Skip to content
https://west.cn

Lighthouse Mobile

· 0 checks — Mobile Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.
SCORE
0
GRADE
FIX
0
REVIEW
0
PASS
0
INFO
0

Detailed Report

Audit breakdown by category with detailed findings.

56

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.west.cn/m/js2016/lib/core.min.js?t=4202603020.0 ms48.0 KiB
m.west.cn/m/css2016/common.css?t=202603020.0 ms23.9 KiB
m.west.cn/js2016/lib/jsencrypt.min.js0.0 ms18.8 KiB
m.west.cn/m/images2016/logo_2x.png0.0 ms18.6 KiB
m.west.cn/m/images2016/home/nav_icon09_2x.jpg0.0 ms14.8 KiB
m.west.cn/m/js2016/global.js?t=20202603020.0 ms14.5 KiB
m.west.cn/m/css2016/global.css?t=202603020.0 ms12.6 KiB
m.west.cn/m/images2016/home/nav_icon02_2x.jpg0.0 ms8.0 KiB
m.west.cn/m/images2016/home/nav_icon05_2x.jpg0.0 ms6.5 KiB
m.west.cn/m/images2016/home/cloudhost_sw_2x.jpg0.0 ms6.2 KiB
m.west.cn/m/images2016/home/nav_icon01_2x.jpg0.0 ms6.1 KiB
m.west.cn/m/images2016/home/cloudhost_bz_2x.jpg0.0 ms6.1 KiB
m.west.cn/m/images2016/home/cloudhost_rm_2x.jpg0.0 ms5.8 KiB
m.west.cn/m/images2016/home/nav_icon07_2x.jpg0.0 ms5.7 KiB
m.west.cn/m/images2016/home/nav_icon03_2x.jpg0.0 ms5.6 KiB
m.west.cn/m/images2016/home/nav_icon11_2x.png0.0 ms5.2 KiB
m.west.cn/m/images2016/home/nav_icon08_2x.jpg0.0 ms5.1 KiB
m.west.cn/tongji/westtj.js?v1.0.0.10.0 ms4.5 KiB
m.west.cn/m/images2016/icon_hot_2x.png0.0 ms4.1 KiB
m.west.cn/m/images2016/icon_radio_active_2x.png0.0 ms3.5 KiB
m.west.cn/m/js2016/lib/slide/TouchSlide.1.1.js0.0 ms3.5 KiB
m.west.cn/m/js2016/home.js?t=20170425010.0 ms3.0 KiB
m.west.cn/m/images2016/home/icon_else_btn03_2x.png0.0 ms2.9 KiB
m.west.cn/m/images2016/icon_radio_2x.png0.0 ms2.8 KiB
m.west.cn/m/images2016/icon_user_2x.png0.0 ms2.7 KiB
m.west.cn/m/images2016/whois/icon_large_2x.png0.0 ms2.3 KiB
m.west.cn/m/images2016/aboutUs.png0.0 ms2.2 KiB
m.west.cn/m/images2016/home/icon_else_btn04_2x.png0.0 ms2.2 KiB
m.west.cn/m/images2016/home/icon_else_btn01_2x.png0.0 ms2.2 KiB
m.west.cn/m/css2016/home.css?123?t=202603020.0 ms2.1 KiB
m.west.cn/m/images2016/icon_checkbox1_active_2x.png0.0 ms2.0 KiB
m.west.cn/jscripts/ads_tongji.js?10.0 ms1.9 KiB
m.west.cn/m/images2016/home/icon_else_btn02_2x.png0.0 ms1.8 KiB
m.west.cn/m/images2016/icon_menu_2x.png0.0 ms1.6 KiB
m.west.cn/m/images2016/back_top@2x.png0.0 ms1.2 KiB
zz.bdstatic.com/linksubmit/push.js86400.0 s560 B
sp0.baidu.com/9_Q4simg2RQJ8t7jm9iCKT-xh_/s.gif?l=https://m.west.cn/?mobile0.0 ms116 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.

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
云服务器 div.tempWrap > ul > a > img
www.west.cn/m/images2016/banner/home/1000-500.jpg?12381.2 KiB52.1 KiB
西部数码 div#globalWrapper > header.header-nav > a.logo > img
m.west.cn/m/images2016/logo_2x.png18.9 KiB16.3 KiB
企业邮局 ul.nav_icon_box > li > a.nav_icon_txt > img
m.west.cn/m/images2016/home/nav_icon09_2x.jpg15.1 KiB13.5 KiB
虚拟主机 ul.nav_icon_box > li > a.nav_icon_txt > img
m.west.cn/m/images2016/home/nav_icon02_2x.jpg8.1 KiB6.7 KiB
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img
m.west.cn/m/images2016/home/cloudhost_sw_2x.jpg6.8 KiB5.3 KiB
一口价 ul.nav_icon_box > li > a.nav_icon_txt > img
m.west.cn/m/images2016/home/nav_icon05_2x.jpg6.7 KiB5.3 KiB
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img
m.west.cn/m/images2016/home/cloudhost_bz_2x.jpg6.2 KiB5.2 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:3118.1259990234375 label:Time to first byte subpart:timeToFirstByte] map[duration:2158.2000009765625 label:Resource load delay subpart:resourceLoadDelay] map[duration:835.253 label:Resource load duration subpart:resourceLoadDuration] map[duration:7.235 label:Element render delay subpart:elementRenderDelay]]
lhId: page-7-IMG
nodeLabel: 云服务器
path: 1,HTML,1,BODY,0,DIV,9,DIV,1,DIV,0,DIV,0,DIV,0,UL,1,A,0,IMG
selector: div.tempWrap > ul > a > img
snippet: <img alt="云服务器" src="https://www.west.cn/m/images2016/banner/home/1000-500.jpg?123">

