 KiB
ugcdn.taobao.com/app/starlink/core/index.js?id=169	0.0 ms	26.5 KiB
g.alicdn.com/??/AWSC/AWSC/awsc.js,/sd/baxia/2.5.31/baxiaCommon.js	7200.0 s	17.4 KiB
o.alicdn.com/baxia/baxia-entry-gray/index.js	15.0 s	6.6 KiB
o.alicdn.com/baxia/baxia-entry-gray/index.js	15.0 s	6.6 KiB
g.alicdn.com/AWSC/AWSC/awsc.js	7200.0 s	3.9 KiB
g.alicdn.com/AWSC/AWSC/awsc.js	7200.0 s	3.9 KiB
o.alicdn.com/baxia/baxia-entry-gray/index.js	15.0 s	314 B
/nocaptcha/initialize.jsonp?a=CF_APP_TBLogin_PC&t=7f936fa...	0.0 ms	277 B
/nocaptcha/initialize.jsonp?a=CF_APP_TBLogin_PC&t=7f939fa...	0.0 ms	276 B
/nocaptcha/initialize.jsonp?a=CF_APP_TBLogin_PC&t=7f936fa...	0.0 ms	275 B
o.alicdn.com/baxia/baxia-entry-gray/index.js	15.0 s	203 B
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	3600.0 s	0 B
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	3600.0 s	0 B
g.alicdn.com/??/AWSC/AWSC/awsc.js,/sd/baxia/2.5.31/baxiaCommon.js	7200.0 s	0 B
g.alicdn.com/??/AWSC/AWSC/awsc.js,/sd/baxia/2.5.31/baxiaCommon.js	7200.0 s	0 B
g.alicdn.com/AWSC/AWSC/awsc.js	7200.0 s	0 B
g.alicdn.com/AWSC/AWSC/awsc.js	7200.0 s	0 B

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.2 s

URL	Time Spent
taobao.com/	1.4 s
www.taobao.com/	751 ms
main.m.taobao.com/?sprefer=sypc00	0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 150 ms 21.5 KiB

URL	Transfer Size	Est Savings
g.alicdn.com/dinamic/h5-tb-home/3.3.45/index.min.js	104.9 KiB	21.5 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 150 ms 542.4 KiB

URL	Transfer Size	Est Savings
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	228.2 KiB	136.5 KiB
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	228.2 KiB	136.5 KiB
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	228.2 KiB	136.3 KiB
g.alicdn.com/dinamic/h5-tb-home/3.3.45/index.min.js	104.6 KiB	35.1 KiB
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	56.1 KiB	32.7 KiB
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	56.1 KiB	32.6 KiB
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	56.1 KiB	32.6 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	3.8 s	3.4 s	342 ms
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	3.0 s	2.1 s	380 ms
Unattributable	2.2 s	704 ms	0.0 ms
g.alicdn.com/AWSC/WebUMID/1.93.0/um.js	1.7 s	687 ms	86 ms
g.alicdn.com/AWSC/et/1.83.41/et_f.js	1.7 s	1.5 s	141 ms
g.alicdn.com/AWSC/uab/1.140.0/collina.js	590 ms	430 ms	145 ms
g.alicdn.com/alilog/mlog/aplus_v2.js	557 ms	428 ms	110 ms
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	404 ms	243 ms	124 ms
main.m.taobao.com/?sprefer=sypc00	342 ms	77 ms	3.1 ms
/login.htm?redirectURL=https%3A%2F%2Fh5api.m.taobao.com%3...	321 ms	43 ms	22 ms
g.alicdn.com/dinamic/h5-tb-home/3.3.45/index.min.js	238 ms	172 ms	62 ms
g.alicdn.com/mtb/lib-mtop/2.6.1/mtop.js	201 ms	174 ms	17 ms
g.alicdn.com/??/AWSC/AWSC/awsc.js,/sd/baxia/2.5.31/baxiaCommon.js	193 ms	128 ms	27 ms
/??jstracker/sdk-assests/5.6.29/index.js,universal/polyfi...	191 ms	125 ms	9.9 ms
/h5/mtop.taobao.wireless.home.awesome.h5.get/1.0/?jsv=2.6...	183 ms	129 ms	4.3 ms
ugcdn.taobao.com/app/starlink/core/m.js?id=2690	170 ms	112 ms	40 ms
g.alicdn.com/sd/baxia/2.5.36/baxiaCommon.js	146 ms	123 ms	4.7 ms
ugcdn.taobao.com/app/starlink/core/index.js?id=169	143 ms	126 ms	13 ms
g.alicdn.com/alilog/mlog/aplus_wap.js	128 ms	93 ms	32 ms
/login.htm?redirectURL=https%3A%2F%2Fh5api.m.taobao.com%3...	122 ms	23 ms	8.8 ms
/login.htm?redirectURL=https%3A%2F%2Fh5api.m.taobao.com%3...	110 ms	21 ms	7.9 ms
o.alicdn.com/baxia/baxia-entry-gray/index.js	96 ms	77 ms	9.7 ms
g.alicdn.com/secdev/sufei_data/3.9.14/index.js	79 ms	64 ms	14 ms
/h5/com.taobao.wireless.chanel.realtimerecommond/2.0/?jsv...	56 ms	50 ms	4.5 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	11.2 s
Other	1.8 s
Style & Layout	1.7 s
Script Parsing & Compilation	1.6 s
Garbage Collection	235 ms
Parse HTML & CSS	129 ms
Rendering	115 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in the main frame.	Actionable
The page has an unload handler in a sub frame.	Actionable

