Lighthouse Mobile

· 0 checks — Mobile 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 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
/api/public/video-showcase/media/ppt-portrait-kids-grit-0...	300.0 s	353.1 KiB
ai.zhailaoban.com/api/public/video-showcase/media/ppt-portrait-you-can-001/thumb	300.0 s	259.8 KiB
/api/public/video-showcase/media/ppt-landscape-liberal-ar...	300.0 s	240.1 KiB
/api/public/video-showcase/media/ppt-landscape-ai-express...	300.0 s	226.6 KiB

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]

items: [map[node:map[type:text value:Total] score:0.46645204915188926] map[node:map[boundingRect:map[bottom:28866 height:28291 left:0 right:412 top:575 width:412] lhId:page-5-SECTION nodeLabel:▶ PPT竖屏 9:16 孩子成事靠 2 种气质 PPT竖屏 · 自定义背景 PPT竖屏 PPT竖屏自定义背景自定义背景家庭教育观看 ▶ PPT竖… path:1,HTML,1,BODY,6,MAIN,2,SECTION selector:body > main > section.content snippet:<section class="content"> type:node] score:0.456865127582017] map[node:map[boundingRect:map[bottom:28866 height:28291 left:0 right:412 top:575 width:412] lhId:page-5-SECTION nodeLabel:▶ PPT竖屏 9:16 孩子成事靠 2 种气质 PPT竖屏 · 自定义背景 PPT竖屏 PPT竖屏自定义背景自定义背景家庭教育观看 ▶ PPT竖… path:1,HTML,1,BODY,6,MAIN,2,SECTION selector:body > main > section.content snippet:<section class="content"> type:node] score:0.009586921569872248]]

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.

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
孩子成事靠 2 种气质 `div#sample-grid > article.sample-card > div.sample-media > img`	/api/public/video-showcase/media/ppt-portrait-kids-grit-0...	352.8 KiB	226.2 KiB
这条视频你也能做 `div#sample-grid > article.sample-card > div.sample-media > img`	ai.zhailaoban.com/api/public/video-showcase/media/ppt-portrait-you-can-001/thumb	259.4 KiB	162.1 KiB
文科生的春天来了 `div#sample-grid > article.sample-card > div.sample-media > img`	/api/public/video-showcase/media/ppt-landscape-liberal-ar...	239.8 KiB	149.8 KiB
AI 时代，不会表达的人 `div#sample-grid > article.sample-card > div.sample-media > img`	/api/public/video-showcase/media/ppt-landscape-ai-express...	226.2 KiB	141.3 KiB
logo `nav.nav > div.nav-inner > a.nav-logo > img`	ai.zhailaoban.com/static/logo-128.png	21.3 KiB	20.8 KiB

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:2948.863 label:Time to first byte subpart:timeToFirstByte] map[duration:1477.01 label:Resource load delay subpart:resourceLoadDelay] map[duration:3054.115 label:Resource load duration subpart:resourceLoadDuration] map[duration:30.79 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-IMG

nodeLabel: 孩子成事靠 2 种气质

path: 1,HTML,1,BODY,6,MAIN,2,SECTION,1,DIV,0,ARTICLE,0,DIV,0,IMG

selector: div#sample-grid > article.sample-card > div.sample-media > img

snippet: <img src="/api/public/video-showcase/media/ppt-portrait-kids-grit-001/thumb" alt="孩子成事靠 2 种气质" loading="lazy">

