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https://chinaz.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
3
REVIEW
5
PASS
5
INFO
2

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

Mobile Desktop
66
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
47
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.
82
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.

2.93 s

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

2.93 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.

0.077

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

2.93 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.

2.93 s

Page Load Progression

920 ms
1.8 s
2.8 s
3.7 s
4.6 s
5.5 s
6.4 s
7.4 s
Checks
15
5 PASS 5 REVIEW 3 FIX
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 (1.7 MiB of 1.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
84 resources · 1.7 MB · 58 KB savings available
FIX
84 resources · 1.7 MB · 58 KB savings available
Warning::
Page weight 684 KB over 1MB target
Got: 1.7 MB Expected: ≤ 1 MB
Info::
~58 KB of savings available
Warning::
83 third-party resources (100% of weight)
Info::
2 resources over 200KB
84 resources · 1.7 MiB · 83 third-party 683.8 KiB over 1MB target
Image 81% · 1.3 MiB
JavaScript 10% · 173.7 KiB
CSS 3% · 48.1 KiB
Font 3% · 46.6 KiB
Document 2% · 37.5 KiB
Other 1% · 21.9 KiB

~58.3 KiB of savings available

Remove unused JavaScript: 58.3 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Page Weight Budget
Action
1.7 MB transferred, 84 requests
REVIEW
1.7 MB transferred, 84 requests
Info::
Page weighs 2.3 MB (1.7 MB transferred)
Warning::
Images are 1.3 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.3 MB
Info::
84 HTTP requests
Info::
Estimated 0.35 g CO2 per page load
1.7 MB / 2.4 MB budget
1.7 MB transferred
84 requests
0.35 g CO2 per page load
Images 1.3 MiB 81%
JavaScript 173.7 KiB 10%
CSS 48.1 KiB 3%
Fonts 46.6 KiB 3%
HTML 37.4 KiB 2%
Other 21.9 KiB 1%
Other 1.8 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit

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

C
Image Optimization
Action
38 images, 0 KB saveable
REVIEW
38 images, 0 KB saveable
Warning::
https://img.chinaz.com/ghs.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.chinaz.com/images/1551.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.chinaz.com/2020/topic/zt.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.chinaz.com/2020/img/comqrcode.jpg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
38 images 1.3 MB
0 oversized -0 KB
36 legacy format
4 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

B
JS Execution Cost
947ms total JS execution
REVIEW
947ms total JS execution
Warning::
https://www.chinaz.com/: 422ms CPU time
Info::
https://img.chinaz.com/2020/js/jsLibrary.min.js?20...: 192ms CPU time
Info::
https://a2put.chinaz.com/propagate.js: 134ms CPU time
Info::
Unattributable: 132ms CPU time
Info::
https://scripts.clarity.ms/0.8.60-beta/clarity.js: 68ms CPU time
Warning::
Third-party scripts: 947ms (100% of total)

