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https://weibo.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
5
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
51
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
82
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

5.29 s

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

6.07 s

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

190 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.

5.67 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.

6.69 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 3 REVIEW 5 FIX
F
Page Weight Budget
Action
11.5 MB transferred, 90 requests
FIX
11.5 MB transferred, 90 requests
Critical::
Page weighs 17.5 MB (11.5 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 1.8 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.8 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::
90 HTTP requests
Info::
Estimated 2.4 g CO2 per page load
11.5 MB / 2.4 MB budget
11.5 MB transferred
90 requests
2.4 g CO2 per page load
Other 7.4 MiB 64%
JavaScript 2.0 MiB 17%
Images 1.8 MiB 15%
CSS 240.2 KiB 2%
Fonts 72.4 KiB 1%
Other 45.2 KiB 0%
Other 17.7 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 (11.4 MiB of 11.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
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 (72%)
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
1410 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-D4EoOw8F.js1886 KB1357 KB (72%)✓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.js30 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
90 resources · 11.5 MB · 1.4 MB savings available
FIX
90 resources · 11.5 MB · 1.4 MB savings available
Warning::
Page weight 10.5 MB over 1MB target
Got: 11.5 MB Expected: ≤ 1 MB
Info::
~1.4 MB of savings available
Warning::
74 third-party resources (100% of weight)
Info::
6 resources over 200KB
90 resources · 11.5 MiB · 74 third-party 10.5 MiB over 1MB target
Media 64% · 7.4 MiB
JavaScript 17% · 2.0 MiB
Image 16% · 1.8 MiB
CSS 2% · 240.2 KiB
Font 1% · 72.4 KiB
Other 0% · 44.0 KiB
Document 0% · 6.2 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
47 images, 0 KB saveable
REVIEW
47 images, 0 KB saveable
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.
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/moter/flags/2_0.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://simg.s.weibo.com/moter/flags/32_0.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://simg.s.weibo.com/imgtool/20240828_damai_io... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
47 images 1.8 MB
0 oversized -0 KB
45 legacy format
5 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

C
JS Execution Cost
Action
1976ms total JS execution
REVIEW
1976ms total JS execution
Warning::
https://h5.sinaimg.cn/m/weibo-pro-next/assets/inde...: 876ms CPU time
Warning::
https://weibo.com/newlogin?url=https%3A%2F%2Fweibo...: 626ms CPU time
Warning::
Unattributable: 474ms CPU time
Warning::
Third-party scripts: 1350ms (68% of total)

Main Thread Breakdown

Other 40% Script Evaluation 33% Style & Layout 15% Rendering 7%
ScriptTotalScriptingParse/CompileParty
https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-D4EoOw8F.js876ms608ms8ms3rd
https://weibo.com/newlogin?url=https%3A%2F%2Fweibo.com%2F626ms3ms1ms1st
Unattributable474ms11ms0ms3rd
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
4 fonts (72 KB)
PASS
4 fonts (72 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

