Spain · Madrid Completed: Apr 21, 2026 20:43 UTCMobile 375 × 812
Desktop 1440 × 900
Score: 72 / 100
Based on 8 categories, 0 sections
Fast site — your users get a smooth experience.
Several missing protections leave your users and data exposed.
Major barriers for users with disabilities — up to 15% of your audience.
Well-optimized for search — your content is discoverable.
Good server performance with room for optimization.
Mostly compliant — a few items need attention.
Good content signals with minor gaps.
Lean and efficient — low environmental impact per visit.
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.
No Content-Security-Policy header found
Security gaps expose your site and users to attacks, eroding trust.
11 image-only link(s) without alt text
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
18 image-in-link without alt text
Accessibility issues exclude users with disabilities — up to 15% of your potential audience.
20 image(s) missing alt attribute
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/2fe59d1f-6aae-40ce-b974-905d07a7dc7c)<a href="https://beavercheck.com/results/2fe59d1f-6aae-40ce-b974-905d07a7dc7c"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fcnblogs.com" alt="BeaverCheck Score"></a>https://beavercheck.com/badge?url=https%3A%2F%2Fcnblogs.comThis badge auto-updates with your latest scan result.
Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.
7 barrier(s) likely increasing bounce by ~29%.
Page takes 4.6s to load
+12% bounceUsers abandon at ~3s — you're 2.1s over the 2.5s threshold
Fix: Optimize render-blocking resources, preload the hero image, and compress images
Mixed content on HTTPS page
+8% bounceBrowsers block insecure subresources — broken images, missing scripts, warning badge
Fix: Change http:// URLs inside the page to https:// (or protocol-relative)
No HSTS header
+1% bounceReturning visitors are briefly exposed to downgrade attacks on first request
Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains
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
No structured data
+2% bounceNo rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices
Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)
8 link(s) with generic text ("click here", "read more")
+1% bounceScreen-reader users navigating by link list see no context — and search engines can't infer relevance
Fix: Rewrite with descriptive phrases that identify the destination
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
Preliminary CRO audit — each barrier links to the tab with detailed analysis.
¥1,925 investment → ¥12,846/month returns + CNY 50,000,000 risk avoided
¥1,925
6h · 5 findings
¥12,846 /mo
~¥154,155 / year
CNY 50,000,000
if kept compliant
¥350 — 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.
5.5 developer hours at ¥350/hr
Based on China rates (¥350/hr)
Start here for the best return on investment
¥4,166,668 / month at risk
~¥50,000,013 / year if left unfixed
¥50,000,000
+1 more
¥1.09 /mo
1899.4 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.
4.59 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.59 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
74 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.69 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.
6.64 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.
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.
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 |
|---|---|---|
| assets.cnblogs.com/scripts/jquery-3.3.1.min.js | 30.1 KiB | 1.3 s |
| /js/aggsite-new.min.js?v=IgggDUGX9TUGTatF8b3WO8A4-JU6Svvk... | 15.0 KiB | 1.4 s |
| /css/aggsite-mobile-new.min.css?v=YMpXmij1nWQn-rD5YaD-ysY... | 1.8 KiB | |
| /css/aggsite-new.min.css?v=7sib-h13OYZwJEAWQ_Ga4Iv03GPTQ-... | 4.9 KiB |
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.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| assets.cnblogs.com/images/ghs.png | 86400.0 s | 19.0 KiB |
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 | |
|---|---|---|---|
div#side_right > div#cnblogs_b4 > a > img div#side_right > div#cnblogs_b4 > a > img | img2024.cnblogs.com/blog/35695/202603/35695-20260305163238916-712956342.jpg | 76.5 KiB | 39.1 KiB |
div#side_right > div#cnblogs_b2 > a > img div#side_right > div#cnblogs_b2 > a > img | img2024.cnblogs.com/blog/35695/202604/35695-20260415221132085-1775010472.webp | 70.1 KiB | 32.8 KiB |
div#footer_bottom > div.beian > a.gongan > img div#footer_bottom > div.beian > a.gongan > img | assets.cnblogs.com/images/ghs.png | 18.8 KiB | 18.7 KiB |
div#side_right > div#cnblogs_b3 > a > img div#side_right > div#cnblogs_b3 > a > img | img2024.cnblogs.com/blog/35695/202512/35695-20251205182619157-1150461542.webp | 54.6 KiB | 17.2 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3784694/20260401160101.png | 5.9 KiB | 5.5 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3708248/20250926144504.png | 5.6 KiB | 5.2 KiB |
div#side_right > div#cnblogs_b1 > a > img div#side_right > div#cnblogs_b1 > a > img | img2024.cnblogs.com/blog/35695/202512/35695-20251201125434258-461912837.webp | 19.9 KiB | 4.7 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3693259/20260319124404.png | 5.0 KiB | 4.6 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3578564/20241218184338.png | 4.6 KiB | 4.2 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/534218/20200616131310.png | 4.5 KiB | 4.2 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 |
|---|---|
| cnblogs.com/ | 1.3 s |
| www.cnblogs.com/ | 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.
