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Lighthouse Mobile

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

Audit breakdown by category with detailed findings.

47

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.

RequestCache TTLTransfer Size
m.xunlei.com/img/xunlei-background.7529e43a.png0.0 ms581.9 KiB
m.xunlei.com/js/chunk-common.18ae7111.js0.0 ms577.5 KiB
m.xunlei.com/main/b4.png0.0 ms339.6 KiB
m.xunlei.com/main/m-banner.png0.0 ms324.5 KiB
m.xunlei.com/js/vendor.7fe0b994.js0.0 ms167.2 KiB
m.xunlei.com/main/b1.png0.0 ms149.7 KiB
m.xunlei.com/fonts/flUhRq6tzZclQEJ-Vdg-IuiaDsNcIhQ8tQ.d0831fe6.woff20.0 ms125.3 KiB
m.xunlei.com/icons/xunleiyingyin-new.png0.0 ms43.3 KiB
m.xunlei.com/icons/xunleiyouxi.png0.0 ms39.5 KiB
m.xunlei.com/css/vendor.6a81cf17.css0.0 ms38.1 KiB
m.xunlei.com/img/m-link2.dde6f88a.png0.0 ms32.6 KiB
m.xunlei.com/icons/xl-speed.png0.0 ms29.4 KiB
m.xunlei.com/icons/gongwanganbei.svg0.0 ms24.8 KiB
m.xunlei.com/icons/jingyingxingwangzhan.svg0.0 ms24.8 KiB
m.xunlei.com/img/m-link1.170cf89f.png0.0 ms24.4 KiB
m.xunlei.com/icons/xinbaianxinxi.svg0.0 ms19.6 KiB
m.xunlei.com/js/2.0fc209f6.js0.0 ms17.8 KiB
m.xunlei.com/footer/qrcode.png0.0 ms15.5 KiB
m.xunlei.com/css/chunk-common.35738933.css0.0 ms5.6 KiB
m.xunlei.com/icons/xl-browser-new.png0.0 ms4.6 KiB
m.xunlei.com/js/app.8471c94b.js0.0 ms4.0 KiB
m.xunlei.com/icons/logo.svg0.0 ms3.2 KiB
m.xunlei.com/fetch.js0.0 ms3.0 KiB
m.xunlei.com/icons/xunleihuiyuan.svg0.0 ms2.6 KiB
m.xunlei.com/css/2.8e809375.css0.0 ms2.4 KiB
m.xunlei.com/icons/weibo.svg0.0 ms1.7 KiB
m.xunlei.com/css/app.5bdbb1d9.css0.0 ms1.5 KiB
m.xunlei.com/icons/weixin.svg0.0 ms1.3 KiB
m.xunlei.com/icons/menu.svg0.0 ms887 B
m.xunlei.com/icons/m-right.svg0.0 ms845 B
m.xunlei.com/icons/x-future-right.svg0.0 ms817 B
m.xunlei.com/icons/x-b-product-right.svg0.0 ms804 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.

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.

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.

URLResource SizeEst Savings
手机迅雷 4亿用户下载选择 下载 Android 迅雷 Windows 版 Mac 版 TV 版 Nas 版 section#customer > div.x-c-product-control > div > div.background
m.xunlei.com/img/xunlei-background.7529e43a.png581.3 KiB386.0 KiB
div.row > div.col-4 > span.q-icon > img div.row > div.col-4 > span.q-icon > img
m.xunlei.com/main/b4.png339.0 KiB333.5 KiB
赋能共识,共建信任 section.child > div.x-banner-control > div.text-center > img
m.xunlei.com/main/m-banner.png323.9 KiB290.8 KiB
div.row > div.col-4 > span.q-icon > img div.row > div.col-4 > span.q-icon > img
m.xunlei.com/main/b1.png149.1 KiB143.7 KiB
div.row > div > span.q-icon > img div.row > div > span.q-icon > img
m.xunlei.com/icons/xunleiyingyin-new.png42.7 KiB41.5 KiB
div.row > div > span.q-icon > img div.row > div > span.q-icon > img
m.xunlei.com/icons/xunleiyouxi.png38.9 KiB37.8 KiB
div.row > div > span.q-icon > img div.row > div > span.q-icon > img
m.xunlei.com/icons/xl-speed.png28.9 KiB27.6 KiB
构筑可信数字基石 a > div.x-future-control > div.relative-position > img.p2
m.xunlei.com/img/m-link2.dde6f88a.png32.0 KiB24.6 KiB
面向未来 a > div.x-future-control > div.relative-position > img.p1
m.xunlei.com/img/m-link1.170cf89f.png23.9 KiB17.8 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:2360.431 label:Time to first byte subpart:timeToFirstByte] map[duration:206.742 label:Resource load delay subpart:resourceLoadDelay] map[duration:44.24 label:Resource load duration subpart:resourceLoadDuration] map[duration:270.145 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-DIV
nodeLabel: 手机迅雷 4亿用户下载选择 下载 Android 迅雷 Windows 版 Mac 版 TV 版 Nas 版
path: 1,HTML,1,BODY,0,DIV,1,DIV,4,DIV,0,MAIN,0,DIV,2,SECTION,0,DIV,2,DIV,0,DIV
selector: section#customer > div.x-c-product-control > div > div.background
snippet: <div data-v-101dbb51="" class="background text-center relative-position">

