Spain · Madrid Completed: Apr 22, 2026 23:12 UTCMobile 375 × 812
Desktop 1440 × 900
Score: 72 / 100
Based on 8 categories, 0 sections
Decent speed, but optimizing further could improve engagement.
Several missing protections leave your users and data exposed.
Several issues make your site difficult for assistive technology users.
Solid SEO basics — a few optimizations could boost rankings.
Solid infrastructure — fast server responses across the board.
Mostly compliant — a few items need attention.
Rich content metadata — your pages look great everywhere.
Reasonable footprint with room for optimization.
The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.
Weights reflect general web best practices. Individual needs may differ.
Content-Security-Policy header is missing
Security gaps expose your site and users to attacks, eroding trust.
Cookie 'server_name_session' is missing the Secure flag
Security gaps expose your site and users to attacks, eroding trust.
No Content-Security-Policy header found
Security gaps expose your site and users to attacks, eroding trust.
Page weighs 5.1 MB (4.6 MB transferred)
Performance issues directly impact user engagement and conversion rates.
1 button(s) with no accessible text
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
High impact, low effort — start here.
High impact, requires investment.
Small gains, minimal effort.
Nothing in this quadrant — good news.
Low impact, high effort — do last.
Nothing in this quadrant — good news.
[](https://beavercheck.com/results/6fd99f1f-4e64-4816-8d31-7defcd551caf)<a href="https://beavercheck.com/results/6fd99f1f-4e64-4816-8d31-7defcd551caf"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fbt.cn" alt="BeaverCheck Score"></a>https://beavercheck.com/badge?url=https%3A%2F%2Fbt.cnThis badge auto-updates with your latest scan result.
Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 7.9s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Addressing the critical issues below would have the most immediate impact on your user trust.
5 barrier(s) likely increasing bounce by ~26%.
Page takes 7.9s to load
+12% bounceUsers abandon at ~3s — you're 5.4s over the 2.5s threshold
Fix: Optimize render-blocking resources, preload the hero image, and compress images
No Content-Security-Policy header
+1% bounceHigher XSS blast radius — one compromised script can exfiltrate the checkout form
Fix: Ship a reporting-only CSP first, then enforce once violations are clean
Thin content
+3% bounceUnder 300 words — visitors bounce looking for substance, search engines rank competitors first
Fix: Add a substantive FAQ, product detail, or case-study section
No skip-to-content link
+1% bounceKeyboard 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
4 broken link(s) on the page
+5% bounceClicks 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.
¥1,750 investment → ¥22,255/month returns + CNY 50,000,000 risk avoided
¥1,750
5h · 5 findings
¥22,255 /mo
~¥267,055 / year
CNY 50,000,000
if kept compliant
¥525 — 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.
5.0 developer hours at ¥350/hr
Based on China rates (¥350/hr)
Start here for the best return on investment
¥4,166,675 / month at risk
~¥50,000,100 / year if left unfixed
¥50,000,000
+2 more
¥8.35 /mo
14610.3 MB/mo × 0.571 CNY/GB
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.
Unique monthly visitors from your analytics
Purchases, signups, or key actions
Optional — for revenue estimation
more engaged visitors from reduced bounce
Fix 5 critical issues to capture this value
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
Your data stays in your browser — nothing is sent to our servers
Thanks for your feedback!
We'll use a cached audit if available, or offer to scan.
Industry-standard audits powered by Google Lighthouse.
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.
4.13 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.95 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
117 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.020
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
9.18 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.
7.95 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
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
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
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.
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.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Est Savings |
|---|---|
| www.bt.cn/static/astro/woff2/fa-solid-900.woff2 | 565 ms |
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.