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Optimize DOM size

●Font display

●Forced reflow

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Reduce unused CSS

●Avoids enormous network payloads Total size was 1,816 KiB

●Avoid long main-thread tasks 20 long tasks found

●Image elements have explicit `width` and `height`

●Network Requests

●Network Round Trip Times 260 ms

●Server Backend Latencies 180 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 10 ms

●Avoid large layout shifts 4 layout shifts found

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.sc-ifAKCX > div.topbar-wrapper > div.topbar-hd > img.logo `div.sc-ifAKCX > div.topbar-wrapper > div.topbar-hd > img.logo`
div.topbar-wrapper > div.topbar-ld > div > img.signIn `div.topbar-wrapper > div.topbar-ld > div > img.signIn`
body > div.J_MIDDLEWARE_FRAME_WIDGET > div > img `body > div.J_MIDDLEWARE_FRAME_WIDGET > div > img`
body > div#tcodeSideBar > img `body > div#tcodeSideBar > img`
body > div#tcodeSideBar > img `body > div#tcodeSideBar > img`
body > div.J_MIDDLEWARE_FRAME_WIDGET > div > img `body > div.J_MIDDLEWARE_FRAME_WIDGET > div > img`

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body > div.J_MIDDLEWARE_FRAME_WIDGET > iframe `body > div.J_MIDDLEWARE_FRAME_WIDGET > iframe`
body > div.J_MIDDLEWARE_FRAME_WIDGET > iframe `body > div.J_MIDDLEWARE_FRAME_WIDGET > iframe`
body > div.baxia-dialog > div.baxia-dialog-content > iframe#baxia-dialog-content `body > div.baxia-dialog > div.baxia-dialog-content > iframe#baxia-dialog-content`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Internationalization and localization

If a page doesn't specify a `lang` attribute, a screen reader assumes that the page is in the default language that the user chose when setting up the screen reader. If the page isn't actually in the default language, then the screen reader might not announce the page's text correctly. Learn more about the `lang` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html `html`

These are opportunities to improve the interpretation of your content by users in different locales.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
head > meta `head > meta`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●Buttons have an accessible name

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

●Links have a discernible name

●Touch targets have sufficient size and spacing.

●Document has a main landmark.

●The page contains a heading, skip link, or landmark region

●Image elements do not have `[alt]` attributes that are redundant text.

○`[accesskey]` values are unique

○`[aria-*]` attributes match their roles

○`button`, `link`, and `menuitem` elements have accessible names

○ARIA attributes are used as specified for the element's role

○Deprecated ARIA roles were not used

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○`[aria-hidden="true"]` elements do not contain focusable descendents

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements use only permitted ARIA attributes

○`[role]`s have all required `[aria-*]` attributes

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○`[role]` values are valid

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○`[aria-*]` attributes have valid values

○`[aria-*]` attributes are valid and not misspelled

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○Heading elements appear in a sequentially-descending order

○`<html>` element has a valid value for its `[lang]` attribute

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○Links are distinguishable without relying on color.

○Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

○List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○No element has a `[tabindex]` value greater than 0

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Identical links have the same purpose.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URL	Request Resolution
/tbopen/index.html?h5Url=https%3A%2F%2Fm.taobao.com%2Find...	Allowed

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Unload event listeners are deprecated and will be removed.	g.alicdn.com/AWSC/et/1.83.41/et_f.js line 1, col 263123

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/uab/1.140.0/collina.js line 1, col 28648	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/secdev/sufei_data/3.9.14/index.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/uab/1.140.0/collina.js line 1, col 28648	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/uab/1.140.0/collina.js line 1, col 28648	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/secdev/sufei_data/3.9.14/index.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/secdev/sufei_data/3.9.14/index.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/secdev/sufei_data/3.9.14/index.js	`Permissions policy violation: gyroscope is not allowed in this document.`
g.alicdn.com/secdev/sufei_data/3.9.14/index.js	`Permissions policy violation: gyroscope is not allowed in this document.`
g.alicdn.com/secdev/sufei_data/3.9.14/index.js	`Permissions policy violation: gyroscope is not allowed in this document.`

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Detected JavaScript libraries

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Crawling and Indexing

Search engines are unable to include your pages in search results if they don't have permission to crawl them. Learn more about crawler directives.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Blocking Directive Source
`https://main.m.taobao.com/robots.txt`