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-DIV
nodeLabel: 手机迅雷 4亿用户下载选择 下载 Android 迅雷 Windows 版 Mac 版 TV 版 Nas 版
path: 1,HTML,1,BODY,0,DIV,1,DIV,4,DIV,0,MAIN,0,DIV,2,SECTION,0,DIV,2,DIV,0,DIV
selector: section#customer > div.x-c-product-control > div > div.background
snippet: <div data-v-101dbb51="" class="background text-center relative-position">

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.

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.

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: 2.8 s
URLTime Spent
xunlei.com/1.2 s
www.xunlei.com/1.6 s
m.xunlei.com/m/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

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: 300 ms 36.2 KiB
URLTransfer SizeEst Savings
m.xunlei.com/css/vendor.6a81cf17.css37.6 KiB36.2 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

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.8 s 516.5 KiB
URLTransfer SizeEst Savings
m.xunlei.com/js/chunk-common.18ae7111.js446.1 KiB418.0 KiB
m.xunlei.com/js/vendor.7fe0b994.js166.6 KiB98.5 KiB

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.

CategoryTime Spent
Other789 ms
Script Evaluation615 ms
Style & Layout463 ms
Script Parsing & Compilation245 ms
Rendering90 ms
Parse HTML & CSS46 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 reasonFailure type
The page has an unload handler in the main frame.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
赋能共识,共建信任 section.child > div.x-banner-control > div.text-center > img
m.xunlei.com/main/m-banner.png

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

Layout shift culprits
Optimize DOM size
Forced reflow
Optimize viewport for mobile
Minify CSS
Minify JavaScript
Avoids enormous network payloads Total size was 2,638 KiB
JavaScript execution time 0.8 s
Avoid long main-thread tasks 6 long tasks found
Network Requests
Network Round Trip Times 280 ms
Server Backend Latencies 60 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 0 ms
INP breakdown
User Timing marks and measures
Avoid non-composited animations
Avoid large layout shifts
65

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

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.bg-white > header.q-header > div.q-toolbar > button.q-btn div.bg-white > header.q-header > div.q-toolbar > button.q-btn

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
span.q-btn__wrapper > span.q-btn__content > div.text-body1 > img.img-icon span.q-btn__wrapper > span.q-btn__content > div.text-body1 > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon

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
div.x-c-product-control > div > div.background > a div.x-c-product-control > div > div.background > a
div > div.row > div > a div > div.row > div > 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.

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
下载 Android 迅雷 button.q-btn > span.q-btn__wrapper > span.q-btn__content > div.text-body1
Windows 版 div.icons > div.icons-item > a > div
Mac 版 div.icons > div.icons-item > a > div
TV 版 div.icons > div.icons-item > a > div
Nas 版 div.icons > div.icons-item > a > div
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
立即前往 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption
收起迅雷产品 div > div.fold-control > div.row > div.name
立即下载 button.q-btn > span.q-btn__wrapper > span.q-btn__content > span.text-caption

These are opportunities to improve the legibility of your content.

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

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

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>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-hidden="true"]` elements do not contain focusable descendents
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.
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
Identical links have the same purpose.
`[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
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 use only permitted 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
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
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.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
Form elements have associated labels
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.
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.
81

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 / WarningSource
Unload event listeners are deprecated and will be removed.

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.

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 browser errors logged to the console
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
92

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

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
span.q-btn__wrapper > span.q-btn__content > div.text-body1 > img.img-icon span.q-btn__wrapper > span.q-btn__content > div.text-body1 > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon
div.icons > div.icons-item > a > img.img-icon div.icons > div.icons-item > a > img.img-icon

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
Links are crawlable
robots.txt is valid
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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