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-7-IMG
nodeLabel: 云服务器
path: 1,HTML,1,BODY,0,DIV,9,DIV,1,DIV,0,DIV,0,DIV,0,UL,1,A,0,IMG
selector: div.tempWrap > ul > a > img
snippet: <img alt="云服务器" src="https://www.west.cn/m/images2016/banner/home/1000-500.jpg?123">

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.

URLProtocol
m.west.cn/?mobilehttp/1.1
m.west.cn/m/css2016/global.css?t=20260302http/1.1
m.west.cn/m/css2016/common.css?t=20260302http/1.1
m.west.cn/m/css2016/home.css?123?t=20260302http/1.1
m.west.cn/m/images2016/logo_2x.pnghttp/1.1
m.west.cn/m/images2016/home/nav_icon01_2x.jpghttp/1.1
m.west.cn/m/images2016/home/nav_icon02_2x.jpghttp/1.1
m.west.cn/m/images2016/home/nav_icon03_2x.jpghttp/1.1
m.west.cn/m/images2016/home/nav_icon09_2x.jpghttp/1.1
m.west.cn/m/images2016/home/nav_icon11_2x.pnghttp/1.1
m.west.cn/m/images2016/home/nav_icon05_2x.jpghttp/1.1
m.west.cn/m/images2016/home/nav_icon07_2x.jpghttp/1.1
m.west.cn/m/images2016/home/nav_icon08_2x.jpghttp/1.1
m.west.cn/m/images2016/home/cloudhost_rm_2x.jpghttp/1.1
m.west.cn/m/images2016/home/cloudhost_bz_2x.jpghttp/1.1
m.west.cn/m/images2016/home/cloudhost_sw_2x.jpghttp/1.1
m.west.cn/m/js2016/lib/core.min.js?t=420260302http/1.1
m.west.cn/m/js2016/global.js?t=2020260302http/1.1
m.west.cn/js2016/lib/jsencrypt.min.jshttp/1.1
m.west.cn/m/js2016/lib/slide/TouchSlide.1.1.jshttp/1.1
m.west.cn/m/js2016/home.js?t=2017042501http/1.1
m.west.cn/jscripts/ads_tongji.js?1http/1.1
m.west.cn/tongji/westtj.js?v1.0.0.1http/1.1
m.west.cn/m/images2016/icon_menu_2x.pnghttp/1.1
m.west.cn/m/images2016/icon_user_2x.pnghttp/1.1
m.west.cn/m/images2016/whois/icon_large_2x.pnghttp/1.1
m.west.cn/m/images2016/icon_radio_2x.pnghttp/1.1
m.west.cn/m/images2016/icon_radio_active_2x.pnghttp/1.1
m.west.cn/m/images2016/icon_checkbox1_active_2x.pnghttp/1.1
m.west.cn/m/images2016/home/icon_else_btn01_2x.pnghttp/1.1
m.west.cn/m/images2016/home/icon_else_btn02_2x.pnghttp/1.1
m.west.cn/m/images2016/home/icon_else_btn03_2x.pnghttp/1.1
m.west.cn/m/images2016/home/icon_else_btn04_2x.pnghttp/1.1
m.west.cn/m/images2016/icon_hot_2x.pnghttp/1.1
m.west.cn/m/images2016/back_top@2x.pnghttp/1.1
m.west.cn/m/images2016/aboutUs.pnghttp/1.1
m.west.cn/m/images2016/icon_PC_2x.pnghttp/1.1
m.west.cn/m/images2016/icon_chat_2x.pnghttp/1.1
m.west.cn/tongji/getwestguid.asphttp/1.1
m.west.cn/jscripts/baidutj/hm.jshttp/1.1
m.west.cn/tongji/getwestguid.asp?act=1http/1.1
/tongji/img.asp?a=19db713d238534-0c2b6861b5f6558-64715047...http/1.1
m.west.cn/favicon.icohttp/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

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.