To appear in search results, crawlers need access to your app.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.sc-ifAKCX > div.topbar-wrapper > div.topbar-hd > img.logo `div.sc-ifAKCX > div.topbar-wrapper > div.topbar-hd > img.logo`
div.topbar-wrapper > div.topbar-ld > div > img.signIn `div.topbar-wrapper > div.topbar-ld > div > img.signIn`
body > div.J_MIDDLEWARE_FRAME_WIDGET > div > img `body > div.J_MIDDLEWARE_FRAME_WIDGET > div > img`
body > div#tcodeSideBar > img `body > div#tcodeSideBar > img`
body > div#tcodeSideBar > img `body > div#tcodeSideBar > img`
body > div.J_MIDDLEWARE_FRAME_WIDGET > div > img `body > div.J_MIDDLEWARE_FRAME_WIDGET > div > img`

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.49 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

3.94 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

1.05 s

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.044

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

4.92 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

7.46 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
o.alicdn.com/tbpc/traceSDK/index.umd.js	300.0 s	133.2 KiB
o.alicdn.com/tbhome/tbnav/index.js	300.0 s	113.5 KiB
o.alicdn.com/tbpc/securitySDK/securitySDK.umd.js	300.0 s	62.5 KiB
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	3600.0 s	56.5 KiB
push-v1.taobao.com/app/tbpc/tb-web-push/dist/site-push.js	300.0 s	17.2 KiB
g.alicdn.com/??/AWSC/AWSC/awsc.js,/sd/baxia/2.5.31/baxiaCommon.js	7200.0 s	17.5 KiB
push-v1.taobao.com/app/tbpc/tb-web-push/dist/global-request-permission.js	300.0 s	11.9 KiB
o.alicdn.com/baxia/baxia-entry-gray/index.js	15.0 s	6.6 KiB
o.alicdn.com/baxia/baxia-entry-gray/index.js	15.0 s	6.6 KiB
g.alicdn.com/sd/baxia-entry/baxiaCommon.js	3600.0 s	7.1 KiB
o.alicdn.com/vip/lib-auto-login/plugin.js	300.0 s	5.4 KiB
g.alicdn.com/AWSC/AWSC/awsc.js	7200.0 s	3.9 KiB
g.alicdn.com/AWSC/AWSC/awsc.js	7200.0 s	3.9 KiB
g.alicdn.com/sd/ncpc/nc.css?t=2019082016	3600.0 s	3.5 KiB
/nocaptcha/initialize.jsonp?a=CF_APP_TBLogin_PC&t=977b7ea...	0.0 ms	277 B
/nocaptcha/initialize.jsonp?a=CF_APP_TBLogin_PC&t=977b7ea...	0.0 ms	277 B
o.alicdn.com/baxia/baxia-entry-gray/index.js	15.0 s	244 B
/ts?url=&token=gIBm_H65wXm_JEuzKVJbwWibWhVJhK96ONH9WdLaaU...	0.0 ms	140 B
/ts?url=&token=BHJyqJAPT2zFeHNQcbTn3SVww7FUA3ad0P-KBzxLni...	0.0 ms	59 B
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	3600.0 s	0 B
g.alicdn.com/??/AWSC/AWSC/awsc.js,/sd/baxia/2.5.31/baxiaCommon.js	7200.0 s	0 B
g.alicdn.com/sd/ncpc/nc.css?t=2019082016	3600.0 s	0 B
g.alicdn.com/AWSC/AWSC/awsc.js	7200.0 s	0 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:144.791 source:map[column:78455 line:1 type:source-location url:https://g.alicdn.com/tbpc/polyfill/1.0.0/index.umd.es5.production.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:0.953 source:map[column:406081 line:0 type:source-location url:https://g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/478.js urlProvider:network]] map[reflowTime:43.355 source:map[column:166770 line:0 type:source-location url:https://g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/framework.js urlProvider:network]] map[reflowTime:104 source:map[column:767338 line:0 type:source-location url:https://g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/478.js urlProvider:network]] map[reflowTime:9.962 source:map[column:231869 line:1 type:source-location url:https://g.alicdn.com/main-search/new-search-suggest/2.14.1/bundle.js urlProvider:network]] map[reflowTime:10.07 source:map[column:283713 line:1 type:source-location url:https://g.alicdn.com/main-search/new-search-suggest/2.14.1/bundle.js urlProvider:network]] map[reflowTime:6.841 source:map[column:26184 line:0 type:source-location url:https://g.alicdn.com/??mtb/lib-promise/3.1.3/polyfillB.js,mtb/lib-mtop/2.7.3/mtop.js,jstracker/sdk-assests/5.7.7/index.js,mtb/lib-env/3.0.0/index.min.js urlProvider:network]] map[reflowTime:19.095 source:map[type:text value:[unattributed]]] map[reflowTime:0.373 source:map[column:152054 line:0 type:source-location url:https://x.alicdn.com/vip/havana-nlogin/0.10.35/index.js urlProvider:network]] map[reflowTime:0.382 source:map[column:152054 line:0 type:source-location url:https://x.alicdn.com/vip/havana-nlogin/0.10.35/index.js urlProvider:network]] map[reflowTime:0.827 source:map[column:718132 line:0 type:source-location url:https://g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/478.js urlProvider:network]] map[reflowTime:0.429 source:map[column:4620 line:5 type:source-location url: urlProvider:network]] map[reflowTime:0.363 source:map[column:4620 line:5 type:source-location url: urlProvider:network]] map[reflowTime:0.721 source:map[column:6325 line:4 type:source-location url:https://g.alicdn.com/sd/ncpc/nc.js?t=2015052012 urlProvider:network]] map[reflowTime:0.362 source:map[column:6325 line:4 type:source-location url:https://g.alicdn.com/sd/ncpc/nc.js?t=2015052012 urlProvider:network]] map[reflowTime:0.366 source:map[column:52069 line:0 type:source-location url:https://g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js urlProvider:network]] map[reflowTime:0.339 source:map[column:52069 line:0 type:source-location url:https://g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js urlProvider:network]] map[reflowTime:0.22 source:map[column:4197 line:5 type:source-location url:https://g.alicdn.com/sd/ncpc/nc.js?t=2015052012 urlProvider:network]] map[reflowTime:0.21 source:map[column:154411 line:0 type:source-location url:https://g.alicdn.com/AWSC/WebUMID/1.93.0/um.js urlProvider:network]]]

