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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
6
REVIEW
2
PASS
5
INFO
2

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

Mobile Desktop
43
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
83
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.
75
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.

6.50 s

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

7.31 s

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

295 ms

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

0.012

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

6.50 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

7.53 s

Page Load Progression

1.2 s
2.4 s
3.7 s
4.9 s
6.1 s
7.3 s
8.5 s
9.7 s
Checks
15
5 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
4.8 MB transferred, 87 requests
FIX
4.8 MB transferred, 87 requests
Critical::
Page weighs 11.2 MB (4.8 MB transferred)
Warning::
JavaScript is 2.0 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 2.0 MB
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::
CSS is 240 KB — consider purging unused styles
Remove unused CSS rules with tools like PurgeCSS to reduce stylesheet size.
Got: 240 KB
Info::
87 HTTP requests
Info::
Estimated 1.0 g CO2 per page load
4.8 MB / 2.4 MB budget
4.8 MB transferred
87 requests
1.0 g CO2 per page load
JavaScript 2.0 MiB 41%
Images 1.3 MiB 26%
Other 1.2 MiB 25%
CSS 240.1 KiB 5%
Fonts 77.3 KiB 2%
Other 45.8 KiB 1%
Other 18.6 KiB 0%
HTML 4.4 KiB 0%
Other 392 B 0%
0 2.4 MB 4.9 MB
Over budget

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

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

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 (4.8 MiB of 4.8 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2760ms total JS execution
FIX
2760ms total JS execution
Warning::
https://h5.sinaimg.cn/m/weibo-pro-next/assets/inde...: 1325ms CPU time
Warning::
https://weibo.com/newlogin?url=https%3A%2F%2Fweibo...: 810ms CPU time
Warning::
Unattributable: 568ms CPU time
Info::
https://passport.weibo.com/js/visitor/mini_origina...: 57ms CPU time
Warning::
Third-party scripts: 2760ms (100% of total)

Main Thread Breakdown

Other 37% Script Evaluation 35% Style & Layout 16% Rendering 7%
ScriptTotalScriptingParse/CompileParty
https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-aFYRJ6nf.js1325ms910ms10ms3rd
https://weibo.com/newlogin?url=https%3A%2F%2Fweibo.com%2F810ms6ms1ms3rd
Unattributable568ms17ms0ms3rd
https://passport.weibo.com/js/visitor/mini_original.js?v=2016111657ms47ms5ms3rd
F
JS Bundles
Action
11 scripts, 1.4 MB unused
FIX
11 scripts, 1.4 MB unused
Warning::
https://h5.sinaimg.cn/m/weibo-pro-next/assets/inde...: 1.3 MB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://h5.sinaimg.cn/m/reward-pc-kits/sdk.js?vers...: 53 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 1.4 MB
1393 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-aFYRJ6nf.js1888 KB1340 KB (71%)✓3rd
https://h5.sinaimg.cn/m/reward-pc-kits/sdk.js?version=2.1.566 KB53 KB (81%)✓3rd
https://passport.weibo.com/js/visitor/mini_original.js?v=2016111616 KB—✓3rd
https://passport.sinaimg.cn/js/fp/1.2.1.umd.js13 KB—✓3rd
https://passport.weibo.com/visitor/genvisitor22 KB—✓3rd
https://js.t.sinajs.cn/static/validate-loader.umd.cjs3 KB—✓3rd
https://cstaticdun.126.net/load.min.js15 KB—✓3rd
https://i.sso.sina.com.cn/js/qrcode_login_v2.js5 KB—✓3rd
https://static.geetest.com/v4/gt4.js5 KB—✓3rd
https://a.sinaimg.cn/mintra/pic/2201111119/wza/aria.js?appid=dc65fe7d7d2aaf372b1ac9945ffbd09314 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

F
Page Weight Inventory
Action
87 resources · 4.8 MB · 1.4 MB savings available
FIX
87 resources · 4.8 MB · 1.4 MB savings available
Warning::
Page weight 3.8 MB over 1MB target
Got: 4.8 MB Expected: ≤ 1 MB
Info::
~1.4 MB of savings available
Warning::
86 third-party resources (100% of weight)
Info::
4 resources over 200KB
87 resources · 4.8 MiB · 86 third-party 3.8 MiB over 1MB target
JavaScript 41% · 2.0 MiB
Image 27% · 1.3 MiB
Media 25% · 1.2 MiB
CSS 5% · 240.1 KiB
Font 2% · 77.3 KiB
Other 1% · 44.6 KiB
Document 0% · 7.1 KiB