Main Thread Breakdown

Script Evaluation 36% Style & Layout 26% Other 22% Rendering 12%
ScriptTotalScriptingParse/CompileParty
https://www.chinaz.com/422ms11ms3ms3rd
https://img.chinaz.com/2020/js/jsLibrary.min.js?20230118192ms114ms5ms3rd
https://a2put.chinaz.com/propagate.js134ms98ms4ms3rd
Unattributable132ms2ms0ms3rd
https://scripts.clarity.ms/0.8.60-beta/clarity.js68ms54ms2ms3rd
B
JS Bundles
14 scripts, 58 KB unused
REVIEW
14 scripts, 58 KB unused
Warning::
https://img.chinaz.com/2020/js/jsLibrary.min.js?20...: 31 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cbjs.baidu.com/js/m.js: 28 KB unused (72%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://a2put.chinaz.com/propagate.js: unminified — 3 KB could be saved
Info::
Total unused JavaScript: 58 KB
58 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://img.chinaz.com/2020/js/jsLibrary.min.js?2023011861 KB31 KB (51%)✓3rd
https://cbjs.baidu.com/js/m.js39 KB28 KB (72%)✓3rd
https://img.chinaz.com/2020/js/stat.min.js?202304082 KB—✓3rd
https://a2put.chinaz.com/propagate.js7 KB—✗3rd
https://img.chinaz.com/2020/js/index.min.js?202406176 KB—✓3rd
https://img.chinaz.com/2020/js/uc1.js?202109063 KB—✓3rd
https://img.chinaz.com/2020/js/ads.min.js0 KB—✓3rd
https://jiathis.com/chinaz.js2 KB—✓3rd
https://s3a.pstatp.com/toutiao/push.js?4cfdb223e891cf1f7a8493066b49191b6bfdfbb4781bf324694a057100b6892c2c91ada014dc54ccec48e49a36cfb213da3c4653a8a63a7559dd4e22a9844d090 KB—✓3rd
https://img.chinaz.com/2020/js/media.js?202304066 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

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

Green Hosting

No green hosting detected

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
2 fonts (47 KB)
PASS
2 fonts (47 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