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:735.977 label:Time to first byte subpart:timeToFirstByte] map[duration:1500.785 label:Resource load delay subpart:resourceLoadDelay] map[duration:31.83 label:Resource load duration subpart:resourceLoadDuration] map[duration:286.996 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-IMG

nodeLabel: body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG

path: 1,HTML,1,BODY,9,DIV,0,DIV,0,IMG

selector: body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG

snippet: <img class="superbanner-background-image--GhTuMTaG" src="https://img.alicdn.com/imgextra/i3/O1CN01mJphmK1zHA1IbQhHu_!!6000000006688…">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-IMG

nodeLabel: body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG

path: 1,HTML,1,BODY,9,DIV,0,DIV,0,IMG

selector: body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG

snippet: <img class="superbanner-background-image--GhTuMTaG" src="https://img.alicdn.com/imgextra/i3/O1CN01mJphmK1zHA1IbQhHu_!!6000000006688…">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
g.alicdn.com/tbpc/polyfill/1.0.0/index.umd.es5.production.js	78.0 KiB	163 ms
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/478.js	383.9 KiB	327 ms
o.alicdn.com/tbhome/tbnav/index.js	113.5 KiB	207 ms
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/457.js	46.3 KiB
o.alicdn.com/tbpc/securitySDK/securitySDK.umd.js	62.5 KiB	124 ms
o.alicdn.com/tbpc/traceSDK/index.umd.js	133.2 KiB	420 ms
/code/lib/??react/18.2.0/umd/react.production.min.js,reac...	53.7 KiB	123 ms
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/framework.js	63.7 KiB
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/main.js	3.4 KiB
/??mtb/lib-promise/3.1.3/polyfillB.js,mtb/lib-mtop/2.7.3/...	25.4 KiB
g.alicdn.com/code/npm/@ali/privacy-sdk/0.0.1/index.js	9.6 KiB
g.alicdn.com/AWSC/AWSC/awsc.js	3.9 KiB
g.alicdn.com/sd/baxia-entry/baxiaCommon.js	7.1 KiB
g.alicdn.com/main-search/new-search-suggest/2.14.1/bundle.js	82.1 KiB	123 ms
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/p_index.js	1.7 KiB
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/29107295.js	24.9 KiB
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/css/478.css	46.8 KiB
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/css/a3b34c1b.css	23.9 KiB
g.alicdn.com/tbpc/font/1.0.0/index.umd.es5.production.css	10.6 KiB	207 ms
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/css/main.css	2.4 KiB
g.alicdn.com/main-search/new-search-suggest/2.14.1/bundle.css	5.9 KiB