URLTransfer SizeDuration
m.west.cn/m/css2016/common.css?t=2026030223.9 KiB1.5 s
m.west.cn/m/css2016/home.css?123?t=202603022.1 KiB1.1 s
m.west.cn/m/css2016/global.css?t=2026030212.6 KiB449 ms

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: 3.2 s
URLTime Spent
west.cn/1.4 s
www.west.cn/1.5 s
m.west.cn/?mobile330 ms
m.west.cn/?mobile0.0 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: 180 ms 21.6 KiB
URLTransfer SizeEst Savings
m.west.cn/m/css2016/common.css?t=2026030223.5 KiB21.6 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: 530 ms 95.6 KiB
URLTransfer SizeEst Savings
www.googletagmanager.com/gtag/js?id=AW-1045757556166.0 KiB63.6 KiB
m.west.cn/m/js2016/lib/core.min.js?t=42026030247.6 KiB32.0 KiB

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

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 11.2 KiB
URLTransfer SizeEst Savings
m.west.cn/m/js2016/global.js?t=202026030214.1 KiB7.0 KiB
m.west.cn/js2016/lib/jsencrypt.min.js18.4 KiB4.1 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
云服务器 div.tempWrap > ul > a > img
www.west.cn/m/images2016/banner/home/1000-500.jpg?123
云服务器 div.tempWrap > ul > a > img
www.west.cn/m/images2016/banner/home/1000-500.jpg?123
西部数码 div#globalWrapper > header.header-nav > a.logo > img
m.west.cn/m/images2016/logo_2x.png
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img
m.west.cn/m/images2016/home/cloudhost_rm_2x.jpg
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img
m.west.cn/m/images2016/home/cloudhost_bz_2x.jpg
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img
m.west.cn/m/images2016/home/cloudhost_sw_2x.jpg
高防云服务器 div.tempWrap > ul > a > img
云虚机 div.tempWrap > ul > a > img
便宜域名 div.tempWrap > ul > a > img
云服务器 div.tempWrap > ul > a > img
云虚机 div.tempWrap > ul > a > img
高防云服务器 div.tempWrap > ul > a > img

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
●Optimize viewport for mobile
●Minify CSS
●Avoids enormous network payloads Total size was 537 KiB
●User Timing marks and measures 5 user timings
●JavaScript execution time 0.4 s
●Minimizes main-thread work 1.2 s
●Avoid long main-thread tasks 2 long tasks found
●Network Requests
●Network Round Trip Times 230 ms
●Server Backend Latencies 200 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 410 ms
○INP breakdown
○Avoid non-composited animations
○Avoid large layout shifts
52

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
查域名 section.domain_reg > form#J_domainForm > p.domain_serach > a.large-btn
更多域名>> section.domain_reg > div#J_domainList > label > a.moredomain
云服务器 section > ul#J_serverTab > li.active > a.nav_text_nav
西南枢纽 div.list_box > span.list_text > p > span.list_suffix
¥115/月 div.list_content_div > div.list_box > span.list_sell > p
¥115 div.list_box > span.list_sell > p > span.list_sell_price
立即购买 div.list_content_div > div.list_box > span.list_sell > a.btn
西南枢纽 div.list_box > span.list_text > p > span.list_suffix
¥153/月 div.list_content_div > div.list_box > span.list_sell > p
¥153 div.list_box > span.list_sell > p > span.list_sell_price
立即购买 div.list_content_div > div.list_box > span.list_sell > a.btn
西南枢纽 div.list_box > span.list_text > p > span.list_suffix
¥261/月 div.list_content_div > div.list_box > span.list_sell > p
¥261 div.list_box > span.list_sell > p > span.list_sell_price
立即购买 div.list_content_div > div.list_box > span.list_sell > a.btn
最新公告 section.module-f > ul#J_newsTab > li.active > a.nav_text_nav

Low-contrast text is difficult or impossible for many users to read. Link text that is discernible improves the experience for users with low vision. Learn how to make links distinguishable.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
网站地图 footer#g_footer > div.copyright > p > a.blue-link

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
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img

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#globalWrapper > header.header-nav > div.head_btn > a div#globalWrapper > header.header-nav > div.head_btn > 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.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div#J_banner > div.slide-wrapper > div.tempWrap > ul

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

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

One main landmark helps screen reader users navigate a web page. Learn more about landmarks.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
html html

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>`
●Form elements have associated labels
●Document has a `<title>` element
●`<html>` element has a `[lang]` attribute
●`<html>` element has a valid value for its `[lang]` attribute
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●Touch targets have sufficient size and spacing.
●The page contains a heading, skip link, or landmark region
●Image elements do not have `[alt]` attributes that are redundant text.
●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
○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
○Buttons have an accessible name
○`<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
○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
○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.
62

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 URLRequest Resolution
m.west.cn/?mobileAllowed

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.
m.west.cn/tongji/westtj.js?v1.0.0.1 line 269, col 17
●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
●Page has valid source maps
○Redirects HTTP traffic to HTTPS
85

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 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
div#globalWrapper > header.header-nav > div.head_btn > a div#globalWrapper > header.header-nav > div.head_btn > a
云服务器 section > ul#J_serverTab > li.active > a.nav_text_nav
国内虚拟主机 section > ul#J_serverTab > li > a.nav_text_nav
免备案虚拟主机 section > ul#J_serverTab > li > a.nav_text_nav

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.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > img
div.list_content_div > div.list_box > span.list_imgbox > img div.list_content_div > div.list_box > span.list_imgbox > 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`

Send Feedback