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.googletagmanager.com/gtag/js?id=G-M95P3TTWJZ | 157.0 KiB | 64.5 KiB |
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 | |
|---|---|
博客园Logo ul.navbar-list > li.navbar-branding > a > img | www.cnblogs.com/images/logo.svg?v=2SMrXdIvlZwVoB1akyXm38WIKuTHVqvGD0CweV-B6cY |
ul.navbar-list > li.dropdown > div.dropdown-button > img ul.navbar-list > li.dropdown > div.dropdown-button > img | www.cnblogs.com/images/aggsite/pulldown-bold.svg |
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.
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 |
|---|
分类 ul.sidenav > li#sidenav_category > a > span |
精华 ul.sidenav > li#sidenav_pick > a > span |
订阅 ul.sidenav > li#sidenav_subscription > a > span |
关注 ul.sidenav > li#sidenav_following > a > span |
我评 ul.sidenav > li#sidenav_commented > a > span |
我赞 ul.sidenav > li#sidenav_digged > a > span |
足迹 ul.sidenav > li#sidenav_history > a > span |
··· div#pager_bottom > div#paging_block > div.pager > span.ellipsis |
100 div#pager_bottom > div#paging_block > div.pager > a.p_100 |
48小时阅读排行 div#side_right > div.card > h4.card-title > a |
10天推荐排行 div#side_right > div.card > h4.card-title > a |
15天热门博文 div#side_right > div.card > h4.card-title > a |
编辑推荐 div#side_right > div.card > h4.card-title > a |
热门新闻 div#side_right > div.card > h4.card-title > a |
推荐新闻 div#side_right > div.card > h4.card-title > a |
战略合作：Chat2DB凌霞软件 body > div#wrapper > footer#footer > div.ally-link |
Chat2DB div#wrapper > footer#footer > div.ally-link > a |
凌霞软件 div#wrapper > footer#footer > div.ally-link > a |
Powered by .NET 10.0 on Kubernetes div#wrapper > footer#footer > div#footer_bottom > div.poweredby |
关于博客园 footer#footer > div#footer_bottom > div.about > a |
联系我们 footer#footer > div#footer_bottom > div.about > a |
商务合作 footer#footer > div#footer_bottom > div.about > a |
企业博客 footer#footer > div#footer_bottom > div.about > a |
企业发布 footer#footer > div#footer_bottom > div.about > a |
Copyright © 2004-2026 博客园 版权所有 footer#footer > div#footer_bottom > div.about > span |
浙公网安备 33010602011771号 div#footer_bottom > div.beian > a.gongan > span |
浙ICP备2021040463号-3 footer#footer > div#footer_bottom > div.beian > a |
违法和不良信息举报中心 footer#footer > div#footer_bottom > div.report-contact > a |
举报邮箱：contact@cnblogs.com footer#footer > div#footer_bottom > div.report-contact > span |
网站举报中心 footer#footer > div#footer_bottom > div.report-contact > a |
These are opportunities to improve the legibility of your content.