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
at.alicdn.com/t/a/font_403341_z4ofl26w68.woff2?t=1750744474570	5.0 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
限时秒杀5折起券后低至7.7折起官方立减商品8.8折起 `div.slick-slide > div > div > a.home-ad-banner-item`	/imgextra/i4/O1CN01xOFPlo1KANunNUDmO_!!6000000001123-1-tp...	1.2 MiB	960.9 KiB
logo `div.top-wrap > div.tbh-logo-right > a.logo > img.logo-img`	/imgextra/i3/O1CN010P8Pzl1CDZjGGI9xl_!!6000000000047-1-tp...	466.5 KiB	425.7 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i2/3129083788/O1CN01QZHz1V1dqxN2y2LsT_!!461...	66.0 KiB	59.8 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i3/2214396963107/O1CN017vhB7s1Yp3hx05ua5_!!...	65.4 KiB	59.2 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i2/2216780592294/O1CN01mCE8SZ1SohhlTZHIQ_!!...	57.5 KiB	51.2 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i3/2539394293/O1CN016RMw5A1haFRZvegHi_!!253...	54.2 KiB	48.0 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i1/2209091478473/O1CN01gS4wZj2CSgdXg1T0b_!!...	42.2 KiB	36.0 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i3/2208122171775/O1CN01xit2yg1Oz058FKf2G_!!...	40.5 KiB	34.3 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i1/2083840680/O1CN01JF6uFZ1GtUSWPYQa5_!!208...	37.4 KiB	31.2 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i4/3329349188/O1CN01kPPXTQ2HkA8YLVqze_!!332...	34.3 KiB	28.1 KiB
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`	/bao/upload/O1CN01UkqfOC1nAxELrX7e1_!!6000000005050-2-yin...	27.6 KiB	26.0 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i4/2219165867776/O1CN01lnmgqH27JSujU7YYu_!!...	29.9 KiB	24.5 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i3/2222064679063/O1CN01apPbfw2Goug6uCbHf_!!...	28.2 KiB	23.1 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i3/1982056672/O1CN01opDcf01z9papNJcuX_!!198...	26.6 KiB	21.8 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i3/4176601222/O1CN01PA7Ous1Ktj74dto80_!!461...	26.0 KiB	21.3 KiB
全部频道 `li.nav-item > a.nav-link > div > img`	/imgextra/i4/O1CN017Bbrh31ckG00PGimR_!!6000000003638-1-tp...	21.4 KiB	21.0 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i2/2219494975726/O1CN011OL7kQ1sAYzBZZenD_!!...	21.1 KiB	17.3 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i2/2221636305730/O1CN01lRY7i71sCOa7rySnR~cr...	19.8 KiB	16.3 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i4/2221215199676/O1CN01jOm61Q2LLfSnlPbFH_!!...	18.2 KiB	14.9 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i3/155546711/O1CN01gGIicC1zRh7diZmTx~crop,0...	18.1 KiB	14.8 KiB
body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG `body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG`	/imgextra/i3/O1CN01mJphmK1zHA1IbQhHu_!!6000000006688-2-tp...	17.5 KiB	13.2 KiB
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`	/bao/upload/O1CN01HEJEKm1kWzRIXrv3g_!!6000000004692-2-yin...	12.3 KiB	11.4 KiB
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`	/bao/upload/O1CN01aKo1xW1Vjc7Nua5Ec_!!6000000002689-0-yin...	11.8 KiB	10.9 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i2/872777610/O1CN01wdbaCp265RC9HtuGQ~hdr~li...	17.6 KiB	10.0 KiB
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`	/bao/uploaded/i4/3479882666/O1CN01ddTSZY1VZ4ynDxNRK_!!461...	11.9 KiB	9.8 KiB
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`	/bao/upload/O1CN01u61q3N1J3gUgdV2aN_!!6000000000973-2-yin...	9.5 KiB	8.8 KiB
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`	/imgextra/jz3_4/O1CN01GhA7HY1Q2x5Ppna08_!!6000000001919-2...	8.0 KiB	7.9 KiB
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`	/bao/upload/O1CN01tm7NEy1rhhmrSv9tO_!!6000000005663-2-yin...	8.6 KiB	7.9 KiB
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...	6.4 KiB	6.3 KiB
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`	/imgextra/jz3_2/O1CN01my7jsY1DB78Z05moQ_!!6000000000177-2...	5.7 KiB	5.6 KiB
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`	/imgextra/jz3_3/O1CN01yBP4cG1idjz3fYdBy_!!6000000004436-2...	4.7 KiB	4.6 KiB
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`	/imgextra/jz3_2/O1CN01vodaoP1zGF883cbFa_!!6000000006686-2...	4.7 KiB	4.6 KiB
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i1/O1CN01OM0NTj1JPfW2zGKsi_!!6000000001021-2-tp...	4.6 KiB	4.4 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 905 ms

URL	Time Spent
taobao.com/	905 ms
www.taobao.com/	0.0 ms

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 80 ms 109.7 KiB

URL	Transfer Size	Est Savings
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/478.js	383.6 KiB	109.7 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 160 ms 76.5 KiB

URL	Transfer Size	Est Savings
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/css/478.css	46.5 KiB	42.6 KiB
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/css/a3b34c1b.css	23.6 KiB	23.5 KiB
g.alicdn.com/tbpc/font/1.0.0/index.umd.es5.production.css	10.3 KiB	10.3 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

