Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

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

Performance issues directly impact user engagement and conversion rates.

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 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:47.141 source:map[column:262883 line:1 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.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:24.057 source:map[column:1.676889e+06 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:0.949 source:map[column:1.831007e+06 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:0.512 source:map[column:1.418613e+06 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:0.29 source:map[column:1.420107e+06 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:0.379 source:map[column:1.420661e+06 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:0.195 source:map[column:952101 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:19.03 source:map[column:1.373842e+06 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:0.565 source:map[column:1.419783e+06 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:1.629 source:map[column:1.997658e+06 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:1.924 source:map[column:623148 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js urlProvider:network]] map[reflowTime:1.71 source:map[column:1.56487e+06 line:0 type:source-location url:https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js urlProvider:network]] map[reflowTime:1.237 source:map[type:text value:[unattributed]]] map[reflowTime:0.772 source:map[column:2442 line:103 type:source-location url:https://www.temu.com/bgn_verification.html?verifyCode=ZMBxwy4TvpQx0u_WyfXJuga934d0802a5d84263&from=https%3A%2F%2Fwww.temu.com%2F&refer_page_name=home&refer_page_id=10005_1776360451529_qezd85yv75&refer_page_sn=10005&_x_sessn_id=stpo616aw1 urlProvider:network]]]

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
static.kwcdn.com/m-assets/assets/css/vfd-b8752a1350d282ae0f31.css	5.7 KiB
static.kwcdn.com/m-assets/assets/css/535-bc4504ea10f94b44d6e4.css	4.3 KiB
static.kwcdn.com/m-assets/assets/css/biz_vendors-cf0d74c70aba42b90b15.css	9.9 KiB
static.kwcdn.com/m-assets/assets/css/bgn_verification-0b06988c12f4bf1bf905.css	346 B

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: 1.9 s

URL	Time Spent
temu.com/	283 ms
www.temu.com/	1.7 s
/bgn_verification.html?verifyCode=ZMBxwy4TvpQx0u_WyfXJuga...	0.0 ms

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.

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

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

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 240 ms 276.8 KiB

URL	Transfer Size	Est Savings
static.kwcdn.com/m-assets/assets/js/biz_vendors_bc3b1c59ccd3ace37f24.js	167.4 KiB	96.0 KiB
static.kwcdn.com/m-assets/assets/js/vendors_6cae34817f3936c619c1.js	190.1 KiB	86.2 KiB
static.kwcdn.com/m-assets/assets/js/535_ad9cc3555796072e56ff.js	67.0 KiB	45.3 KiB
static.kwcdn.com/m-assets/assets/js/2419_aefaeec3b29e5bab6831.js	157.9 KiB	26.9 KiB
static.kwcdn.com/m-assets/assets/js/vfd_3e4780b9cfbe6342b7d4.js	28.7 KiB	22.3 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
static.kwcdn.com/m-assets/assets/js/2419_aefaeec3b29e5bab6831.js	1.1 s	1.1 s	9.8 ms
static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js	560 ms	398 ms	40 ms
Unattributable	510 ms	10 ms	0.0 ms
static.kwcdn.com/m-assets/assets/js/vendors_6cae34817f3936c619c1.js	381 ms	335 ms	17 ms
static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js	334 ms	268 ms	62 ms
/bgn_verification.html?verifyCode=ZMBxwy4TvpQx0u_WyfXJuga...	314 ms	53 ms	12 ms
www.temu.com/	90 ms	37 ms	17 ms
static.kwcdn.com/m-assets/assets/modernjs/0080_4ba7fa8f5eb683bd3d67.js	88 ms	76 ms	10 ms
static.kwcdn.com/m-assets/assets/modernjs/5534_9697186ca2accf571447.js	65 ms	60 ms	2.4 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	2.3 s
Other	636 ms
Script Parsing & Compilation	218 ms
Style & Layout	210 ms
Garbage Collection	92 ms
Parse HTML & CSS	48 ms
Rendering	22 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
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.	Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.	Not actionable