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 |
|---|
ul.navbar-list > li.dropdown > div.dropdown-button > img ul.navbar-list > li.dropdown > div.dropdown-button > img |
div#side_right > div#cnblogs_b1 > a > img div#side_right > div#cnblogs_b1 > a > img |
div#side_right > div#cnblogs_b2 > a > img div#side_right > div#cnblogs_b2 > a > img |
div#side_right > div#cnblogs_b3 > a > img div#side_right > div#cnblogs_b3 > a > img |
div#side_right > div#cnblogs_b4 > a > img div#side_right > div#cnblogs_b4 > a > img |
div#footer_bottom > div.beian > a.gongan > img div#footer_bottom > div.beian > a.gongan > 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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
body > div#wrapper > a body > div#wrapper > a |
div#main > div#side_right > div#cnblogs_b1 > a div#main > div#side_right > div#cnblogs_b1 > a |
div#main > div#side_right > div#cnblogs_b2 > a div#main > div#side_right > div#cnblogs_b2 > a |
div#main > div#side_right > div#cnblogs_b3 > a div#main > div#side_right > div#cnblogs_b3 > a |
div#main > div#side_right > div#cnblogs_b4 > a div#main > div#side_right > div#cnblogs_b4 > 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.
A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
ul.navbar-list > li > form#zzk_search_mobile > input#zzk_search_input_mobile ul.navbar-list > li > form#zzk_search_mobile > input#zzk_search_input_mobile |
These are opportunities to improve keyboard navigation in your application.
Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
搜索 ul.navbar-list > li > form#zzk_search_mobile > button#zzk_search_button_mobile |
» div.card > ul > li > a.right_more |
» div.card > ul > li > a.right_more |
» div.card > ul > li > a.right_more |
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
These items highlight common accessibility best practices.
Image natural dimensions should be proportional to the display size and the pixel ratio to maximize image clarity. Learn how to provide responsive images.
Performance issues directly impact user engagement and conversion rates.
| URL | Displayed size | Actual size | Expected size | |
|---|---|---|---|---|
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3693259/20260319124404.png | 48 x 48 | 48 x 48 | 72 x 72 |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3784694/20260401160101.png | 48 x 48 | 48 x 48 | 72 x 72 |
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?866c9be12d4a814454792b1fd0fed295 line 1, col 274 |
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
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
Access to script at 'https://cdn-www.cnblogs.com/ng/main-ia2uqgxu.js' from origin 'https://www.cnblogs.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. | |
Access to script at 'https://cdn-www.cnblogs.com/ng/polyfills-jq6heycx.js' from origin 'https://www.cnblogs.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED |
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 |
|---|
nav#nav_main > ul#nav_right > li#navbar_login_status > a#navbar_lite_mode_indicator |
简洁模式 ...
li#navbar_login_status > div#user_info > div#navbar_menu > a#navbar_lite_mode_toggle |
退出登录 li#navbar_login_status > div#user_info > div#navbar_menu > a |
发现 ul.navbar-list > li.dropdown > div.dropdown-button > a |
退出 ul.navbar-list > li#user_info_mobile > div.dropdown-menu > a |
更多
ul.sidenav > li#sidenav_more > div.dropdown-button > a |
div#side_nav > ul.sidenav > li#dark_switch > a div#side_nav > ul.sidenav > li#dark_switch > a |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19890716 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19904194 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903757 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19897604 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903938 |
1 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903842 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903293 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903270 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902860 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902842 |
3 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902722 |
2 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902693 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902643 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902499 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19901906 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19901796 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19901456 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19901328 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19899804 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19899767 |
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 |
|---|
ul.navbar-list > li.dropdown > div.dropdown-button > img ul.navbar-list > li.dropdown > div.dropdown-button > img |
div#side_right > div#cnblogs_b1 > a > img div#side_right > div#cnblogs_b1 > a > img |
div#side_right > div#cnblogs_b2 > a > img div#side_right > div#cnblogs_b2 > a > img |
div#side_right > div#cnblogs_b3 > a > img div#side_right > div#cnblogs_b3 > a > img |
div#side_right > div#cnblogs_b4 > a > img div#side_right > div#cnblogs_b4 > a > img |
div#footer_bottom > div.beian > a.gongan > img div#footer_bottom > div.beian > a.gongan > img |
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.
