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https://22.cn

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
5
REVIEW
3
PASS
7
INFO
2

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
37
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
75
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
83
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

9.73 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

24.74 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

61 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.371

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

16.53 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.

25.00 s

Page Load Progression

2.0 s
3.9 s
5.9 s
7.8 s
9.8 s
11.7 s
13.7 s
15.7 s
Checks
17
7 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
4.0 MB transferred, 111 requests
FIX
4.0 MB transferred, 111 requests
Critical::
Page weighs 4.3 MB (4.0 MB transferred)
Warning::
Images are 2.9 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.9 MB
Info::
CSS is 432 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 432 KB
Warning::
111 HTTP requests — consider bundling or reducing
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
Info::
Estimated 0.85 g CO2 per page load
4.0 MB / 2.4 MB budget
4.0 MB transferred
111 requests
0.85 g CO2 per page load
Images 2.9 MiB 72%
JavaScript 472.5 KiB 11%
CSS 432.5 KiB 10%
HTML 248.9 KiB 6%
Other 5.3 KiB 0%
Other 1.5 KiB 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.

Why this matters

CSS bundle is large — purge unused styles (PurgeCSS, Tailwind JIT) to reduce CSS payload.

Source: web.dev

Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.

Why this matters

High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.

Source: web.dev

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (4.0 MiB of 4.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2125ms total JS execution
FIX
2125ms total JS execution
Warning::
https://www.22.cn/: 732ms CPU time
Warning::
Unattributable: 715ms CPU time
Warning::
https://www.22.cn/content/js/jquery-1.10.2.js: 516ms CPU time
Info::
https://hm.baidu.com/hm.js?c37800fabdf21cf4f786cb0...: 104ms CPU time
Info::
https://g.alicdn.com/aliyun-documentation/web-chat...: 58ms CPU time
Warning::
Third-party scripts: 2125ms (100% of total)

Main Thread Breakdown

Other 40% Script Evaluation 21% Style & Layout 16% Rendering 15% Parse HTML & CSS 5%
ScriptTotalScriptingParse/CompileParty
https://www.22.cn/732ms53ms7ms3rd
Unattributable715ms57ms0ms3rd
https://www.22.cn/content/js/jquery-1.10.2.js516ms210ms10ms3rd
https://hm.baidu.com/hm.js?c37800fabdf21cf4f786cb0d5f794f12104ms83ms3ms3rd
https://g.alicdn.com/aliyun-documentation/web-chatbot-ui/0.0.24/index.js58ms49ms2ms3rd
D
JS Bundles
Action
18 scripts, 194 KB unused
FIX
18 scripts, 194 KB unused
Warning::
https://g.alicdn.com/aliyun-documentation/web-chat...: 98 KB unused (62%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.22.cn/Content/js/bootstrap.min.js: 40 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.22.cn/Content/js/bootstrap.min.js: unminified — 11 KB could be saved
Warning::
https://www.22.cn/Content/bootstrap/dist/js/bootst...: 30 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.22.cn/content/js/jquery-1.10.2.js: 27 KB unused (30%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 194 KB
194 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://g.alicdn.com/aliyun-documentation/web-chatbot-ui/0.0.24/index.js157 KB98 KB (62%)✓3rd
https://www.22.cn/Content/js/bootstrap.min.js48 KB40 KB (83%)✗3rd
https://www.22.cn/Content/bootstrap/dist/js/bootstrap.min.js36 KB30 KB (82%)✓3rd
https://www.22.cn/content/js/jquery-1.10.2.js91 KB27 KB (30%)✓3rd
https://www.22.cn/Content/js/am.extend.js?t=202009221 KB—✓3rd
https://www.22.cn/content/js/jquery.flexslider.js54 KB—✗3rd
https://www.22.cn/Content/layer/layer.js22 KB—✓3rd
https://www.22.cn/Content/layer/layer.ex.js?v=202405107 KB—✗3rd
https://www.22.cn/Content/js/jquery.cookie.js1 KB—✓3rd
https://www.22.cn/Content/js/_top.js?t=2022111813 KB—✗3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