Source: Google web.dev / Lighthouse

Estimated savings: 400 ms 916.3 KiB

URL	Transfer Size	Est Savings
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/478.js	383.6 KiB	238.1 KiB
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	228.2 KiB	139.1 KiB
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	228.2 KiB	139.1 KiB
o.alicdn.com/tbpc/traceSDK/index.umd.js	132.7 KiB	73.3 KiB
o.alicdn.com/tbhome/tbnav/index.js	112.4 KiB	47.1 KiB
g.alicdn.com/tbpc/polyfill/1.0.0/index.umd.es5.production.js	77.7 KiB	46.6 KiB
/code/lib/??react/18.2.0/umd/react.production.min.js,reac...	53.4 KiB	45.7 KiB
g.alicdn.com/main-search/new-search-suggest/2.14.1/bundle.js	81.4 KiB	45.5 KiB
o.alicdn.com/tbpc/securitySDK/securitySDK.umd.js	62.1 KiB	35.5 KiB
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	56.1 KiB	32.6 KiB
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	56.1 KiB	32.6 KiB
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/457.js	46.0 KiB	20.6 KiB
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/framework.js	63.5 KiB	20.6 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Total CPU Time	Script Evaluation	Script Parse
Unattributable	970 ms	252 ms	0.0 ms
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	767 ms	721 ms	40 ms
g.alicdn.com/tbpc/polyfill/1.0.0/index.umd.es5.production.js	724 ms	540 ms	7.9 ms
www.taobao.com/	647 ms	78 ms	5.9 ms
g.alicdn.com/AWSC/et/1.83.41/et_f.js	533 ms	488 ms	36 ms
g.alicdn.com/AWSC/WebUMID/1.93.0/um.js	471 ms	322 ms	23 ms
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	412 ms	283 ms	55 ms
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/478.js	267 ms	165 ms	50 ms
g.alicdn.com/alilog/mlog/aplus_v2.js	234 ms	165 ms	51 ms
o.alicdn.com/tbhome/tbnav/index.js	193 ms	151 ms	18 ms
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/framework.js	190 ms	57 ms	8.0 ms
g.alicdn.com/AWSC/uab/1.140.0/collina.js	178 ms	162 ms	16 ms
/h5/mtop.tmall.kangaroo.core.service.route.aldlampservice...	91 ms	60 ms	26 ms
/h5/mtop.dsm.compliance.external.privacy.switch.isopen/1....	77 ms	53 ms	0.1 ms
g.alicdn.com/sd/ncpc/nc.js?t=2015052012	75 ms	35 ms	28 ms
o.alicdn.com/tbpc/traceSDK/index.umd.js	69 ms	54 ms	13 ms
g.alicdn.com/main-search/new-search-suggest/2.14.1/bundle.js	67 ms	53 ms	10 ms

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	4.1 s
Other	1.2 s
Style & Layout	627 ms
Script Parsing & Compilation	471 ms
Rendering	118 ms
Garbage Collection	94 ms
Parse HTML & CSS	53 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
The page has an unload handler in the main frame.	Actionable
The page has an unload handler in a sub frame.	Actionable
Pages with WebSocket cannot enter back/forward cache.	Pending browser support

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/imgextra/i4/O1CN01xOFPlo1KANunNUDmO_!!6000000001123-1-tp...	1.2 MiB
/imgextra/i3/O1CN010P8Pzl1CDZjGGI9xl_!!6000000000047-1-tp...	467.4 KiB
g.alicdn.com/code/npm/@ali/pegasus-project-tbhome-2024/1.11.11/js/478.js	383.9 KiB
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	229.0 KiB
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	171.3 KiB
o.alicdn.com/tbpc/traceSDK/index.umd.js	133.2 KiB
o.alicdn.com/tbhome/tbnav/index.js	113.5 KiB
g.alicdn.com/AWSC/et/1.83.41/et_f.js	109.7 KiB
g.alicdn.com/AWSC/et/1.83.41/et_f.js	109.6 KiB
g.alicdn.com/AWSC/uab/1.140.0/collina.js	103.6 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i1/O1CN01OM0NTj1JPfW2zGKsi_!!6000000001021-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i1/O1CN01OM0NTj1JPfW2zGKsi_!!6000000001021-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`	/imgextra/i4/O1CN013fOEoF1PFwnqJPNL2_!!6000000001812-2-tp...
a.business-entry-title-card-top > div.business-entry-title-card-top-title-container > div.business-entry-title-card-top-title-tag > img `a.business-entry-title-card-top > div.business-entry-title-card-top-title-container > div.business-entry-title-card-top-title-tag > img`	/imgextra/i2/O1CN01RgnvHh1UWxV6YWcSB_!!6000000002526-2-tp...
a.business-entry-title-card-top > div.business-entry-title-card-top-title-container > div.business-entry-title-card-top-title-tag > img `a.business-entry-title-card-top > div.business-entry-title-card-top-title-container > div.business-entry-title-card-top-title-tag > img`	/imgextra/i3/O1CN01PDJRyD1GWaWxkjNtj_!!6000000000630-2-tp...
div.tb-toolkit-list > div.toolkit-item-new > div.toolkit-icon > img.im-icon-new `div.tb-toolkit-list > div.toolkit-item-new > div.toolkit-icon > img.im-icon-new`	/imgextra/i1/O1CN010mCfxI1mzVG35w6Zf_!!6000000005025-2-tp...
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`	/imgextra/jz3_1/O1CN01nRidmm1UAVxdcYMzF_!!6000000002477-2...
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`	/imgextra/jz3_1/O1CN01nRidmm1UAVxdcYMzF_!!6000000002477-2...
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`	/imgextra/jz3_1/O1CN01nRidmm1UAVxdcYMzF_!!6000000002477-2...
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`	/imgextra/jz3_1/O1CN01nRidmm1UAVxdcYMzF_!!6000000002477-2...
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`	/imgextra/jz3_1/O1CN01nRidmm1UAVxdcYMzF_!!6000000002477-2...
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`	/imgextra/jz3_1/O1CN01nRidmm1UAVxdcYMzF_!!6000000002477-2...
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`	/imgextra/jz3_1/O1CN01nRidmm1UAVxdcYMzF_!!6000000002477-2...
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`	/imgextra/jz3_1/O1CN01nRidmm1UAVxdcYMzF_!!6000000002477-2...
a.business-entry-title-card-top > div.business-entry-title-card-top-title-container > div.business-entry-title-card-top-title-tag > img `a.business-entry-title-card-top > div.business-entry-title-card-top-title-container > div.business-entry-title-card-top-title-tag > img`	/imgextra/i3/O1CN01MqUQtu1rAjRqET2Uc_!!6000000005591-2-tp...
div.business-entry-title-card-top-title-container > div.business-entry-title-card-top-title-rtl > div.business-entry-title-card-top-title-tag-left > img `div.business-entry-title-card-top-title-container > div.business-entry-title-card-top-title-rtl > div.business-entry-title-card-top-title-tag-left > img`	/imgextra/i4/O1CN01WSiIlS1nPbrTgnLCs_!!6000000005082-2-tp...