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
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
宝塔面板视频 div.story-track > div.story-slide > div.flex > img.home-banner-image-one | www.bt.cn/static/astro/images/home/banner-1/bt_video.gif | 2.7 MiB | 2.7 MiB |
证书管理 div.story-track > div.story-slide > div.w-[1400px] > img.home-banner-images | www.bt.cn/static/astro/images/home/banner-1/banner-bg-3.png | 314.0 KiB | 197.0 KiB |
宝塔面板 div.story-track > div.story-slide > div.flex > img.home-banner-images | www.bt.cn/static/astro/images/home/banner-1/banner-bg-1.png | 273.6 KiB | 156.7 KiB |
域名管理 div.story-track > div.story-slide > div.w-[1400px] > img.absolute | www.bt.cn/static/astro/images/home/banner-1/banner-domain-overview.png | 167.2 KiB | 138.5 KiB |
域名管理 div.story-track > div.story-slide > div.w-[1400px] > img.home-banner-images | www.bt.cn/static/astro/images/home/banner-1/banner-bg-2.png | 227.9 KiB | 111.0 KiB |
证书管理 div.story-track > div.story-slide > div.w-[1400px] > img.absolute | www.bt.cn/static/astro/images/home/banner-1/banner-ssl-overview.png | 96.9 KiB | 77.9 KiB |
协会 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/xiehui.png | 61.7 KiB | 60.6 KiB |
研究院 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/yanjiu.png | 60.1 KiB | 58.8 KiB |
微信客服二维码 div.footer-qrcode > div.footer-qrcode-box > div#footer-customer-btn > img.footer-qr-thumbnail | www.bt.cn/static/astro/images/wechat/wechat-customer.png | 51.2 KiB | 49.4 KiB |
富力 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/fuli.png | 32.8 KiB | 31.3 KiB |
湖南 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/hunan.png | 30.2 KiB | 29.0 KiB |
快速创建并管理你的网站 div.overview-container > div#overview-gallery > div.gallery-img > img.gallery-img__img | www.bt.cn/static/astro/images/home/overview-tabs/tabs/website.png | 99.4 KiB | 28.3 KiB |
快速创建/管理网站 div.mb-4 > div.mobile-tabs-wrapper > ul.mobile-tabs-list > li.mobile-tab-item | www.bt.cn/static/astro/images/home/overview-tabs/tabs-active.png | 35.8 KiB | 24.5 KiB |
宝塔交流群二维码 div.footer-qrcode > div.footer-qrcode-box > div#footer-group-btn > img.footer-qr-thumbnail | www.bt.cn/static/astro/images/wechat/wechat-group.png | 13.7 KiB | 13.1 KiB |
宝塔面板 div.story-track > div.story-slide > div.flex > img.home-banner-image-two | www.bt.cn/static/astro/images/decoration/panel-pc.png | 12.1 KiB | 7.8 KiB |
div.footer-bottom > div.footer-bottom-links > a.footer-bottom-link > img.inline-block div.footer-bottom > div.footer-bottom-links > a.footer-bottom-link > img.inline-block | aqyzmedia.yunaq.com/labels/label_sm_90020.png | 7.9 KiB | 7.5 KiB |
Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.
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
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| www.bt.cn/static/astro/css/1111-1.css?version=1776821593 | 53.6 KiB | 315 ms |
| www.bt.cn/static/astro/css/index.css?version=1776821593 | 3.2 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| bt.cn/ | 1.5 s |
| www.bt.cn/ | 1.6 s |
| www.bt.cn/new/index.html | 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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.bt.cn/static/astro/css/1111-1.css?version=1776821593 | 53.3 KiB | 45.5 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
Performance issues directly impact user engagement and conversion rates.
| Category | Time Spent |
|---|---|
| Other | 1.3 s |
| Rendering | 1.1 s |
| Style & Layout | 1.0 s |
| Script Evaluation | 518 ms |
| Parse HTML & CSS | 38 ms |
| Script Parsing & Compilation | 26 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
Performance issues directly impact user engagement and conversion rates.