47 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s FCP 2.9 s LCP 2.9 sdata:application/x-font-woff2;charset=utf-8;base64,d09GMgABAAAAAEqQAAsAAAAAhPQAAEo/AAEAAAAAAAAAAAAA…AAEAAAAAAAAAAAAA… data:application/x-font-woff2;charset=utf-8;base64,d09GMgABAAAAAEqQAAsAAAAAhPQAAEo/AAEAAAAAAAAAAAAA… — 18.6 KiB — 21 ms — font-display: swaphttps://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.woff2?t=1666080683524font_1052300_kp811a2o6q... https://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.woff2?t=1666080683524 — 27.9 KiB — 11 ms — font-display: swap
AAEAAAAAAAAAAAAA… woff2 swap
Size 19 KB
Load time 21 ms
Start 2.0 s
Risk FOUT — text flashes from fallback to web font
font_1052300_kp811a2o6q... woff2 swap
Size 28 KB
Load time 11 ms
Start 2.1 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
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
Network Waterfall
84 requests over 5087ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.9 s LCP 2.9 shttps://chinaz.com// https://chinaz.com/ — 301 — 78 B — 690 ms — h2https://www.chinaz.com/www.chinaz.com/ https://www.chinaz.com/ — 200 — 37.4 KiB — 243 ms — h2https://img.chinaz.com/2020/css/home.min.css?2023041212img.chinaz.com/2020/css/home.min.cs... https://img.chinaz.com/2020/css/home.min.css?2023041212 — 200 — 46.2 KiB — 152 ms — h2https://img.chinaz.com/2020/js/ads.min.jsimg.chinaz.com/2020/js/ads.min.js https://img.chinaz.com/2020/js/ads.min.js — 200 — 388 B — 162 ms — h2https://cbjs.baidu.com/js/m.jscbjs.baidu.com/js/m.js https://cbjs.baidu.com/js/m.js — 200 — 38.8 KiB — 1.1 s — h2https://a2put.chinaz.com/propagate.jsa2put.chinaz.com/propagate.js https://a2put.chinaz.com/propagate.js — 200 — 6.7 KiB — 913 ms — h2https://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.cssat.alicdn.com/t/c/font_1052300_kp81... https://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.css — 200 — 1.9 KiB — 383 ms — h2https://img.chinaz.com/2020/img/comqrcode.jpgimg.chinaz.com/2020/img/comqrcode.j... https://img.chinaz.com/2020/img/comqrcode.jpg — 200 — 17.7 KiB — 156 ms — h2https://img.chinaz.com/2020/img/chinaz-logo.pngimg.chinaz.com/2020/img/chinaz-logo... https://img.chinaz.com/2020/img/chinaz-logo.png — 200 — 13.4 KiB — 160 ms — h2https://pic.chinaz.com/2026/0421/26042103260422683955.jpgpic.chinaz.com/2026/0421/2604210326... https://pic.chinaz.com/2026/0421/26042103260422683955.jpg — 200 — 147.1 KiB — 663 ms — h2https://pic.chinaz.com/thumb/2023/1025/23102511354261768221.jpgpic.chinaz.com/thumb/2023/1025/2310... https://pic.chinaz.com/thumb/2023/1025/23102511354261768221.jpg — 200 — 17.3 KiB — 84 ms — h2https://pic.chinaz.com/thumb/2023/1025/23102511363968824529.jpgpic.chinaz.com/thumb/2023/1025/2310... https://pic.chinaz.com/thumb/2023/1025/23102511363968824529.jpg — 200 — 25.7 KiB — 94 ms — h2https://img.chinaz.com/2020/js/jsLibrary.min.js?20230118img.chinaz.com/2020/js/jsLibrary.mi... https://img.chinaz.com/2020/js/jsLibrary.min.js?20230118 — 200 — 61.0 KiB — 219 ms — h2https://img.chinaz.com/2020/js/index.min.js?20240617img.chinaz.com/2020/js/index.min.js... https://img.chinaz.com/2020/js/index.min.js?20240617 — 200 — 5.8 KiB — 85 ms — h2https://img.chinaz.com/2020/js/uc1.js?20210906img.chinaz.com/2020/js/uc1.js?20210... https://img.chinaz.com/2020/js/uc1.js?20210906 — 200 — 2.7 KiB — 110 ms — h2https://img.chinaz.com/2020/js/stat.min.js?20230408img.chinaz.com/2020/js/stat.min.js?... https://img.chinaz.com/2020/js/stat.min.js?20230408 — 200 — 1.7 KiB — 93 ms — h2https://pic.chinaz.com/thumb/2023/1025/23102511374488096473.jpgpic.chinaz.com/thumb/2023/1025/2310... https://pic.chinaz.com/thumb/2023/1025/23102511374488096473.jpg — 200 — 22.4 KiB — 92 ms — h2https://pic.chinaz.com/thumb/2023/0605/23060504191368305107.jpgpic.chinaz.com/thumb/2023/0605/2306... https://pic.chinaz.com/thumb/2023/0605/23060504191368305107.jpg — 200 — 19.3 KiB — 96 ms — h2https://img.chinaz.com/images/1551.jpgimg.chinaz.com/images/1551.jpg https://img.chinaz.com/images/1551.jpg — 200 — 24.2 KiB — 89 ms — h2https://img.chinaz.com/ghs.pngimg.chinaz.com/ghs.png https://img.chinaz.com/ghs.png — 200 — 5.8 KiB — 85 ms — h2https://jiathis.com/chinaz.jsjiathis.com/chinaz.js https://jiathis.com/chinaz.js — 200 — 1.8 KiB — 576 ms — h3https://a2put.chinaz.com/slot/callback?id=s1701533037465807&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=s... https://a2put.chinaz.com/slot/callback?id=s1701533037465807&fromUrl=https://www.chinaz.com/ — 200 — 956 B — 341 ms — h2https://a2put.chinaz.com/slot/callback?id=1338803151209238530&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1338803151209238530&fromUrl=https://www.chinaz.com/ — 200 — 1.6 KiB — 380 ms — h2data:application/x-font-woff2;charset=utf-8;base64,d09GMgABAAAAAEqQAAsAAAAAhPQAAEo/AAEAAAAAAAAAAAAA…data:application/x-font-woff2;chars... data:application/x-font-woff2;charset=utf-8;base64,d09GMgABAAAAAEqQAAsAAAAAhPQAAEo/AAEAAAAAAAAAAAAA… — 200 — 18.6 KiB — 21 ms — datahttps://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.woff2?t=1666080683524at.alicdn.com/t/c/font_1052300_kp81... https://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.woff2?t=1666080683524 — 200 — 27.9 KiB — 11 ms — h2https://a2put.chinaz.com/slot/callback?id=1339131592303448066&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339131592303448066&fromUrl=https://www.chinaz.com/ — 200 — 955 B — 389 ms — h2https://a2put.chinaz.com/slot/callback?id=1339131673492590593&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339131673492590593&fromUrl=https://www.chinaz.com/ — 200 — 612 B — 1.6 s — h2https://a2put.chinaz.com/slot/callback?id=1339403908958654466&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339403908958654466&fromUrl=https://www.chinaz.com/ — 200 — 1.6 KiB — 405 ms — h2https://a2put.chinaz.com/slot/callback?id=1339403997110341633&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339403997110341633&fromUrl=https://www.chinaz.com/ — 200 — 1.5 KiB — 395 ms — h2https://a2put.chinaz.com/slot/callback?id=1339404081113862145&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339404081113862145&fromUrl=https://www.chinaz.com/ — 200 — 1.6 KiB — 1.6 s — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.9 s LCP 2.9 shttps://chinaz.com// https://chinaz.com/ — 301 — 78 B — 690 ms — h2https://www.chinaz.com/www.chinaz.com/ https://www.chinaz.com/ — 200 — 37.4 KiB — 243 ms — h2https://img.chinaz.com/2020/css/home.min.css?2023041212img.chinaz.com/2020/css/home.min.cs... https://img.chinaz.com/2020/css/home.min.css?2023041212 — 200 — 46.2 KiB — 152 ms — h2https://img.chinaz.com/2020/js/ads.min.jsimg.chinaz.com/2020/js/ads.min.js https://img.chinaz.com/2020/js/ads.min.js — 200 — 388 B — 162 ms — h2https://cbjs.baidu.com/js/m.jscbjs.baidu.com/js/m.js https://cbjs.baidu.com/js/m.js — 200 — 38.8 KiB — 1.1 s — h2https://a2put.chinaz.com/propagate.jsa2put.chinaz.com/propagate.js https://a2put.chinaz.com/propagate.js — 200 — 6.7 KiB — 913 ms — h2https://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.cssat.alicdn.com/t/c/font_1052300_kp81... https://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.css — 200 — 1.9 KiB — 383 ms — h2https://img.chinaz.com/2020/img/comqrcode.jpgimg.chinaz.com/2020/img/comqrcode.j... https://img.chinaz.com/2020/img/comqrcode.jpg — 200 — 17.7 KiB — 156 ms — h2https://img.chinaz.com/2020/img/chinaz-logo.pngimg.chinaz.com/2020/img/chinaz-logo... https://img.chinaz.com/2020/img/chinaz-logo.png — 200 — 13.4 KiB — 160 ms — h2https://pic.chinaz.com/2026/0421/26042103260422683955.jpgpic.chinaz.com/2026/0421/2604210326... https://pic.chinaz.com/2026/0421/26042103260422683955.jpg — 200 — 147.1 KiB — 663 ms — h2https://pic.chinaz.com/thumb/2023/1025/23102511354261768221.jpgpic.chinaz.com/thumb/2023/1025/2310... https://pic.chinaz.com/thumb/2023/1025/23102511354261768221.jpg — 200 — 17.3 KiB — 84 ms — h2https://pic.chinaz.com/thumb/2023/1025/23102511363968824529.jpgpic.chinaz.com/thumb/2023/1025/2310... https://pic.chinaz.com/thumb/2023/1025/23102511363968824529.jpg — 200 — 25.7 KiB — 94 ms — h2https://img.chinaz.com/2020/js/jsLibrary.min.js?20230118img.chinaz.com/2020/js/jsLibrary.mi... https://img.chinaz.com/2020/js/jsLibrary.min.js?20230118 — 200 — 61.0 KiB — 219 ms — h2https://img.chinaz.com/2020/js/index.min.js?20240617img.chinaz.com/2020/js/index.min.js... https://img.chinaz.com/2020/js/index.min.js?20240617 — 200 — 5.8 KiB — 85 ms — h2https://img.chinaz.com/2020/js/uc1.js?20210906img.chinaz.com/2020/js/uc1.js?20210... https://img.chinaz.com/2020/js/uc1.js?20210906 — 200 — 2.7 KiB — 110 ms — h2https://img.chinaz.com/2020/js/stat.min.js?20230408img.chinaz.com/2020/js/stat.min.js?... https://img.chinaz.com/2020/js/stat.min.js?20230408 — 200 — 1.7 KiB — 93 ms — h2https://pic.chinaz.com/thumb/2023/1025/23102511374488096473.jpgpic.chinaz.com/thumb/2023/1025/2310... https://pic.chinaz.com/thumb/2023/1025/23102511374488096473.jpg — 200 — 22.4 KiB — 92 ms — h2https://pic.chinaz.com/thumb/2023/0605/23060504191368305107.jpgpic.chinaz.com/thumb/2023/0605/2306... https://pic.chinaz.com/thumb/2023/0605/23060504191368305107.jpg — 200 — 19.3 KiB — 96 ms — h2https://img.chinaz.com/images/1551.jpgimg.chinaz.com/images/1551.jpg https://img.chinaz.com/images/1551.jpg — 200 — 24.2 KiB — 89 ms — h2https://img.chinaz.com/ghs.pngimg.chinaz.com/ghs.png https://img.chinaz.com/ghs.png — 200 — 5.8 KiB — 85 ms — h2https://jiathis.com/chinaz.jsjiathis.com/chinaz.js https://jiathis.com/chinaz.js — 200 — 1.8 KiB — 576 ms — h3https://a2put.chinaz.com/slot/callback?id=s1701533037465807&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=s... https://a2put.chinaz.com/slot/callback?id=s1701533037465807&fromUrl=https://www.chinaz.com/ — 200 — 956 B — 341 ms — h2https://a2put.chinaz.com/slot/callback?id=1338803151209238530&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1338803151209238530&fromUrl=https://www.chinaz.com/ — 200 — 1.6 KiB — 380 ms — h2data:application/x-font-woff2;charset=utf-8;base64,d09GMgABAAAAAEqQAAsAAAAAhPQAAEo/AAEAAAAAAAAAAAAA…data:application/x-font-woff2;chars... data:application/x-font-woff2;charset=utf-8;base64,d09GMgABAAAAAEqQAAsAAAAAhPQAAEo/AAEAAAAAAAAAAAAA… — 200 — 18.6 KiB — 21 ms — datahttps://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.woff2?t=1666080683524at.alicdn.com/t/c/font_1052300_kp81... https://at.alicdn.com/t/c/font_1052300_kp811a2o6qb.woff2?t=1666080683524 — 200 — 27.9 KiB — 11 ms — h2https://a2put.chinaz.com/slot/callback?id=1339131592303448066&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339131592303448066&fromUrl=https://www.chinaz.com/ — 200 — 955 B — 389 ms — h2https://a2put.chinaz.com/slot/callback?id=1339131673492590593&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339131673492590593&fromUrl=https://www.chinaz.com/ — 200 — 612 B — 1.6 s — h2https://a2put.chinaz.com/slot/callback?id=1339403908958654466&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339403908958654466&fromUrl=https://www.chinaz.com/ — 200 — 1.6 KiB — 405 ms — h2https://a2put.chinaz.com/slot/callback?id=1339403997110341633&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339403997110341633&fromUrl=https://www.chinaz.com/ — 200 — 1.5 KiB — 395 ms — h2https://a2put.chinaz.com/slot/callback?id=1339404081113862145&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339404081113862145&fromUrl=https://www.chinaz.com/ — 200 — 1.6 KiB — 1.6 s — h2https://a2put.chinaz.com/slot/callback?id=1339404236852563969&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339404236852563969&fromUrl=https://www.chinaz.com/ — 200 — 1.6 KiB — 392 ms — h2https://a2put.chinaz.com/slot/callback?id=1339131750508400642&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339131750508400642&fromUrl=https://www.chinaz.com/ — 200 — 612 B — 380 ms — h2https://a2put.chinaz.com/slot/callback?id=1339131815201345538&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339131815201345538&fromUrl=https://www.chinaz.com/ — 200 — 613 B — 410 ms — h2https://a2put.chinaz.com/slot/callback?id=s1749067503659663&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=s... https://a2put.chinaz.com/slot/callback?id=s1749067503659663&fromUrl=https://www.chinaz.com/ — 200 — 951 B — 439 ms — h2https://a2put.chinaz.com/slot/callback?id=1339134219548364802&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1339134219548364802&fromUrl=https://www.chinaz.com/ — 200 — 612 B — 465 ms — h2https://a2put.chinaz.com/slot/callback?id=1338810678923759617&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1338810678923759617&fromUrl=https://www.chinaz.com/ — 200 — 948 B — 1.5 s — h2https://pic.chinaz.com/picmap/thumb/202011091027596208_5.jpgpic.chinaz.com/picmap/thumb/2020110... https://pic.chinaz.com/picmap/thumb/202011091027596208_5.jpg — 200 — 13.8 KiB — 547 ms — h2https://pic.chinaz.com/thumb/2026/0407/2026040711124085030.jpgpic.chinaz.com/thumb/2026/0407/2026... https://pic.chinaz.com/thumb/2026/0407/2026040711124085030.jpg — 200 — 22.9 KiB — 561 