D
Page Weight Inventory
Action
111 resources · 4.0 MB · 194 KB savings available
FIX
111 resources · 4.0 MB · 194 KB savings available
Warning::
Page weight 3.0 MB over 1MB target
Got: 4.0 MB Expected: ≤ 1 MB
Info::
~194 KB of savings available
Warning::
110 third-party resources (100% of weight)
Info::
3 resources over 200KB
111 resources · 4.0 MiB · 110 third-party 3.0 MiB over 1MB target
Image 72% · 2.9 MiB
JavaScript 11% · 472.5 KiB
CSS 10% · 432.5 KiB
Document 6% · 250.6 KiB
Other 0% · 3.8 KiB

~193.9 KiB of savings available

Remove unused JavaScript: 193.9 KiB
C
Image Optimization
Action
82 images, 0 KB saveable
REVIEW
82 images, 0 KB saveable
Warning::
https://www.22.cn/content/images/22zsl.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.22.cn/images/icon_single_facile.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ad-img-show.22.cn/0-20260302144841682.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ad-img-show.22.cn/0-20230526142516929.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.22.cn/images/icon_single_am01.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.22.cn/content/images/zsl.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.22.cn/images/icon_single_am02.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.22.cn/images/icon_single_am03.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ad-img-show.22.cn/0-20260421172532527.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.22.cn/Content/images/small_logo.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.22.cn/images/icon_single_fast.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.22.cn/images/icon_single_safe.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ad-img-show.22.cn/0-20260410093320462.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://ad-img-show.22.cn/0-20260107151920277.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
82 images 2.9 MB
0 oversized -0 KB
82 legacy format
14 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
private
REVIEW
private
Info::
Cache-Control header is set
Got: private
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