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#Slider > div.slider-wrapper-2tige > div#k6rpilmudq2p > img.slider-img-bg-1konc `div#Slider > div.slider-wrapper-2tige > div#k6rpilmudq2p > img.slider-img-bg-1konc`

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

●Use efficient cache lifetimes

●Layout shift culprits

●Document request latency

●Optimize DOM size

●Font display

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Network dependency tree

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●Reduce unused CSS

●Avoids enormous network payloads Total size was 2,270 KiB

●Avoid long main-thread tasks 8 long tasks found

●Network Requests

●Network Round Trip Times 70 ms

●Server Backend Latencies 80 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 90 ms

○INP breakdown

○LCP request discovery

○User Timing marks and measures

○Avoid non-composited animations

○Avoid large layout shifts

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.

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
Slide to complete the puzzle `div#Slider > div.slider-wrapper-2tige > div.handlebar-xHMxu > div.slide-btn-bg-1uMcM`

These are opportunities to improve the legibility of your content.

○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>`

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

●`[role]` values are valid

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

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

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

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

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

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

●`[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

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

●Touch targets have sufficient size and spacing.

●Document has a main landmark.

●Deprecated ARIA roles were not used

○`[accesskey]` values are unique

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○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

○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

○Buttons have an accessible name

○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

○`<frame>` or `<iframe>` elements have a title

○Heading elements appear in a sequentially-descending order

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

○Image elements have `[alt]` attributes

○Input buttons have discernible text.

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

○Form elements have associated labels

○Links are distinguishable without relying on color.

○Links have a discernible name

○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.

○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

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

○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

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
SharedStorage	static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js
SharedStorage	static.kwcdn.com/m-assets/assets/js/biz_vendors_bc3b1c59ccd3ace37f24.js

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
/bgn_verification.html?verifyCode=ZMBxwy4TvpQx0u_WyfXJuga...	`AbortError: Transition was skipped`
static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js	`Error: Request failed with status code 403 at t.exports (https://static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js:1:12982) at t.exports (https://static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js:1:15424) at XMLHttpRequest.x (https://static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js:1:7587)`
static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js	`Error: Request failed with status code 424 at t.exports (https://static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js:1:12982) at t.exports (https://static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js:1:15424) at XMLHttpRequest.x (https://static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js:1:7587)`
static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js	Error: unknown biz error at response (https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:800567) at async https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:1355577 at async Promise.all (index 0) at async https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:1347289 at async https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:1355577 at async Promise.all (index 2) at async C (https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:1347152) at async fo.queryWebLayoutData (https://static.kwcdn.com/m-assets/assets/modernjs/5534_9697186ca2accf571447.js:1:20923) at async I (https://static.kwcdn.com/m-assets/assets/modernjs/5534_9697186ca2accf571447.js:1:18499) at async Promise.all (index 1)
static.kwcdn.com/m-assets/assets/modernjs/vendors_8910cd6fc1ee4fb3.js	Error: unknown biz error at response (https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:800567) at async https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:1355577 at async Promise.all (index 1) at async https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:1347289 at async https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:1355577 at async Promise.all (index 2) at async C (https://static.kwcdn.com/m-assets/assets/modernjs/biz_vendors_6d07ed48bbf51c19.js:1:1347152) at async fo.queryWebLayoutData (https://static.kwcdn.com/m-assets/assets/modernjs/5534_9697186ca2accf571447.js:1:20923) at async I (https://static.kwcdn.com/m-assets/assets/modernjs/5534_9697186ca2accf571447.js:1:18499) at async Promise.all (index 1)
www.temu.com/api/seo/get_common_biz_data	`Failed to load resource: the server responded with a status of 403 ()`
www.temu.com/api/passport/token/touch	`Failed to load resource: the server responded with a status of 424 ()`

●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

●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

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

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
`x-robots-tag: noindex`

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

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Document has a valid `hreflang`

○Image elements have `[alt]` attributes

○Document has a valid `rel=canonical`