2.48 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.13 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.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.55 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.
3.13 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.
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.
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 |
|---|---|---|
| /js/aggsite-new.min.js?v=IgggDUGX9TUGTatF8b3WO8A4-JU6Svvk... | 14.9 KiB | 676 ms |
| assets.cnblogs.com/scripts/jquery-3.3.1.min.js | 30.1 KiB | 551 ms |
| /css/aggsite-new.min.css?v=7sib-h13OYZwJEAWQ_Ga4Iv03GPTQ-... | 4.9 KiB |
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.
| Request | Cache TTL | Transfer Size |
|---|---|---|
| assets.cnblogs.com/images/ghs.png | 86400.0 s | 19.1 KiB |
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 | |
|---|---|---|---|
div#side_right > div#cnblogs_b4 > a > img div#side_right > div#cnblogs_b4 > a > img | img2024.cnblogs.com/blog/35695/202603/35695-20260305163238916-712956342.jpg | 76.5 KiB | 64.3 KiB |
div#side_right > div#cnblogs_b2 > a > img div#side_right > div#cnblogs_b2 > a > img | img2024.cnblogs.com/blog/35695/202604/35695-20260415221132085-1775010472.webp | 70.1 KiB | 57.9 KiB |
div#side_right > div#cnblogs_b3 > a > img div#side_right > div#cnblogs_b3 > a > img | img2024.cnblogs.com/blog/35695/202512/35695-20251205182619157-1150461542.webp | 54.6 KiB | 42.4 KiB |
div#footer_bottom > div.beian > a.gongan > img div#footer_bottom > div.beian > a.gongan > img | assets.cnblogs.com/images/ghs.png | 18.8 KiB | 18.7 KiB |
div#wrapper > a > div.imagebar > img div#wrapper > a > div.imagebar > img | img2024.cnblogs.com/blog/35695/202604/35695-20260413214144970-407851675.webp | 21.0 KiB | 16.3 KiB |
div#side_right > div#cnblogs_b1 > a > img div#side_right > div#cnblogs_b1 > a > img | img2024.cnblogs.com/blog/35695/202512/35695-20251201125434258-461912837.webp | 19.9 KiB | 14.9 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3784694/20260401160101.png | 5.9 KiB | 5.5 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3708248/20250926144504.png | 5.6 KiB | 5.2 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3693259/20260319124404.png | 5.0 KiB | 4.6 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/3578564/20241218184338.png | 4.6 KiB | 4.2 KiB |
博主头像 div.post-item-text > p.post-item-summary > a > img.avatar | pic.cnblogs.com/face/534218/20200616131310.png | 4.5 KiB | 4.2 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 |
|---|---|
| cnblogs.com/ | 760 ms |
| www.cnblogs.com/ | 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 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.googletagmanager.com/gtag/js?id=G-M95P3TTWJZ | 157.0 KiB | 63.1 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 |
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 | |
|---|---|
div#wrapper > a > div.imagebar > img div#wrapper > a > div.imagebar > img | img2024.cnblogs.com/blog/35695/202604/35695-20260413214144970-407851675.webp |
博客园Logo ul#nav_left > li.navbar-branding > a > img | www.cnblogs.com/images/logo.svg?v=2SMrXdIvlZwVoB1akyXm38WIKuTHVqvGD0CweV-B6cY |
ul.sidenav > li#dark_switch > a > img ul.sidenav > li#dark_switch > a > img | www.cnblogs.com/images/aggsite/dark.svg |
ul.sidenav > li#sidenav_history > a > img ul.sidenav > li#sidenav_history > a > img | www.cnblogs.com/images/aggsite/history.svg |