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAFpOLgnAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJb…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAYAAAFpOLgnAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJb… — 200 — 0 B — 0 ms — datahttps://pic.chinaz.com/picmap/thumb/202105221938377975_3.jpgpic.chinaz.com/picmap/thumb/2021052... https://pic.chinaz.com/picmap/thumb/202105221938377975_3.jpg — 200 — 49.3 KiB — 118 ms — h2https://pic.chinaz.com/thumb/2026/0420/2026042016433431670.jpgpic.chinaz.com/thumb/2026/0420/2026... https://pic.chinaz.com/thumb/2026/0420/2026042016433431670.jpg — 200 — 25.1 KiB — 577 ms — h2https://pic.chinaz.com/thumb/2026/0421/2026042111135897390.jpgpic.chinaz.com/thumb/2026/0421/2026... https://pic.chinaz.com/thumb/2026/0421/2026042111135897390.jpg — 200 — 17.7 KiB — 1.1 s — h2https://pic.chinaz.com/picmap/thumb/202010301749565119_0.jpgpic.chinaz.com/picmap/thumb/2020103... https://pic.chinaz.com/picmap/thumb/202010301749565119_0.jpg — 200 — 18.7 KiB — 801 ms — h2https://pic.chinaz.com/thumb/2026/0421/2026042109000633221.jpgpic.chinaz.com/thumb/2026/0421/2026... https://pic.chinaz.com/thumb/2026/0421/2026042109000633221.jpg — 200 — 8.5 KiB — 997 ms — h2https://pic.chinaz.com/thumb/2026/0415/2026041515275634750.jpgpic.chinaz.com/thumb/2026/0415/2026... https://pic.chinaz.com/thumb/2026/0415/2026041515275634750.jpg — 200 — 17.2 KiB — 129 ms — h2https://pic.chinaz.com/picmap/thumb/202604151626116075_5.jpgpic.chinaz.com/picmap/thumb/2026041... https://pic.chinaz.com/picmap/thumb/202604151626116075_5.jpg — 200 — 32.6 KiB — 125 ms — h2https://a2put.chinaz.com/slot/callback?id=1338810753016139777&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1338810753016139777&fromUrl=https://www.chinaz.com/ — 200 — 957 B — 471 ms — h2https://a2put.chinaz.com/slot/callback?id=1338810826319990786&fromUrl=https://www.chinaz.com/a2put.chinaz.com/slot/callback?id=1... https://a2put.chinaz.com/slot/callback?id=1338810826319990786&fromUrl=https://www.chinaz.com/ — 200 — 958 B — 1.4 s — 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873 ms — h2https://a2put.chinaz.com/uploads/20240620/74b206003936400dca62e0d10f736c47.jpga2put.chinaz.com/uploads/20240620/7... https://a2put.chinaz.com/uploads/20240620/74b206003936400dca62e0d10f736c47.jpg — 200 — 27.9 KiB — 864 ms — h2https://a2put.chinaz.com/uploads/20240126/0f93b6483cf5bb2da72afda77e21ffd8.gifa2put.chinaz.com/uploads/20240126/0... https://a2put.chinaz.com/uploads/20240126/0f93b6483cf5bb2da72afda77e21ffd8.gif — 200 — 22.6 KiB — 863 ms — h2https://a2put.chinaz.com/uploads/20250909/a5aabb367dc6b6b6374ba92c7a5fd50b.jpga2put.chinaz.com/uploads/20250909/a... https://a2put.chinaz.com/uploads/20250909/a5aabb367dc6b6b6374ba92c7a5fd50b.jpg — 200 — 102.6 KiB — 915 ms — h2https://a2put.chinaz.com/images/icons.pnga2put.chinaz.com/images/icons.png https://a2put.chinaz.com/images/icons.png — 200 — 2.7 KiB — 841 ms — h2https://a2put.chinaz.com/uploads/20231025/ae3c1f9adc6e45657192d1598d74fcaa.gifa2put.chinaz.com/uploads/20231025/a... 