private

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
Network Waterfall
111 requests over 13431ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s FCP 9.7 s LCP 24.7 shttps://22.cn// https://22.cn/ — 301 — 141 B — 659 ms — h2https://www.22.cn/www.22.cn/ https://www.22.cn/ — 200 — 248.6 KiB — 4.2 s — http/1.1https://www.22.cn/Content/bootstrap/dist/css/bootstrap.min.csswww.22.cn/Content/bootstrap/dist/cs... https://www.22.cn/Content/bootstrap/dist/css/bootstrap.min.css — 200 — 118.8 KiB — 2.1 s — http/1.1https://www.22.cn/content/js/jquery-1.10.2.jswww.22.cn/content/js/jquery-1.10.2.... https://www.22.cn/content/js/jquery-1.10.2.js — 200 — 91.2 KiB — 2.1 s — http/1.1https://www.22.cn/content/js/common.js?t=20220315www.22.cn/content/js/common.js?t=20... https://www.22.cn/content/js/common.js?t=20220315 — 200 — 3.8 KiB — 648 ms — http/1.1https://www.22.cn/Content/bootstrap/dist/js/bootstrap.min.jswww.22.cn/Content/bootstrap/dist/js... https://www.22.cn/Content/bootstrap/dist/js/bootstrap.min.js — 200 — 36.4 KiB — 1.9 s — http/1.1https://www.22.cn/Content/js/jquery.cookie.jswww.22.cn/Content/js/jquery.cookie.... https://www.22.cn/Content/js/jquery.cookie.js — 200 — 988 B — 866 ms — http/1.1https://www.22.cn/content/css/main.css?t=20221228www.22.cn/content/css/main.css?t=20... https://www.22.cn/content/css/main.css?t=20221228 — 200 — 288.6 KiB — 3.0 s — http/1.1https://www.22.cn/content/bootstrap/assets/js/ie-emulation-modes-warning.jswww.22.cn/content/bootstrap/assets/... https://www.22.cn/content/bootstrap/assets/js/ie-emulation-modes-warning.js — 200 — 2.4 KiB — 1.1 s — http/1.1https://www.22.cn/Content/js/bootstrap.min.jswww.22.cn/Content/js/bootstrap.min.... https://www.22.cn/Content/js/bootstrap.min.js — 200 — 47.8 KiB — 2.0 s — http/1.1https://www.22.cn/Content/layer/layer.jswww.22.cn/Content/layer/layer.js https://www.22.cn/Content/layer/layer.js — 200 — 21.9 KiB — 2.7 s — http/1.1https://www.22.cn/Content/layer/layer.ex.js?v=20240510www.22.cn/Content/layer/layer.ex.js... https://www.22.cn/Content/layer/layer.ex.js?v=20240510 — 200 — 6.6 KiB — 2.2 s — http/1.1https://www.22.cn/Content/js/am.extend.js?t=20200922www.22.cn/Content/js/am.extend.js?t... https://www.22.cn/Content/js/am.extend.js?t=20200922 — 200 — 1.0 KiB — 2.4 s — http/1.1https://www.22.cn/images/weixin_nav(1).jpgwww.22.cn/images/weixin_nav(1).jpg https://www.22.cn/images/weixin_nav(1).jpg — 200 — 7.7 KiB — 220 ms — http/1.1https://www.22.cn/content/images/app_qr_top.pngwww.22.cn/content/images/app_qr_top... https://www.22.cn/content/images/app_qr_top.png — 200 — 37.0 KiB — 1.1 s — http/1.1https://www.22.cn/content/images/xiaochengxu_wsp.jpgwww.22.cn/content/images/xiaochengx... https://www.22.cn/content/images/xiaochengxu_wsp.jpg — 200 — 16.5 KiB — 857 ms — http/1.1https://www.22.cn/Content/layer/theme/default/layer.css?v=3.1.1www.22.cn/Content/layer/theme/defau... https://www.22.cn/Content/layer/theme/default/layer.css?v=3.1.1 — 200 — 14.3 KiB — 222 ms — http/1.1https://www.22.cn/Content/layer/theme/am/style.csswww.22.cn/Content/layer/theme/am/st... https://www.22.cn/Content/layer/theme/am/style.css — 200 — 2.3 KiB — 269 ms — http/1.1https://www.22.cn/Content/js/_top.js?t=20221118www.22.cn/Content/js/_top.js?t=2022... https://www.22.cn/Content/js/_top.js?t=20221118 — 200 — 12.6 KiB — 271 ms — http/1.1https://www.22.cn/js/SSOControl.js?t=20161117www.22.cn/js/SSOControl.js?t=201611... https://www.22.cn/js/SSOControl.js?t=20161117 — 200 — 6.2 KiB — 288 ms — http/1.1https://www.22.cn/content/images/load-log.pngwww.22.cn/content/images/load-log.p... https://www.22.cn/content/images/load-log.png — 200 — 12.4 KiB — 581 ms — http/1.1https://www.22.cn/content/images/close.pngwww.22.cn/content/images/close.png https://www.22.cn/content/images/close.png — 200 — 3.8 KiB — 427 ms — http/1.1https://www.22.cn/Content/images/logo.pngwww.22.cn/Content/images/logo.png https://www.22.cn/Content/images/logo.png — 200 — 10.1 KiB — 220 ms — http/1.1https://www.22.cn/Content/images/small_logo.pngwww.22.cn/Content/images/small_logo... https://www.22.cn/Content/images/small_logo.png — 200 — 6.4 KiB — 267 ms — http/1.1https://www.22.cn/content/js/jquery.flexslider.jswww.22.cn/content/js/jquery.flexsli... https://www.22.cn/content/js/jquery.flexslider.js — 200 — 54.3 KiB — 534 ms — http/1.1https://www.22.cn/content/js/index.js?v=120520260423www.22.cn/content/js/index.js?v=120... https://www.22.cn/content/js/index.js?v=120520260423 — 200 — 14.3 