ul.sidenav > li#sidenav_category > a > img ul.sidenav > li#sidenav_category > a > img | www.cnblogs.com/images/aggsite/category.svg |
ul.sidenav > li#sidenav_pick > a > img ul.sidenav > li#sidenav_pick > a > img | www.cnblogs.com/images/aggsite/picked.svg |
ul.sidenav > li#sidenav_candidate > a > img ul.sidenav > li#sidenav_candidate > a > img | www.cnblogs.com/images/aggsite/candidate.svg |
ul.sidenav > li#sidenav_subscription > a > img ul.sidenav > li#sidenav_subscription > a > img | www.cnblogs.com/images/aggsite/subscription.svg |
ul.sidenav > li#sidenav_following > a > img ul.sidenav > li#sidenav_following > a > img | www.cnblogs.com/images/aggsite/following.svg |
ul.sidenav > li#sidenav_commented > a > img ul.sidenav > li#sidenav_commented > a > img | www.cnblogs.com/images/aggsite/commented.svg |
ul.sidenav > li#sidenav_digged > a > img ul.sidenav > li#sidenav_digged > a > img | www.cnblogs.com/images/aggsite/digged.svg |
ul#nav_left > li.dropdown > div.dropdown-button > img ul#nav_left > li.dropdown > div.dropdown-button > img | www.cnblogs.com/images/aggsite/pulldown-light.svg |
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.
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 |
|---|
反馈 ul.sidenav > li.sidenav-item > a.feedback > span |
··· div#pager_bottom > div#paging_block > div.pager > span.ellipsis |
100 div#pager_bottom > div#paging_block > div.pager > a.p_100 |
48小时阅读排行 div#side_right > div.card > h4.card-title > a |
10天推荐排行 div#side_right > div.card > h4.card-title > a |
15天热门博文 div#side_right > div.card > h4.card-title > a |
编辑推荐 div#side_right > div.card > h4.card-title > a |
热门新闻 div#side_right > div.card > h4.card-title > a |
推荐新闻 div#side_right > div.card > h4.card-title > a |
战略合作：Chat2DB凌霞软件 body > div#wrapper > footer#footer > div.ally-link |
Chat2DB div#wrapper > footer#footer > div.ally-link > a |
凌霞软件 div#wrapper > footer#footer > div.ally-link > a |
友情链接：
艾思科蓝
飞致云
阿里云
腾讯云
华为云
天翼云
站长之家
腾讯WeTest
IShell body > div#wrapper > footer#footer > div#friend_link |
艾思科蓝 div#wrapper > footer#footer > div#friend_link > a |
飞致云 div#wrapper > footer#footer > div#friend_link > a |
阿里云 div#wrapper > footer#footer > div#friend_link > a |
腾讯云 div#wrapper > footer#footer > div#friend_link > a |
华为云 div#wrapper > footer#footer > div#friend_link > a |
天翼云 div#wrapper > footer#footer > div#friend_link > a |
站长之家 div#wrapper > footer#footer > div#friend_link > a |
腾讯WeTest div#wrapper > footer#footer > div#friend_link > a |
IShell div#wrapper > footer#footer > div#friend_link > a |
Powered by .NET 10.0 on Kubernetes div#wrapper > footer#footer > div#footer_bottom > div.poweredby |
关于博客园 footer#footer > div#footer_bottom > div.about > a |
联系我们 footer#footer > div#footer_bottom > div.about > a |
商务合作 footer#footer > div#footer_bottom > div.about > a |
企业博客 footer#footer > div#footer_bottom > div.about > a |
企业发布 footer#footer > div#footer_bottom > div.about > a |
Copyright © 2004-2026 博客园 版权所有 footer#footer > div#footer_bottom > div.about > span |
浙公网安备 33010602011771号 div#footer_bottom > div.beian > a.gongan > span |
浙ICP备2021040463号-3 footer#footer > div#footer_bottom > div.beian > a |
违法和不良信息举报中心 footer#footer > div#footer_bottom > div.report-contact > a |
举报邮箱：contact@cnblogs.com footer#footer > div#footer_bottom > div.report-contact > span |
网站举报中心 footer#footer > div#footer_bottom > div.report-contact > a |
These are opportunities to improve the legibility of your content.