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http/1.1https://hm.baidu.com/hm.gif?hca=DE80021A0AA92414&cc=1&ck=1&cl=24-bit&ds=800x600&vl=940&et=0&ja=0&ln=en-us&lo=0&rnd=72604690&si=aecc9715b0f5d5f7f34fba48a3c511d6&v=1.3.2&lv=1&sn=19213&r=0&ww=1350&u=https%3A%2F%2Fwww.chinaz.com%2F&tt=%E7%AB%99%E9%95%BF%E4%B9%8B%E5%AE%B6%20-%20%E7%AB%99%E9%95%BF%E8%B5%84%E8%AE%AF-%E6%88%91%E4%BB%AC%E8%87%B4%E5%8A%9B%E4%BA%8E%E4%B8%BA%E4%B8%AD%E6%96%87%E7%BD%91%E7%AB%99%E6%8F%90%E4%BE%9B%E5%8A%A8%E5%8A%9B%EF%BC%81hm.baidu.com/hm.gif?hca=DE80021A0AA... https://hm.baidu.com/hm.gif?hca=DE80021A0AA92414&cc=1&ck=1&cl=24-bit&ds=800x600&vl=940&et=0&ja=0&ln=en-us&lo=0&rnd=72604690&si=aecc9715b0f5d5f7f34fba48a3c511d6&v=1.3.2&lv=1&sn=19213&r=0&ww=1350&u=https%3A%2F%2Fwww.chinaz.com%2F&tt=%E7%AB%99%E9%95%BF%E4%B9%8B%E5%AE%B6%20-%20%E7%AB%99%E9%95%BF%E8%B5%84%E8%AE%AF-%E6%88%91%E4%BB%AC%E8%87%B4%E5%8A%9B%E4%BA%8E%E4%B8%BA%E4%B8%AD%E6%96%87%E7%BD%91%E7%AB%99%E6%8F%90%E4%BE%9B%E5%8A%A8%E5%8A%9B%EF%BC%81 — 200 — 636 B — 277 ms — http/1.1https://hm.baidu.com/hm.gif?hca=DE80021A0AA92414&cc=1&ck=1&cl=24-bit&ds=800x600&vl=940&et=0&ja=0&ln=en-us&lo=0&rnd=1652009322&si=7d86eb847ecfd3c972fa457a6abaa0da&v=1.3.2&lv=1&sn=19213&r=0&ww=1350&u=https%3A%2F%2Fwww.chinaz.com%2F&tt=%E7%AB%99%E9%95%BF%E4%B9%8B%E5%AE%B6%20-%20%E7%AB%99%E9%95%BF%E8%B5%84%E8%AE%AF-%E6%88%91%E4%BB%AC%E8%87%B4%E5%8A%9B%E4%BA%8E%E4%B8%BA%E4%B8%AD%E6%96%87%E7%BD%91%E7%AB%99%E6%8F%90%E4%BE%9B%E5%8A%A8%E5%8A%9B%EF%BC%81hm.baidu.com/hm.gif?hca=DE80021A0AA... https://hm.baidu.com/hm.gif?hca=DE80021A0AA92414&cc=1&ck=1&cl=24-bit&ds=800x600&vl=940&et=0&ja=0&ln=en-us&lo=0&rnd=1652009322&si=7d86eb847ecfd3c972fa457a6abaa0da&v=1.3.2&lv=1&sn=19213&r=0&ww=1350&u=https%3A%2F%2Fwww.chinaz.com%2F&tt=%E7%AB%99%E9%95%BF%E4%B9%8B%E5%AE%B6%20-%20%E7%AB%99%E9%95%BF%E8%B5%84%E8%AE%AF-%E6%88%91%E4%BB%AC%E8%87%B4%E5%8A%9B%E4%BA%8E%E4%B8%BA%E4%B8%AD%E6%96%87%E7%BD%91%E7%AB%99%E6%8F%90%E4%BE%9B%E5%8A%A8%E5%8A%9B%EF%BC%81 — 200 — 636 B — 273 ms — http/1.1https://a2put.chinaz.com/uploads/20260410/93ad91d34d3bf1feb4aa4e63dd1f8cf3.gifa2put.chinaz.com/uploads/20260410/9... https://a2put.chinaz.com/uploads/20260410/93ad91d34d3bf1feb4aa4e63dd1f8cf3.gif — 200 — 15.2 KiB — 297 ms — h2https://a2put.chinaz.com/uploads/20241227/1831c4721bb8fa119b5d7a3d23ff30f0.gifa2put.chinaz.com/uploads/20241227/1... https://a2put.chinaz.com/uploads/20241227/1831c4721bb8fa119b5d7a3d23ff30f0.gif — 200 — 43.4 KiB — 282 ms — h2https://img.chinaz.com/2020/img/favicon.icoimg.chinaz.com/2020/img/favicon.ico https://img.chinaz.com/2020/img/favicon.ico — 200 — 1.7 KiB — 113 ms — h2https://k.clarity.ms/collectk.clarity.ms/collect https://k.clarity.ms/collect — 204 — 278 B — 100 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 947ms · 130KB · ¥47/mo
www.chinaz.com
Other
Costly
Execution 422ms
Transfer 37 KB
Monthly Cost ¥21/mo
img.chinaz.com
Other
Optional
Execution 192ms
Transfer 61 KB
Unused 51%
Monthly Cost ¥9/mo
a2put.chinaz.com
Other
Optional
Execution 134ms
Transfer 7 KB
Monthly Cost ¥7/mo
Unattributable
Other
Optional
Execution 132ms
Transfer 0 KB
Monthly Cost ¥6/mo
Microsoft Clarity
Session Replay
Optional
Execution 68ms
Transfer 25 KB
Monthly Cost ¥3/mo

These scripts may cost more than they're worth

  • www.chinaz.com adds 422ms and costs ~¥21/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.chinaz.com takes 422ms 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

51% of img.chinaz.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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