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Optimize DOM size

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●User Timing marks and measures 1 user timing

●Avoid long main-thread tasks 20 long tasks found

●Avoid non-composited animations 8 animated elements found

●Network Requests

●Network Round Trip Times 270 ms

●Server Backend Latencies 290 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 10 ms

●Avoid large layout shifts 8 layout shifts found

○INP breakdown

Accessibility

ARIA

Some ARIA roles have required attributes that describe the state of the element to screen readers. Learn more about roles and required attributes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
请输入搜索文字 `div#J_Search > form#J_TSearchForm > div.search-suggest-combobox > input#q`

ARIA roles must have valid values in order to perform their intended accessibility functions. Learn more about valid ARIA roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
欢迎进入淘宝,盲人用户使用操作智能引导，请按快捷键Ctrl+Alt+R；阅读详细操作说明请按快捷键Ctrl+Alt+问号键。 `body.lg > a#ariaTipText`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
亲，请登录 `li#J_SiteNavLogin > div.site-nav-menu-hd > div.site-nav-sign > a.h`
券后7.7折起 `ul.service-bd--LdDnWwA9 > li.J_Cat > div.first-cate-container--odleAL9p > a.cate-content-href--HI8wwRts`
抢省钱补贴 `ul.service-bd--LdDnWwA9 > li.J_Cat > div.first-cate-container--odleAL9p > a.cate-content-href--HI8wwRts`
7198 `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-coin > span`
7999 `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-coin > span`
4399 `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-coin > span`
24298 `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-coin > span`
国家补贴 `a.business-entry-title-card-top > div.business-entry-title-card-top-title-container > div.business-entry-title-card-top-title-rtl > div.business-entry-title-card-top-title`
27999 `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-coin > span`
6999 `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-coin > span`
嘿！更懂你的推荐，更便捷的搜索 `div.user > div.member-ft > div.member-logout > div.login-guide-desc`
立即登录 `div.user > div.member-ft > div.member-logout > a.btn-login`
猜你喜欢 `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > div.smallTabTitle`
天猫 `div.seo > div > p > a`
商品 `div.seo > div > p > a`
newbalance `div.seo > div > p > a`
converse `div.seo > div > p > a`
adidas `div.seo > div > p > a`
nike `div.seo > div > p > a`
oppo `div.seo > div > p > a`
vivo `div.seo > div > p > a`
电脑 `div.seo > div > p > a`
音响 `div.seo > div > p > a`
手机 `div.seo > div > p > a`
商品 `div.seo > div > p > a`
淘宝客户端 `div.seo > div > p > a`
Tao `div.seo > div > p > a`

These are opportunities to improve the legibility of your content.

Names and labels

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG `body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG`
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tbpc-layout > div.tips-carousel > div.tips-content > img.tip-arrow `div.tbpc-layout > div.tips-carousel > div.tips-content > img.tip-arrow`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-toolkit-list > div.toolkit-item-new > div.toolkit-icon > img.im-icon-new `div.tb-toolkit-list > div.toolkit-item-new > div.toolkit-icon > img.im-icon-new`
body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > img `body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > img`
body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > img `body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > img`

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > iframe `body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > iframe`
body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > iframe `body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > iframe`

Link text (and alternate text for images, when used as links) that is discernible, unique, and focusable improves the navigation experience for screen reader users. Learn how to make links accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.lg > div#ice-container > div.J_Module > a.superbanner-inner `body.lg > div#ice-container > div.J_Module > a.superbanner-inner`
淘宝网 `div.tbh-logo > div.logo > h1 > a.logo-bd`
div.user > div.J_UserMemberWrap > div.avatar-wrapper > a.J_UserMemberHome `div.user > div.J_UserMemberWrap > div.avatar-wrapper > a.J_UserMemberHome`
div.slick-slide > div > div > a.user-externalLink-slider-item `div.slick-slide > div > div > a.user-externalLink-slider-item`
div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a `div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a`
div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a `div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a`
div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a `div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a`
div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a `div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a`
div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a `div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a`

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Best practices

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
1 `div.slick-slider > ul.slick-dots > li > button`
2 `div.slick-slider > ul.slick-dots > li > button`
3 `div.slick-slider > ul.slick-dots > li.slick-active > button`
4 `div.slick-slider > ul.slick-dots > li > button`
5 `div.slick-slider > ul.slick-dots > li > button`
注册 `div.user > div.J_UserMemberWrap > div.member-login-btn-container > a.btn-register`
开店 `div.user > div.J_UserMemberWrap > div.member-login-btn-container > a.btn-open`