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: 孩子成事靠 2 种气质

path: 1,HTML,1,BODY,6,MAIN,2,SECTION,1,DIV,0,ARTICLE,0,DIV,0,IMG

selector: div#sample-grid > article.sample-card > div.sample-media > img

snippet: <img src="/api/public/video-showcase/media/ppt-portrait-kids-grit-001/thumb" alt="孩子成事靠 2 种气质" loading="lazy">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
ai.zhailaoban.com/showcase	http/1.1
ai.zhailaoban.com/static/social_proof.css?v=1	http/1.1
ai.zhailaoban.com/static/social_proof.js?v=1	http/1.1
ai.zhailaoban.com/static/logo-128.png	http/1.1
ai.zhailaoban.com/static/beian.png	http/1.1
ai.zhailaoban.com/static/ai_support.css?v=20260927support4	http/1.1
ai.zhailaoban.com/static/ai_support.js?v=20260927support4	http/1.1
ai.zhailaoban.com/api/public/video-showcase	http/1.1
ai.zhailaoban.com/api/public/activity	http/1.1
/api/public/video-showcase/media/ppt-portrait-kids-grit-0...	http/1.1
ai.zhailaoban.com/api/public/video-showcase/media/ppt-portrait-you-can-001/thumb	http/1.1
/api/public/video-showcase/media/ppt-landscape-liberal-ar...	http/1.1
/api/public/video-showcase/media/ppt-landscape-ai-express...	http/1.1
ai.zhailaoban.com/favicon.ico	http/1.1

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

value: No additional origins are good candidates for preconnecting

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
ai.zhailaoban.com/static/social_proof.css?v=1	1.8 KiB	528 ms

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

Keep the server response time for the main document short because all other requests depend on it. Learn more about the Time to First Byte metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.3 s

URL	Time Spent
ai.zhailaoban.com/showcase	2.4 s

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

Element	Layout shift score
▶ PPT竖屏 9:16 孩子成事靠 2 种气质 PPT竖屏 · 自定义背景 PPT竖屏 PPT竖屏自定义背景自定义背景家庭教育观看 ▶ PPT竖… `body > main > section.content`	0.457
▶ PPT竖屏 9:16 孩子成事靠 2 种气质 PPT竖屏 · 自定义背景 PPT竖屏 PPT竖屏自定义背景自定义背景家庭教育观看 ▶ PPT竖… `body > main > section.content`	0.010

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: 0.0 ms 3.2 KiB

URL	Transfer Size	Est Savings
ai.zhailaoban.com/static/ai_support.js?v=20260927support4	18.3 KiB	3.2 KiB

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

●Optimize DOM size

●Font display

●Forced reflow

●Optimize viewport for mobile

●Max Potential First Input Delay 20 ms

●Minify CSS

●Reduce unused CSS

●Reduce unused JavaScript

●Avoids enormous network payloads Total size was 1,162 KiB

●JavaScript execution time 0.1 s

●Minimizes main-thread work 0.8 s

●Avoid long main-thread tasks 2 long tasks found

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

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 170 ms

●Server Backend Latencies 210 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

○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.

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
🎞️ 样片 `body > div.nav-mobile-grid > a.active`
VIDEO SHOWCASE `body > main > section.page-head > div.eyebrow`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
用同款生成 `article.sample-card > div.sample-info > div.card-actions > a.card-btn`
© 2026 宅老板·秒出片 · 鲁ICP备2025143445号-2 · 鲁公网安备37010202700598号 `body > footer.site-footer-unified > div`
鲁ICP备2025143445号-2 `body > footer.site-footer-unified > div > a`
鲁公网安备37010202700598号 `body > footer.site-footer-unified > div > a`

These are opportunities to improve the legibility of your content.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
孩子成事靠 2 种气质 `div#sample-grid > article.sample-card > div.sample-info > h3.sample-title`

These are opportunities to improve keyboard navigation in your application.

○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>`

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

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

●Buttons have an accessible name

●Image elements have `[alt]` attributes

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

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

●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 have a discernible name

●Touch targets have sufficient size and spacing.

●Document has a main landmark.

●Identical links have the same purpose.

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

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

○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

○`[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

○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

○`<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

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

○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

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
ai.zhailaoban.com/favicon.ico	`Failed to load resource: the server responded with a status of 404 (Not Found)`

●Uses HTTPS

●Avoids deprecated APIs

●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.

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

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`