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 |
|---|
ul#nav_left > li.dropdown > div.dropdown-button > img ul#nav_left > li.dropdown > div.dropdown-button > img |
div#wrapper > a > div.imagebar > img div#wrapper > a > div.imagebar > img |
ul.sidenav > li#sidenav_category > a > img ul.sidenav > li#sidenav_category > a > img |
ul.sidenav > li#sidenav_pick > a > img ul.sidenav > li#sidenav_pick > a > img |
ul.sidenav > li#sidenav_candidate > a > img ul.sidenav > li#sidenav_candidate > a > img |
ul.sidenav > li#sidenav_subscription > a > img ul.sidenav > li#sidenav_subscription > a > img |
ul.sidenav > li#sidenav_following > a > img ul.sidenav > li#sidenav_following > a > img |
ul.sidenav > li#sidenav_commented > a > img ul.sidenav > li#sidenav_commented > a > img |
ul.sidenav > li#sidenav_digged > a > img ul.sidenav > li#sidenav_digged > a > img |
ul.sidenav > li#sidenav_history > a > img ul.sidenav > li#sidenav_history > a > img |
li#sidenav_more > div.dropdown-button > a > img li#sidenav_more > div.dropdown-button > a > img |
ul.sidenav > li.sidenav-item > a.feedback > img ul.sidenav > li.sidenav-item > a.feedback > img |
ul.sidenav > li#dark_switch > a > img ul.sidenav > li#dark_switch > a > img |
div#side_right > div#cnblogs_b1 > a > img div#side_right > div#cnblogs_b1 > a > img |
div#side_right > div#cnblogs_b2 > a > img div#side_right > div#cnblogs_b2 > a > img |
div#side_right > div#cnblogs_b3 > a > img div#side_right > div#cnblogs_b3 > a > img |
div#side_right > div#cnblogs_b4 > a > img div#side_right > div#cnblogs_b4 > a > img |
div#footer_bottom > div.beian > a.gongan > img div#footer_bottom > div.beian > a.gongan > 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.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
body > div#wrapper > a body > div#wrapper > a |
div#side_nav > ul.sidenav > li#dark_switch > a div#side_nav > ul.sidenav > li#dark_switch > a |
div#main > div#side_right > div#cnblogs_b1 > a div#main > div#side_right > div#cnblogs_b1 > a |
div#main > div#side_right > div#cnblogs_b2 > a div#main > div#side_right > div#cnblogs_b2 > a |
div#main > div#side_right > div#cnblogs_b3 > a div#main > div#side_right > div#cnblogs_b3 > a |
div#main > div#side_right > div#cnblogs_b4 > a div#main > div#side_right > div#cnblogs_b4 > 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.
A value greater than 0 implies an explicit navigation ordering. Although technically valid, this often creates frustrating experiences for users who rely on assistive technologies. Learn more about the `tabindex` attribute.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
ul#nav_right > li > form#zzk_search > input#zzk_search_input ul#nav_right > li > form#zzk_search > input#zzk_search_input |
These are opportunities to improve keyboard navigation in your application.
Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
搜索 ul#nav_right > li > form#zzk_search > button#zzk_search_button |
» div.card > ul > li > a.right_more |
» div.card > ul > li > a.right_more |
» div.card > ul > li > a.right_more |
» div.card > ul > li > a.right_more |
One main landmark helps screen reader users navigate a web page. Learn more about landmarks.