~1.4 MiB of savings available

Remove unused JavaScript: 1.4 MiB
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
Image Optimization
Action
39 images, 0 KB saveable
REVIEW
39 images, 0 KB saveable
Warning::
https://simg.s.weibo.com/imgtool/20230831_20230830... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://simg.s.weibo.com/moter/flags/2_0.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://wx3.sinaimg.cn/orj480/001R0E0aly1icdk2v6yy... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://wx2.sinaimg.cn/orj480/e8715032ly1ic9ubebod... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://a.sinaimg.cn/mintra/pic/2201190827/32aria.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://simg.s.weibo.com/imgtool/20241104_20241104... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://wx3.sinaimg.cn/orj480/006K3Bq7ly1icb8u1kvf... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://d.sinaimg.cn/prd/106/1683/2026/02/28/feed_... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
39 images 1.3 MB
0 oversized -0 KB
38 legacy format
8 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

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
5 fonts (77 KB)
PASS
5 fonts (77 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

77 KB total

Render-blocking

0

of 5

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s FCP 6.5 s LCP 7.3 sdata:application/font-woff;base64,d09GRgABAAAAAIWMAAsAAAAA2kAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…font-woff;base64,d09GRg... data:application/font-woff;base64,d09GRgABAAAAAIWMAAsAAAAA2kAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 33.4 KiB — 127 ms — font-display: swapdata:application/font-woff;base64,d09GRgABAAAAAGRIAAsAAAAApAwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…font-woff;base64,d09GRg... data:application/font-woff;base64,d09GRgABAAAAAGRIAAsAAAAApAwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 25.1 KiB — 121 ms — font-display: swapdata:application/font-woff;base64,d09GRgABAAAAAC9UAAsAAAAAUBwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…font-woff;base64,d09GRg... data:application/font-woff;base64,d09GRgABAAAAAC9UAAsAAAAAUBwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 11.8 KiB — 121 ms — font-display: swapdata:application/font-woff;base64,d09GRgABAAAAAAhAAAoAAAAAB/gAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABPUy8yA…gAAQAAAAAAAAAAAAAAAAAAA... data:application/font-woff;base64,d09GRgABAAAAAAhAAAoAAAAAB/gAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABPUy8yA… — 2.1 KiB — 44 ms — font-display: swapdata:font/woff;charset=utf-8;base64,d09GRgABAAAAABPwAA0AAAAAHWQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABGRlR…woff;charset=utf-8;base... data:font/woff;charset=utf-8;base64,d09GRgABAAAAABPwAA0AAAAAHWQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABGRlR… — 5.0 KiB — 34 ms — font-display: swap
font-woff;base64,d09GRg... woff swap
Size 33 KB
Load time 127 ms
Start 9.9 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
font-woff;base64,d09GRg... woff swap
Size 25 KB
Load time 121 ms
Start 9.9 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
font-woff;base64,d09GRg... woff swap
Size 12 KB
Load time 121 ms
Start 9.9 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
gAAQAAAAAAAAAAAAAAAAAAA... woff swap
Size 2 KB
Load time 44 ms
Start 10.8 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
woff;charset=utf-8;base... woff swap
Size 5 KB
Load time 34 ms
Start 11.7 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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)