KiB — 802 ms — http/1.1https://w.cnzz.com/c.php?id=906087&async=1w.cnzz.com/c.php?id=906087&async=1 https://w.cnzz.com/c.php?id=906087&async=1 — 200 — 372 B — 1.7 s — h2https://hm.baidu.com/hm.js?c37800fabdf21cf4f786cb0d5f794f12hm.baidu.com/hm.js?c37800fabdf21cf4... https://hm.baidu.com/hm.js?c37800fabdf21cf4f786cb0d5f794f12 — 200 — 11.9 KiB — 1.4 s — http/1.1https://www.22.cn/content/images/icon_home.pngwww.22.cn/content/images/icon_home.... https://www.22.cn/content/images/icon_home.png — 200 — 59.2 KiB — 513 ms — http/1.1https://www.22.cn/content/images/zsl.pngwww.22.cn/content/images/zsl.png https://www.22.cn/content/images/zsl.png — 200 — 16.3 KiB — 535 ms — http/1.1
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s FCP 9.7 s LCP 24.7 shttps://22.cn// https://22.cn/ — 301 — 141 B — 659 ms — h2https://www.22.cn/www.22.cn/ https://www.22.cn/ — 200 — 248.6 KiB — 4.2 s — http/1.1https://www.22.cn/Content/bootstrap/dist/css/bootstrap.min.csswww.22.cn/Content/bootstrap/dist/cs... https://www.22.cn/Content/bootstrap/dist/css/bootstrap.min.css — 200 — 118.8 KiB — 2.1 s — http/1.1https://www.22.cn/content/js/jquery-1.10.2.jswww.22.cn/content/js/jquery-1.10.2.... https://www.22.cn/content/js/jquery-1.10.2.js — 200 — 91.2 KiB — 2.1 s — http/1.1https://www.22.cn/content/js/common.js?t=20220315www.22.cn/content/js/common.js?t=20... https://www.22.cn/content/js/common.js?t=20220315 — 200 — 3.8 KiB — 648 ms — http/1.1https://www.22.cn/Content/bootstrap/dist/js/bootstrap.min.jswww.22.cn/Content/bootstrap/dist/js... https://www.22.cn/Content/bootstrap/dist/js/bootstrap.min.js — 200 — 36.4 KiB — 1.9 s — 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h2https://ad-img-show.22.cn/0-20251225113153446.jpgad-img-show.22.cn/0-202512251131534... https://ad-img-show.22.cn/0-20251225113153446.jpg — 200 — 19.5 KiB — 3.6 s — h2https://www.22.cn/content/images/home_icon/tip_icon.pngwww.22.cn/content/images/home_icon/... https://www.22.cn/content/images/home_icon/tip_icon.png — 200 — 2.1 KiB — 270 ms — http/1.1https://www.22.cn/content/images/home_icon/bm_reg.pngwww.22.cn/content/images/home_icon/... https://www.22.cn/content/images/home_icon/bm_reg.png — 200 — 2.2 KiB — 267 ms — http/1.1https://www.22.cn/content/images/home_icon/pt_reg.pngwww.22.cn/content/images/home_icon/... https://www.22.cn/content/images/home_icon/pt_reg.png — 200 — 1.8 KiB — 271 ms — http/1.1https://www.22.cn/content/images/home_icon/guoji_brand.pngwww.22.cn/content/images/home_icon/... https://www.22.cn/content/images/home_icon/guoji_brand.png — 200 — 2.0 KiB — 217 ms — http/1.1https://www.22.cn/content/images/home_icon/ssl_sectigo.pngwww.22.cn/content/images/home_icon/... https://www.22.cn/content/images/home_icon/ssl_sectigo.png — 200 — 5.2 KiB — 220 ms — http/1.1https://ad-img-show.22.cn/1cb71a4c1f4c46bba13deff2d33d30d5.jpgad-img-show.22.cn/1cb71a4c1f4c46bba... https://ad-img-show.22.cn/1cb71a4c1f4c46bba13deff2d33d30d5.jpg — 200 — 42.5 KiB — 630 ms — h2https://ad-img-show.22.cn/0-20251215175118802.jpgad-img-show.22.cn/0-202512151751188... https://ad-img-show.22.cn/0-20251215175118802.jpg — 200 — 21.8 KiB — 593 ms — h2https://ad-img-show.22.cn/0-20220422105211816.jpgad-img-show.22.cn/0-202204221052118... https://ad-img-show.22.cn/0-20220422105211816.jpg — 200 — 52.9 KiB — 673 ms — h2https://www.22.cn/favicon.icowww.22.cn/favicon.ico https://www.22.cn/favicon.ico — 200 — 1.4 KiB — 220 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 2125ms · 509KB · ¥105/mo
www.22.cn
Other
Costly
Execution 732ms
Transfer 249 KB
Monthly Cost ¥36/mo
Unattributable
Other
Costly
Execution 715ms
Transfer 0 KB
Monthly Cost ¥35/mo
www.22.cn
Other
Costly
Execution 516ms
Transfer 91 KB
Unused 30%
Monthly Cost ¥25/mo
hm.baidu.com
Other
Optional
Execution 104ms
Transfer 12 KB
Monthly Cost ¥5/mo
g.alicdn.com
Other
Optional
Execution 58ms
Transfer 157 KB
Unused 62%
Monthly Cost ¥3/mo

These scripts may cost more than they're worth

  • www.22.cn adds 732ms and costs ~¥36/month
  • Unattributable adds 715ms and costs ~¥35/month
  • www.22.cn adds 516ms and costs ~¥25/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.22.cn takes 732ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

Unattributable takes 715ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

www.22.cn takes 516ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

62% of g.alicdn.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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