Performance issues directly impact user engagement and conversion rates.
| Failing Elements |
|---|
html html |
These items highlight common accessibility best practices.
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?866c9be12d4a814454792b1fd0fed295 line 1, col 274 |
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
Performance issues directly impact user engagement and conversion rates.
| Source | Description |
|---|---|
Access to script at 'https://cdn-www.cnblogs.com/ng/main-ia2uqgxu.js' from origin 'https://www.cnblogs.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. | |
Access to script at 'https://cdn-www.cnblogs.com/ng/polyfills-jq6heycx.js' from origin 'https://www.cnblogs.com' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. | |
Failed to load resource: net::ERR_FAILED | |
Failed to load resource: net::ERR_FAILED |
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 |
|---|
nav#nav_main > ul#nav_right > li#navbar_login_status > a#navbar_lite_mode_indicator |
简洁模式 ...
li#navbar_login_status > div#user_info > div#navbar_menu > a#navbar_lite_mode_toggle |
退出登录 li#navbar_login_status > div#user_info > div#navbar_menu > a |
发现 ul.navbar-list > li.dropdown > div.dropdown-button > a |
退出 ul.navbar-list > li#user_info_mobile > div.dropdown-menu > a |
更多 ul.sidenav > li#sidenav_more > div.dropdown-button > a |
div#side_nav > ul.sidenav > li#dark_switch > a div#side_nav > ul.sidenav > li#dark_switch > a |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19890716 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19904194 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903757 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19897604 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903938 |
1 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903842 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903293 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19903270 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902860 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902842 |
3 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902722 |
2 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902693 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902643 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19902499 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19901906 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19901796 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19901456 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19901328 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19899804 |
0 article.post-item > section.post-item-body > footer.post-item-foot > a#digg_control_19899767 |
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 |
|---|
ul#nav_left > li.dropdown > div.dropdown-button > img ul#nav_left > li.dropdown > div.dropdown-button > img |
div#wrapper > a > div.imagebar > img div#wrapper > a > div.imagebar > img |
ul.sidenav > li#sidenav_category > a > img ul.sidenav > li#sidenav_category > a > img |
ul.sidenav > li#sidenav_pick > a > img ul.sidenav > li#sidenav_pick > a > img |
ul.sidenav > li#sidenav_candidate > a > img ul.sidenav > li#sidenav_candidate > a > img |
ul.sidenav > li#sidenav_subscription > a > img ul.sidenav > li#sidenav_subscription > a > img |
ul.sidenav > li#sidenav_following > a > img ul.sidenav > li#sidenav_following > a > img |
ul.sidenav > li#sidenav_commented > a > img ul.sidenav > li#sidenav_commented > a > img |
ul.sidenav > li#sidenav_digged > a > img ul.sidenav > li#sidenav_digged > a > img |
ul.sidenav > li#sidenav_history > a > img ul.sidenav > li#sidenav_history > a > img |
li#sidenav_more > div.dropdown-button > a > img li#sidenav_more > div.dropdown-button > a > img |
ul.sidenav > li.sidenav-item > a.feedback > img ul.sidenav > li.sidenav-item > a.feedback > img |
ul.sidenav > li#dark_switch > a > img ul.sidenav > li#dark_switch > a > img |
div#side_right > div#cnblogs_b1 > a > img div#side_right > div#cnblogs_b1 > a > img |
div#side_right > div#cnblogs_b2 > a > img div#side_right > div#cnblogs_b2 > a > img |
div#side_right > div#cnblogs_b3 > a > img div#side_right > div#cnblogs_b3 > a > img |
div#side_right > div#cnblogs_b4 > a > img div#side_right > div#cnblogs_b4 > a > img |
div#footer_bottom > div.beian > a.gongan > img div#footer_bottom > div.beian > a.gongan > img |
Format your HTML in a way that enables crawlers to better understand your app’s content.
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