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
券后7.7折起抢省钱补贴 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`
电脑配件办公文具 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`
工业品商业农业定制 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`
家电手机通信数码 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`
家具家装家居厨具 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`
女装男装内衣配饰 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`
女鞋男鞋运动户外 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`
汽车珠宝文玩箱包 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`
食品鲜花酒水健康 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`
母婴童装玩具宠物 `div.tbh-service > div.J_Service > ul.service-bd--LdDnWwA9 > li.J_Cat`

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

●`[role]`s are contained by their required parent element

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Form elements have associated labels

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

●`[accesskey]` values are unique

●`button`, `link`, and `menuitem` elements have accessible names

●ARIA attributes are used as specified for the element's role

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●Uses ARIA roles only on compatible elements

●Image elements do not have `[alt]` attributes that are redundant text.

●Identical links have the same purpose.

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`	/bao/uploaded/i2/872777610/O1CN01wdbaCp265RC9HtuGQ~hdr~li...	36 x 36 (1.00)	270 x 360 (0.75)

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Unload event listeners are deprecated and will be removed.	g.alicdn.com/AWSC/et/1.83.41/et_f.js line 1, col 263123

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source	Description
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/uab/1.140.0/collina.js line 1, col 28648	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/uab/1.140.0/collina.js line 1, col 28648	`Permissions policy violation: accelerometer is not allowed in this document.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Uncaught TypeError: Failed to construct 'RTCPeerConnection': Please use the 'new' operator, this DOM object constructor cannot be called as a function.`
g.alicdn.com/AWSC/fireyejs/1.234.20/fireyejs.js	`Uncaught TypeError: Failed to construct 'RTCPeerConnection': Please use the 'new' operator, this DOM object constructor cannot be called as a function.`

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Map URL
/h5/mtop.tmall.kangaroo.core.service.route.aldlampservice...
/h5/mtop.tmall.kangaroo.core.service.route.aldlampservice...
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	sourcemap.def.alibaba-inc.com/sourcemap/vip/havana-nlogin/0.10.35/index.js.map
x.alicdn.com/vip/havana-nlogin/0.10.35/index.js	sourcemap.def.alibaba-inc.com/sourcemap/vip/havana-nlogin/0.10.35/index.js.map
g.alicdn.com/main-search/new-search-suggest/2.14.1/bundle.js	g.alicdn.com/main-search/new-search-suggest/2.14.1/bundle.js.map

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

○Redirects HTTP traffic to HTTPS

SEO

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
网页无障碍 `ul#J_SiteNavBdL > li#J_SiteNavMobile > div.site-nav-menu-hd > a#cniil_wza`
回顶部 `div#tb-toolkit-new > div.tb-toolkit-list > div.toolkit-item-new > a.back-btn`

To appear in search results, crawlers need access to your app.

Content Best Practices

Informative elements should aim for short, descriptive alternate text. Decorative elements can be ignored with an empty alt attribute. Learn more about the `alt` attribute.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG `body.lg > div#ice-container > div.J_Module > img.superbanner-background-image--GhTuMTaG`
div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo `div > a.home-ad-banner-item > div.home-ad-banner-item-content-container > img.home-ad-banner-item-logo`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img `div.business-entry-item-card-content-container > a.business-entry-item-card-content > div.business-entry-item-card-content-container-image > img`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image `div.tips-carousel > div.tips-content > div.carousel-images > img.carousel-image`
div.tbpc-layout > div.tips-carousel > div.tips-content > img.tip-arrow `div.tbpc-layout > div.tips-carousel > div.tips-content > img.tip-arrow`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon `div.smallTabListScrollContainer > div.smallTabList > div.smallTabWrapper > img.smallTabIcon`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img `div.info-wrapper > div.info-wrapper-title > div.info-wrapper-title-img > img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img `div.tb-pick-content-item > a.item-link > div.img-wrapper > img.product-img`
div.tb-toolkit-list > div.toolkit-item-new > div.toolkit-icon > img.im-icon-new `div.tb-toolkit-list > div.toolkit-item-new > div.toolkit-icon > img.im-icon-new`
body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > img `body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > img`
body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > img `body.lg > div.J_MIDDLEWARE_FRAME_WIDGET > img`

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●robots.txt is valid

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`

Results for https://taobao.com

Site Health

How you compare

Top Priorities (5)

Fix Priority Matrix

Quick Wins

Strategic

Easy Improvements

Deprioritize

What fixing these means

Conversion Barriers

Speed (2)

Trust (2)

Usability (1)

Content (3)

Navigation (3)

Return on Investment

Investment

Monthly returns

Regulatory risk avoided

Payback period

Estimated Remediation Cost

Cost by category

Cost by effort level

What Inaction Is Costing You

Compliance Risk

Bandwidth Waste

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

Names and labels

Internationalization and localization

Best practices

Best Practices

Trust and Safety

General

SEO

Crawling and Indexing

Content Best Practices

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

ARIA

Contrast

Names and labels

Best practices

Best Practices

User Experience

General

SEO

Crawling and Indexing

Content Best Practices

Keyboard Shortcuts