| Failure reason | Failure type |
|---|---|
| The page has an unload handler in the main frame. | Actionable |
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
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
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.bt.cn/static/astro/js/utils-vendor.js?version=1776821593 | 59.9 KiB | 41.5 KiB |
| www.bt.cn/static/astro/js/vue-vendor.js?version=1776821593 | 38.6 KiB | 35.4 KiB |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
研究院 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/yanjiu.png |
研究院 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/yanjiu.png |
湖南 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/hunan.png |
湖南 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/hunan.png |
富力 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/fuli.png |
富力 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/fuli.png |
协会 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/xiehui.png |
协会 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/xiehui.png |
执行安装命令 ol.flex > li.h-[330px] > div.w-full > img.w-auto | www.bt.cn/static/astro/images/home/step/command.svg |
访问面板 ol.flex > li.h-[330px] > div.w-full > img.w-auto | www.bt.cn/static/astro/images/home/step/panel.svg |
通过SSH连接服务器 ol.flex > li.h-[330px] > div.w-full > img.w-auto | www.bt.cn/static/astro/images/home/step/download.svg |
div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 | www.bt.cn/static/astro/images/home/free-icon.png |
div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 | www.bt.cn/static/astro/images/home/free-icon.png |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
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立即咨询 main.body-main > story-carousel#story-carousel-a94vs43 > div.story-track > div.story-slide |
宝塔，
安全高效
的服务器运维面板
全球超2000万台服务器安装宝塔，近300万注册用户使用宝塔，持续更新维护9年值得信赖
立即免费安装宝塔面板
运维服务 main.body-main > story-carousel#story-carousel-a94vs43 > div.story-track > div.story-slide |
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
body.overflow-x-hidden > div#floating-actions > div.inline-block > button#floating-qr-service body.overflow-x-hidden > div#floating-actions > div.inline-block > button#floating-qr-service |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.footer-container > div.footer-bottom > div.footer-bottom-links > a.footer-bottom-link div.footer-container > div.footer-bottom > div.footer-bottom-links > a.footer-bottom-link |
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.
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
全球超2000万台服务器安装宝塔，近300万注册用户使用宝塔，持续更新维护9年值得信赖 div.home-banner-header > div.flex > div.flex > div.lg:text-[18px] |
运维服务 div.home-banner-header > div.banner-btn-group > a#home-service-btn > div.mobile-title |
简单高效的服务器运维面板，让服务器管理更轻松， 查看更多功能 »» main.body-main > div.pt-[40px] > div.gap-[10px] > div.md:text-[18px] |
查看更多功能 »» div.pt-[40px] > div.gap-[10px] > div.md:text-[18px] > a.text-bt |
多种不同品牌的(HTTPS)SSL证书快速接入，保障您网站安全，提升用户信任度 div.mx-auto > section.w-full > a.p-10 > p.mt-2 |
宝塔团队拥有10余年服务器运维行业经验，为您的业务保驾护航 div.mx-auto > section.w-full > a.p-10 > p.mt-2 |
提供价格实惠的域名注册服务，价格透明，无需隐藏费用，一键快速注册 div.mx-auto > section.w-full > a.p-10 > p.mt-2 |
万+ ul.w-full > li.flex > div.text-bt > span.ml-1 |
海量用户关注，信赖倍增 ul.w-full > li.flex > div.flex > span.text-[#787a79] |
于中央大型政企广泛使用 ul.w-full > li.flex > div.flex > span.text-[#787a79] |
万+ ul.w-full > li.flex > div.text-bt > span.ml-1 |
超过220万注册用户 ul.w-full > li.flex > div.flex > span.text-[#787a79] |
支持一键 LAMP/LNMP/集群/监控/网站/FTP/数据库/JAVA 等 100+ 服务器管理能力 main.body-main > div.pt-[40px] > div.gap-[10px] > div.md:text-[18px] |
使用堡塔 SSH 终端快速连接服务器，免去复杂密钥配置，保障连接安全与效率。 div.mx-auto > ol.flex > li.h-[330px] > p.mt-2 |
复制下方安装命令，在 SSH 终端中执行，快速开始安装面板。 div.mx-auto > ol.flex > li.h-[330px] > p.mt-2 |
安装完成后，按照提示访问链接并使用初始账号密码登录，开始管理服务器。 div.mx-auto > ol.flex > li.h-[330px] > p.mt-2 |
首次登录根据业务需要一键安装网站环境配置。 div.mx-auto > ol.flex > li.h-[330px] > p.mt-2 |
更多安装方式 div.pt-[40px] > div.mx-auto > section.flex > a.btn |
立即安装 div#openclaw-notification > div.notification-card > div.relative > a.flex |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
查看更多功能 »» div.pt-[40px] > div.gap-[10px] > div.md:text-[18px] > a.text-bt |
These are opportunities to improve the legibility of your content.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
域名注册服务 div.story-track > div.story-slide > div.max-w-[1400px] > h3.mb-4 |
These are opportunities to improve keyboard navigation in your application.