Fixing the unchecked items could save ~23 KB and ~46 ms

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
87 requests over 13649ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s FCP 6.5 s LCP 7.3 shttps://t.cn// https://t.cn/ — 301 — 142 B — 819 ms — h2http://weibo.com/weibo.com/ http://weibo.com/ — 307 — 0 B — 3 ms — http/1.1https://weibo.com/weibo.com/ https://weibo.com/ — 302 — 557 B — 1.5 s — h2https://passport.weibo.com/visitor/visitor?entry=miniblog&a=enter&url=https%3A%2F%2Fweibo.com%2F&domain=weibo.com&ua=Mozilla%2F5.0%20%28Macintosh%3B%20Intel%20Mac%20OS%20X%2010_15_7%29%20AppleWebKit%2F537.36%20%28KHTML%2C%20like%20Gecko%29%20Chrome%2F146.0.0.0%20Safari%2F537.36&_rand=1776891644086&sudaref=passport.weibo.com/visitor/visitor?... https://passport.weibo.com/visitor/visitor?entry=miniblog&a=enter&url=https%3A%2F%2Fweibo.com%2F&domain=weibo.com&ua=Mozilla%2F5.0%20%28Macintosh%3B%20Intel%20Mac%20OS%20X%2010_15_7%29%20AppleWebKit%2F537.36%20%28KHTML%2C%20like%20Gecko%29%20Chrome%2F146.0.0.0%20Safari%2F537.36&_rand=1776891644086&sudaref= — 307 — 0 B — 1.5 s — http/1.1http://weibo.com/weibo.com/ http://weibo.com/ — 301 — 260 B — 662 ms — http/1.1https://weibo.com/weibo.com/ https://weibo.com/ — 302 — 508 B — 285 ms — h2https://passport.weibo.com/visitor/visitor?entry=miniblog&a=enter&url=https%3A%2F%2Fweibo.com%2F&domain=weibo.com&ua=Mozilla%2F5.0%20%28Macintosh%3B%20Intel%20Mac%20OS%20X%2010_15_7%29%20AppleWebKit%2F537.36%20%28KHTML%2C%20like%20Gecko%29%20Chrome%2F146.0.0.0%20Safari%2F537.36&_rand=1776891646550&sudaref=passport.weibo.com/visitor/visitor?... https://passport.weibo.com/visitor/visitor?entry=miniblog&a=enter&url=https%3A%2F%2Fweibo.com%2F&domain=weibo.com&ua=Mozilla%2F5.0%20%28Macintosh%3B%20Intel%20Mac%20OS%20X%2010_15_7%29%20AppleWebKit%2F537.36%20%28KHTML%2C%20like%20Gecko%29%20Chrome%2F146.0.0.0%20Safari%2F537.36&_rand=1776891646550&sudaref= — 200 — 2.8 KiB — 281 ms — h2https://passport.weibo.com/js/visitor/mini_original.js?v=20161116passport.weibo.com/js/visitor/mini_... https://passport.weibo.com/js/visitor/mini_original.js?v=20161116 — 200 — 15.8 KiB — 344 ms — h2https://passport.sinaimg.cn/js/fp/1.2.1.umd.jspassport.sinaimg.cn/js/fp/1.2.1.umd... https://passport.sinaimg.cn/js/fp/1.2.1.umd.js — 200 — 13.0 KiB — 535 ms — h2https://passport.weibo.com/sso/bdpassport.weibo.com/sso/bd https://passport.weibo.com/sso/bd — 200 — 392 B — 269 ms — h2https://passport.weibo.com/favicon.icopassport.weibo.com/favicon.ico https://passport.weibo.com/favicon.ico — 200 — 5.6 KiB — 293 ms — h2https://passport.weibo.com/visitor/genvisitor2passport.weibo.com/visitor/genvisit... https://passport.weibo.com/visitor/genvisitor2 — 200 — 1.6 KiB — 282 ms — h2https://login.sina.com.cn/visitor/visitor?a=crossdomain&s=_2AkMetbnIf8NxqwFRm_sdymrna4xwzgrEieKo6UgTJRMxHRl-yT9kqm1btRB6NTWXJwXj0gwcINGnk25Xn0KMGfnostdz&sp=0033WrSXqPxfM72-Ws9jqgMF55529P9D9WFw45ueyY5XRPvaqvQLJPzI&from=weibo&_rand=0.9861995775884834&entry=miniblog&url=https%3A%2F%2Fweibo.com%2Flogin.sina.com.cn/visitor/visitor?a... https://login.sina.com.cn/visitor/visitor?a=crossdomain&s=_2AkMetbnIf8NxqwFRm_sdymrna4xwzgrEieKo6UgTJRMxHRl-yT9kqm1btRB6NTWXJwXj0gwcINGnk25Xn0KMGfnostdz&sp=0033WrSXqPxfM72-Ws9jqgMF55529P9D9WFw45ueyY5XRPvaqvQLJPzI&from=weibo&_rand=0.9861995775884834&entry=miniblog&url=https%3A%2F%2Fweibo.com%2F — 302 — 792 B — 864 ms — h2https://weibo.com/weibo.com/ https://weibo.com/ — 302 — 583 B — 320 ms — h2https://weibo.com/newlogin?url=https%3A%2F%2Fweibo.com%2Fweibo.com/newlogin?url=https%3A%2F%... https://weibo.com/newlogin?url=https%3A%2F%2Fweibo.com%2F — 200 — 1.6 KiB — 293 ms — h2https://h5.sinaimg.cn/m/reward-pc-kits/style.css?version=2.1.5h5.sinaimg.cn/m/reward-pc-kits/styl... https://h5.sinaimg.cn/m/reward-pc-kits/style.css?version=2.1.5 — 200 — 19.4 KiB — 886 ms — h2https://js.t.sinajs.cn/static/validate-loader.umd.cjsjs.t.sinajs.cn/static/validate-load... https://js.t.sinajs.cn/static/validate-loader.umd.cjs — 200 — 2.6 KiB — 1.0 s — h2https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-aFYRJ6nf.jsh5.sinaimg.cn/m/weibo-pro-next/asse... https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-aFYRJ6nf.js — 200 — 1.8 MiB — 232 ms — h2https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-0ZNk6X-s.cssh5.sinaimg.cn/m/weibo-pro-next/asse... https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-0ZNk6X-s.css — 200 — 220.7 KiB — 31 ms — h2https://cstaticdun.126.net/load.min.jscstaticdun.126.net/load.min.js https://cstaticdun.126.net/load.min.js — 200 — 15.0 KiB — 227 ms — http/1.1https://i.sso.sina.com.cn/js/qrcode_login_v2.jsi.sso.sina.com.cn/js/qrcode_login_v... https://i.sso.sina.com.cn/js/qrcode_login_v2.js — 200 — 4.8 KiB — 810 ms — h2https://static.geetest.com/v4/gt4.jsstatic.geetest.com/v4/gt4.js https://static.geetest.com/v4/gt4.js — 200 — 4.7 KiB — 67 ms — h2https://a.sinaimg.cn/mintra/pic/2201111119/wza/aria.js?appid=dc65fe7d7d2aaf372b1ac9945ffbd093a.sinaimg.cn/mintra/pic/2201111119/... 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6.4 KiB — 322 ms — h2https://a.sinaimg.cn/mintra/pic/2112130400/18weibo_login.pnga.sinaimg.cn/mintra/pic/2112130400/... https://a.sinaimg.cn/mintra/pic/2112130400/18weibo_login.png — 200 — 517.2 KiB — 132 ms — h2data:application/font-woff;base64,d09GRgABAAAAAIWMAAsAAAAA2kAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…data:application/font-woff;base64,d... data:application/font-woff;base64,d09GRgABAAAAAIWMAAsAAAAA2kAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 200 — 33.4 KiB — 127 ms — data
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h2https://h5.sinaimg.cn/upload/108/1866/2022/11/02/svip_9.pngh5.sinaimg.cn/upload/108/1866/2022/... https://h5.sinaimg.cn/upload/108/1866/2022/11/02/svip_9.png — 200 — 5.3 KiB — 25 ms — h2https://wx2.sinaimg.cn/orj360/006jfIhWly1iceiv6z4usj323736t1kx.jpgwx2.sinaimg.cn/orj360/006jfIhWly1ic... https://wx2.sinaimg.cn/orj360/006jfIhWly1iceiv6z4usj323736t1kx.jpg — 200 — 11.8 KiB — 1.1 s — h2https://wx4.sinaimg.cn/orj360/006jfIhWly1iceiv4fxhvj323r35x1kx.jpgwx4.sinaimg.cn/orj360/006jfIhWly1ic... https://wx4.sinaimg.cn/orj360/006jfIhWly1iceiv4fxhvj323r35x1kx.jpg — 200 — 11.3 KiB — 968 ms — h2https://wx2.sinaimg.cn/orj360/006jfIhWly1iceiv7podxj335s23w7wh.jpgwx2.sinaimg.cn/orj360/006jfIhWly1ic... https://wx2.sinaimg.cn/orj360/006jfIhWly1iceiv7podxj335s23w7wh.jpg — 200 — 8.7 KiB — 1.2 s — h2https://wx3.sinaimg.cn/orj360/006jfIhWly1iceiv3plb9j335s23wb29.jpgwx3.sinaimg.cn/orj360/006jfIhWly1ic... https://wx3.sinaimg.cn/orj360/006jfIhWly1iceiv3plb9j335s23wb29.jpg — 200 — 11.2 KiB — 793 ms — h2https://wx2.sinaimg.cn/orj360/006jfIhWly1iceiv5elhqj323w35snpd.jpgwx2.sinaimg.cn/orj360/006jfIhWly1ic... https://wx2.sinaimg.cn/orj360/006jfIhWly1iceiv5elhqj323w35snpd.jpg — 200 — 13.8 KiB — 1.1 s — h2https://wx3.sinaimg.cn/orj360/006jfIhWly1iceiv6as9jj335s23we81.jpgwx3.sinaimg.cn/orj360/006jfIhWly1ic... https://wx3.sinaimg.cn/orj360/006jfIhWly1iceiv6as9jj335s23we81.jpg — 200 — 6.7 KiB — 796 ms — h2https://wx4.sinaimg.cn/orj360/006jfIhWly1iceiv2luk8j323w35shdt.jpgwx4.sinaimg.cn/orj360/006jfIhWly1ic... https://wx4.sinaimg.cn/orj360/006jfIhWly1iceiv2luk8j323w35shdt.jpg — 200 — 14.6 KiB — 955 ms — h2https://wx2.sinaimg.cn/orj360/006jfIhWly1iceiv9b211j323w35sb29.jpgwx2.sinaimg.cn/orj360/006jfIhWly1ic... https://wx2.sinaimg.cn/orj360/006jfIhWly1iceiv9b211j323w35sb29.jpg — 200 — 12.4 KiB — 1.1 s — h2https://wx4.sinaimg.cn/orj360/006jfIhWly1iceiv8i91nj323w35shdt.jpgwx4.sinaimg.cn/orj360/006jfIhWly1ic... https://wx4.sinaimg.cn/orj360/006jfIhWly1iceiv8i91nj323w35shdt.jpg — 200 — 15.6 KiB — 957 ms — h2https://wx2.sinaimg.cn/orj360/639b1bfbgy1icfqml4hw3j20xi0lkgpr.jpgwx2.sinaimg.cn/orj360/639b1bfbgy1ic... https://wx2.sinaimg.cn/orj360/639b1bfbgy1icfqml4hw3j20xi0lkgpr.jpg — 200 — 17.9 KiB — 1.2 s — h2https://wx3.sinaimg.cn/orj360/639b1bfbgy1icfqmksg1oj20xi1ts474.jpgwx3.sinaimg.cn/orj360/639b1bfbgy1ic... https://wx3.sinaimg.cn/orj360/639b1bfbgy1icfqmksg1oj20xi1ts474.jpg — 200 — 32.5 KiB — 798 ms — h2https://tvax4.sinaimg.cn/crop.0.0.512.512.1024/639b1bfbly8h0ikpj331kj20e80e8t8w.jpg?KID=imgbed,tva&Expires=1776902452&ssig=erAopHSvh1tvax4.sinaimg.cn/crop.0.0.512.512.1... https://tvax4.sinaimg.cn/crop.0.0.512.512.1024/639b1bfbly8h0ikpj331kj20e80e8t8w.jpg?KID=imgbed,tva&Expires=1776902452&ssig=erAopHSvh1 — 200 — 17.6 KiB — 1.2 s — h2https://tvax4.sinaimg.cn/crop.0.0.512.512.1024/006jfIhWly8hdl2ohox3tj30e80e83yg.jpg?KID=imgbed,tva&Expires=1776902452&ssig=eOA71TWKW%2Ftvax4.sinaimg.cn/crop.0.0.512.512.1... https://tvax4.sinaimg.cn/crop.0.0.512.512.1024/006jfIhWly8hdl2ohox3tj30e80e83yg.jpg?KID=imgbed,tva&Expires=1776902452&ssig=eOA71TWKW%2F — 200 — 8.9 KiB — 1.2 s — h2https://tvax1.sinaimg.cn/crop.0.0.512.512.1024/006K3Bq7ly8hdl2s7pomej30e80e8t9g.jpg?KID=imgbed,tva&Expires=1776902452&ssig=7dXGONWODktvax1.sinaimg.cn/crop.0.0.512.512.1... https://tvax1.sinaimg.cn/crop.0.0.512.512.1024/006K3Bq7ly8hdl2s7pomej30e80e8t9g.jpg?KID=imgbed,tva&Expires=1776902452&ssig=7dXGONWODk — 200 — 37.6 KiB — 1.1 s — h2https://face.t.sinajs.cn/t4/appstyle/expression/ext/normal/e1/2022_dorashock_mobile.pngface.t.sinajs.cn/t4/appstyle/expres... https://face.t.sinajs.cn/t4/appstyle/expression/ext/normal/e1/2022_dorashock_mobile.png — 200 — 8.4 KiB — 1.2 s — h2https://d.sinaimg.cn/prd/106/1683/2026/02/28/feed_icon_shumiao2x.pngd.sinaimg.cn/prd/106/1683/2026/02/2... https://d.sinaimg.cn/prd/106/1683/2026/02/28/feed_icon_shumiao2x.png — 200 — 5.4 KiB — 926 ms — h2https://wx3.sinaimg.cn/orj480/006K3Bq7ly1icb8u1kvfhj30u0140qco.jpgwx3.sinaimg.cn/orj480/006K3Bq7ly1ic... https://wx3.sinaimg.cn/orj480/006K3Bq7ly1icb8u1kvfhj30u0140qco.jpg — 200 — 38.4 KiB — 803 ms — h2data:font/woff;charset=utf-8;base64,d09GRgABAAAAABPwAA0AAAAAHWQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABGRlR…data:font/woff;charset=utf-8;base64... data:font/woff;charset=utf-8;base64,d09GRgABAAAAABPwAA0AAAAAHWQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABGRlR… — 200 — 5.0 KiB — 34 ms — datahttps://f.video.weibocdn.com/o0/VS4rkASplx08x2A8SPOo01041200AH7o0E010.mp4?label=mp4_720p&template=1280x720.25.0&media_id=5290042357383174&tp=8x8A3El:YTkl0eM8&us=0&ori=1&bf=4&ot=h&lp=00005iDJA&ps=mZ6WB&uid=zO39SP4&ab=,15568-g4,3601-g42,8013-g0&Expires=1776895252&ssig=ijJrVpi3pU&KID=unistore,videof.video.weibocdn.com/o0/VS4rkASplx0... https://f.video.weibocdn.com/o0/VS4rkASplx08x2A8SPOo01041200AH7o0E010.mp4?label=mp4_720p&template=1280x720.25.0&media_id=5290042357383174&tp=8x8A3El:YTkl0eM8&us=0&ori=1&bf=4&ot=h&lp=00005iDJA&ps=mZ6WB&uid=zO39SP4&ab=,15568-g4,3601-g42,8013-g0&Expires=1776895252&ssig=ijJrVpi3pU&KID=unistore,video — 206 — 557 B — 931 ms — h2https://multimedia.api.weibo.com/2/multimedia/user/play_history/report.json?source=339644097&play_type=0&video_orientation=horizontal&video_duration=87&id=5290084950611580&id_type=0&oid=1034%3A5290042357383174&is_contribution=0&reqHost=https%253A%252F%252Fweibo.com%252Fnewlogin%253Ftabtype%253Dweibo%2526gid%253D102803%2526openLoginLayer%253D0%2526url%253Dhttps%253A%252F%252Fweibo.com%252F&seconds=0multimedia.api.weibo.com/2/multimed... https://multimedia.api.weibo.com/2/multimedia/user/play_history/report.json?source=339644097&play_type=0&video_orientation=horizontal&video_duration=87&id=5290084950611580&id_type=0&oid=1034%3A5290042357383174&is_contribution=0&reqHost=https%253A%252F%252Fweibo.com%252Fnewlogin%253Ftabtype%253Dweibo%2526gid%253D102803%2526openLoginLayer%253D0%2526url%253Dhttps%253A%252F%252Fweibo.com%252F&seconds=0 — 401 — 392 B — 1.1 s — h2
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 2760ms · 1906KB · ¥136/mo
h5.sinaimg.cn
Other
Costly
Execution 1325ms
Transfer 1888 KB
Unused 71%
Monthly Cost ¥65/mo
weibo.com
Other
Costly
Execution 810ms
Transfer 2 KB
Monthly Cost ¥40/mo
Unattributable
Other
Costly
Execution 568ms
Transfer 0 KB
Monthly Cost ¥28/mo
passport.weibo.com
Other
Optional
Execution 57ms
Transfer 16 KB
Monthly Cost ¥3/mo

These scripts may cost more than they're worth

  • h5.sinaimg.cn adds 1325ms and costs ~¥65/month
  • weibo.com adds 810ms and costs ~¥40/month
  • Unattributable adds 568ms and costs ~¥28/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

h5.sinaimg.cn takes 1325ms 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

71% of h5.sinaimg.cn'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

weibo.com takes 810ms 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 568ms 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

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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