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| Unload event listeners are deprecated and will be removed. | hm.baidu.com/hm.js?6e78ef648057d9f2ab12dcc287b440f6 line 1, col 274 |
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.
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
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
产品与服务 nav.nav-main > ol.nav-items > li.nav-item-dropdown > a.nav-link |
推广与入驻 nav.nav-main > ol.nav-items > li.nav-item-dropdown > a.nav-link |
运维服务 div.story-slide > div.home-banner-header > div.banner-btn-group > a#home-service-btn |
运维服务 div.story-slide > div.home-banner-header > div.banner-btn-group > a.flex-col |
To appear in search results, crawlers need access to your app.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 |
hreflang links tell search engines what version of a page they should list in search results for a given language or region. Learn more about `hreflang`.
Performance issues directly impact user engagement and conversion rates.
head > link |
Canonical links suggest which URL to show in search results. Learn more about canonical links.
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.
Industry-standard audits powered by Google Lighthouse. — Desktop
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.
2.68 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.25 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.029
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.60 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.
4.26 s
Audit breakdown by category with detailed findings.
Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.
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
Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.
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.
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.
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.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Est Savings |
|---|---|
| www.bt.cn/static/astro/woff2/fa-solid-900.woff2 | 575 ms |
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.
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
Performance issues directly impact user engagement and conversion rates.
| URL | Resource Size | Est Savings | |
|---|---|---|---|
宝塔面板视频 div.story-track > div.story-slide > div.flex > img.home-banner-image-one | www.bt.cn/static/astro/images/home/banner-1/bt_video.gif | 2.7 MiB | 2.6 MiB |
域名管理 div.story-track > div.story-slide > div.w-[1400px] > img.absolute | www.bt.cn/static/astro/images/home/banner-1/banner-domain-overview.png | 167.2 KiB | 129.7 KiB |
证书管理 div.story-track > div.story-slide > div.w-[1400px] > img.home-banner-images | www.bt.cn/static/astro/images/home/banner-1/banner-bg-3.png | 314.0 KiB | 118.6 KiB |
宝塔面板 div.story-track > div.story-slide > div.flex > img.home-banner-images | www.bt.cn/static/astro/images/home/banner-1/banner-bg-1.png | 273.6 KiB | 78.3 KiB |
证书管理 div.story-track > div.story-slide > div.w-[1400px] > img.absolute | www.bt.cn/static/astro/images/home/banner-1/banner-ssl-overview.png | 96.9 KiB | 72.0 KiB |
协会 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/xiehui.png | 61.7 KiB | 61.1 KiB |
研究院 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/yanjiu.png | 60.1 KiB | 59.4 KiB |
微信客服二维码 div.footer-qrcode > div.footer-qrcode-box > div#footer-customer-btn > img.footer-qr-thumbnail | www.bt.cn/static/astro/images/wechat/wechat-customer.png | 51.2 KiB | 50.7 KiB |
域名管理 div.story-track > div.story-slide > div.w-[1400px] > img.home-banner-images | www.bt.cn/static/astro/images/home/banner-1/banner-bg-2.png | 227.9 KiB | 47.5 KiB |
南京审计 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/njsj.png | 34.2 KiB | 33.3 KiB |
富力 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/fuli.png | 32.8 KiB | 31.9 KiB |
湖南 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/hunan.png | 30.2 KiB | 29.5 KiB |
快速创建/管理网站
快速创建并管理你的网站便捷的网站管理功能，例如域名绑定，一键部署SSL证书，更改网站配置等功能 div.overview-container > div.hidden > ul.overview-list > li.item | www.bt.cn/static/astro/images/home/overview-tabs/tabs-active.png | 35.8 KiB | 24.5 KiB |
宝塔交流群二维码 div.footer-qrcode > div.footer-qrcode-box > div#footer-group-btn > img.footer-qr-thumbnail | www.bt.cn/static/astro/images/wechat/wechat-group.png | 13.7 KiB | 13.5 KiB |
div.footer-bottom > div.footer-bottom-links > a.footer-bottom-link > img.inline-block div.footer-bottom > div.footer-bottom-links > a.footer-bottom-link > img.inline-block | aqyzmedia.yunaq.com/labels/label_sm_90020.png | 7.9 KiB | 7.7 KiB |
Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.
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
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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Duration |
|---|---|---|
| www.bt.cn/static/astro/css/1111-1.css?version=1776821593 | 53.6 KiB | 98 ms |
| www.bt.cn/static/astro/css/index.css?version=1776821593 | 3.2 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.
Performance issues directly impact user engagement and conversion rates.
| URL | Time Spent |
|---|---|
| bt.cn/ | 853 ms |
| www.bt.cn/ | 1.1 s |
| www.bt.cn/new/index.html | 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.
Performance issues directly impact user engagement and conversion rates.
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.
Performance issues directly impact user engagement and conversion rates.
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.bt.cn/static/astro/css/1111-1.css?version=1776821593 | 53.3 KiB | 45.2 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
Performance issues directly impact user engagement and conversion rates.
| Failure reason | Failure type |
|---|---|
| The page has an unload handler in the main frame. | Actionable |
Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.
Multi-megabyte JavaScript bundles delay every interactive feature on the page.
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
| URL | Transfer Size | Est Savings |
|---|---|---|
| www.bt.cn/static/astro/js/utils-vendor.js?version=1776821593 | 59.9 KiB | 41.5 KiB |
| www.bt.cn/static/astro/js/vue-vendor.js?version=1776821593 | 38.6 KiB | 35.4 KiB |
Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.
Performance issues directly impact user engagement and conversion rates.
Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions
Performance issues directly impact user engagement and conversion rates.
| URL | |
|---|---|
南京审计 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/njsj.png |
南京审计 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/njsj.png |
南京审计 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/njsj.png |
研究院 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/yanjiu.png |
研究院 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/yanjiu.png |
研究院 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/yanjiu.png |
湖南 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/hunan.png |
湖南 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/hunan.png |
湖南 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/hunan.png |
富力 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/fuli.png |
富力 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/fuli.png |
富力 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/fuli.png |
协会 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/xiehui.png |
协会 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/xiehui.png |
协会 div#viewport > div#track > div.card > img.!max-w-[80%] | www.bt.cn/static/astro/images/trust/xiehui.png |
执行安装命令 ol.flex > li.h-[330px] > div.w-full > img.w-auto | www.bt.cn/static/astro/images/home/step/command.svg |
初始化配置 ol.flex > li.h-[330px] > div.w-full > img.w-auto | www.bt.cn/static/astro/images/home/step/init.svg |
访问面板 ol.flex > li.h-[330px] > div.w-full > img.w-auto | www.bt.cn/static/astro/images/home/step/panel.svg |
通过SSH连接服务器 ol.flex > li.h-[330px] > div.w-full > img.w-auto | www.bt.cn/static/astro/images/home/step/download.svg |
div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 | www.bt.cn/static/astro/images/home/free-icon.png |
div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 | www.bt.cn/static/astro/images/home/free-icon.png |
More information about the performance of your application. These numbers don't directly affect the Performance score.
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.
Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
SSL证书 安全防护 为您的网站保驾护航
提供多品牌SSL证书服务，支持DV、OV、EV等多种验证级别，为您的网站数据传输提供银行级加密保护。
专业团队技术支… main.body-main > story-carousel#story-carousel-a94vs43 > div.story-track > div.story-slide |
宝塔，
安全高效
的服务器运维面板
全球超2000万台服务器安装宝塔，近300万注册用户使用宝塔，持续更新维护9年值得信赖
立即免费安装宝塔面板
宝塔1v1安… main.body-main > story-carousel#story-carousel-a94vs43 > div.story-track > div.story-slide |
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.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
body.overflow-x-hidden > div#floating-actions > div.inline-block > button#floating-qr-service body.overflow-x-hidden > div#floating-actions > div.inline-block > button#floating-qr-service |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 |
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.footer-container > div.footer-bottom > div.footer-bottom-links > a.footer-bottom-link div.footer-container > div.footer-bottom > div.footer-bottom-links > a.footer-bottom-link |
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.
Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
注册 nav.nav-bar > div#nav-auth > div#auth-buttons > a.btn |
全球超2000万台服务器安装宝塔，近300万注册用户使用宝塔，持续更新维护9年值得信赖 div.home-banner-header > div.flex > div.flex > div.lg:text-[18px] |
宝塔1v1安全运维服务 div.home-banner-header > div.banner-btn-group > a#home-service-btn > div.main-title |
02. ul.overview-list > li.item > div.btn-tab > span.num |
03. ul.overview-list > li.item > div.btn-tab > span.num |
04. ul.overview-list > li.item > div.btn-tab > span.num |
05. ul.overview-list > li.item > div.btn-tab > span.num |
多种不同品牌的(HTTPS)SSL证书快速接入，保障您网站安全，提升用户信任度 div.mx-auto > section.w-full > a.p-10 > p.mt-2 |
宝塔团队拥有10余年服务器运维行业经验，为您的业务保驾护航 div.mx-auto > section.w-full > a.p-10 > p.mt-2 |
提供价格实惠的域名注册服务，价格透明，无需隐藏费用，一键快速注册 div.mx-auto > section.w-full > a.p-10 > p.mt-2 |
海量用户关注，信赖倍增 ul.w-full > li.flex > div.flex > span.text-[#787a79] |
于中央大型政企广泛使用 ul.w-full > li.flex > div.flex > span.text-[#787a79] |
超过220万注册用户 ul.w-full > li.flex > div.flex > span.text-[#787a79] |
支持一键 LAMP/LNMP/集群/监控/网站/FTP/数据库/JAVA 等 100+ 服务器管理能力 main.body-main > div.pt-[40px] > div.gap-[10px] > div.md:text-[18px] |
使用堡塔 SSH 终端快速连接服务器，免去复杂密钥配置，保障连接安全与效率。 div.mx-auto > ol.flex > li.h-[330px] > p.mt-2 |
复制下方安装命令，在 SSH 终端中执行，快速开始安装面板。 div.mx-auto > ol.flex > li.h-[330px] > p.mt-2 |
安装完成后，按照提示访问链接并使用初始账号密码登录，开始管理服务器。 div.mx-auto > ol.flex > li.h-[330px] > p.mt-2 |
首次登录根据业务需要一键安装网站环境配置。 div.mx-auto > ol.flex > li.h-[330px] > p.mt-2 |
更多安装方式 div.pt-[40px] > div.mx-auto > section.flex > a.btn |
立即安装 div#openclaw-notification > div.notification-card > div.relative > a.flex |
These are opportunities to improve the legibility of your content.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
域名注册服务 div.story-track > div.story-slide > div.max-w-[1400px] > h3.mb-4 |
These are opportunities to improve keyboard navigation in your application.
Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.
Performance issues directly impact user engagement and conversion rates.
| Deprecation / Warning | Source |
|---|---|
| Unload event listeners are deprecated and will be removed. | hm.baidu.com/hm.js?6e78ef648057d9f2ab12dcc287b440f6 line 1, col 274 |
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.
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
Performance issues directly impact user engagement and conversion rates.
| Uncrawlable Link |
|---|
产品与服务 nav.nav-main > ol.nav-items > li.nav-item-dropdown > a.nav-link |
推广与入驻 nav.nav-main > ol.nav-items > li.nav-item-dropdown > a.nav-link |
宝塔1v1安全运维服务 div.story-slide > div.home-banner-header > div.banner-btn-group > a#home-service-btn |
宝塔1v1安全运维服务 div.story-slide > div.home-banner-header > div.banner-btn-group > a.flex-col |
To appear in search results, crawlers need access to your app.
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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 div.flex > div.flex > h1.xl:text-[56px] > img.ml-4 |
hreflang links tell search engines what version of a page they should list in search results for a given language or region. Learn more about `hreflang`.
Performance issues directly impact user engagement and conversion rates.
head > link |
Canonical links suggest which URL to show in search results. Learn more about canonical links.
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.
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