72 KB total

Render-blocking

0

of 4

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 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 5.3 s LCP 6.1 sdata:application/font-woff;base64,d09GRgABAAAAAIWMAAsAAAAA2kAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…font-woff;base64,d09GRg... data:application/font-woff;base64,d09GRgABAAAAAIWMAAsAAAAA2kAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 33.4 KiB — 72 ms — font-display: swapdata:application/font-woff;base64,d09GRgABAAAAAGRIAAsAAAAApAwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…font-woff;base64,d09GRg... data:application/font-woff;base64,d09GRgABAAAAAGRIAAsAAAAApAwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 25.1 KiB — 67 ms — font-display: swapdata:application/font-woff;base64,d09GRgABAAAAAC9UAAsAAAAAUBwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…font-woff;base64,d09GRg... data:application/font-woff;base64,d09GRgABAAAAAC9UAAsAAAAAUBwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 11.8 KiB — 69 ms — font-display: swapdata:application/font-woff;base64,d09GRgABAAAAAAhAAAoAAAAAB/gAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABPUy8yA…gAAQAAAAAAAAAAAAAAAAAAA... data:application/font-woff;base64,d09GRgABAAAAAAhAAAoAAAAAB/gAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABPUy8yA… — 2.1 KiB — 25 ms — font-display: swap
font-woff;base64,d09GRg... woff swap
Size 33 KB
Load time 72 ms
Start 7.4 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 67 ms
Start 7.5 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 69 ms
Start 7.5 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 25 ms
Start 8.2 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 ~22 KB and ~44 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
90 requests over 10710ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 5.3 s LCP 6.1 shttps://weibo.com// https://weibo.com/ — 302 — 559 B — 928 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=1776360120725&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=1776360120725&sudaref= — 200 — 2.8 KiB — 1.2 s — 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 — 367 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 — 30.2 KiB — 474 ms — h2https://passport.weibo.com/sso/bdpassport.weibo.com/sso/bd https://passport.weibo.com/sso/bd — 200 — 392 B — 305 ms — h2https://passport.weibo.com/favicon.icopassport.weibo.com/favicon.ico https://passport.weibo.com/favicon.ico — 200 — 5.6 KiB — 301 ms — h2https://passport.weibo.com/visitor/genvisitor2passport.weibo.com/visitor/genvisit... https://passport.weibo.com/visitor/genvisitor2 — 200 — 1.6 KiB — 304 ms — h2https://login.sina.com.cn/visitor/visitor?a=crossdomain&s=_2AkMevZWMf8NxqwFRm_sRyGPkaIpwzQnEieKo4WRXJRMxHRl-yT9kqkc_tRB6NT27Y0C7cQIFi6vqqGxglXXWf3Ngdoor&sp=0033WrSXqPxfM72-Ws9jqgMF55529P9D9W5HScT8cOgBlJDphG42pGj9&from=weibo&_rand=0.12254723553338143&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=_2AkMevZWMf8NxqwFRm_sRyGPkaIpwzQnEieKo4WRXJRMxHRl-yT9kqkc_tRB6NT27Y0C7cQIFi6vqqGxglXXWf3Ngdoor&sp=0033WrSXqPxfM72-Ws9jqgMF55529P9D9W5HScT8cOgBlJDphG42pGj9&from=weibo&_rand=0.12254723553338143&entry=miniblog&url=https%3A%2F%2Fweibo.com%2F — 302 — 791 B — 1.2 s — h2https://weibo.com// https://weibo.com/ — 302 — 581 B — 339 ms — h2https://weibo.com/newlogin?url=https%3A%2F%2Fweibo.com%2F/newlogin?url=https%3A%2F%2Fweibo.c... https://weibo.com/newlogin?url=https%3A%2F%2Fweibo.com%2F — 200 — 1.6 KiB — 300 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 — 19.6 KiB — 1.0 s — 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 — 2.9 KiB — 1.4 s — h2https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-D4EoOw8F.jsh5.sinaimg.cn/m/weibo-pro-next/asse... https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-D4EoOw8F.js — 200 — 1.8 MiB — 180 ms — h2https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-C9jSqwDg.cssh5.sinaimg.cn/m/weibo-pro-next/asse... https://h5.sinaimg.cn/m/weibo-pro-next/assets/index-C9jSqwDg.css — 200 — 220.5 KiB — 35 ms — h2https://cstaticdun.126.net/load.min.jscstaticdun.126.net/load.min.js https://cstaticdun.126.net/load.min.js — 200 — 15.0 KiB — 234 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 — 4.7 KiB — 28 ms — h2https://static.geetest.com/v4/gt4.jsstatic.geetest.com/v4/gt4.js https://static.geetest.com/v4/gt4.js — 200 — 4.7 KiB — 68 ms — h2https://a.sinaimg.cn/mintra/pic/2201111119/wza/aria.js?appid=dc65fe7d7d2aaf372b1ac9945ffbd093a.sinaimg.cn/mintra/pic/2201111119/... https://a.sinaimg.cn/mintra/pic/2201111119/wza/aria.js?appid=dc65fe7d7d2aaf372b1ac9945ffbd093 — 200 — 14.0 KiB — 1.3 s — h2https://a.sinaimg.cn/mintra/pic/2406250331/48po.jsa.sinaimg.cn/mintra/pic/2406250331/... https://a.sinaimg.cn/mintra/pic/2406250331/48po.js — 200 — 5.1 KiB — 1.3 s — h2https://h5.sinaimg.cn/m/reward-pc-kits/sdk.js?version=2.1.5h5.sinaimg.cn/m/reward-pc-kits/sdk.... https://h5.sinaimg.cn/m/reward-pc-kits/sdk.js?version=2.1.5 — 200 — 66.2 KiB — 20 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAAAXNSR0IArs4c6QAADXhJREFUeF7tX…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAIAAAACACAYAAADDPmHLAAAAAXNSR0IArs4c6QAADXhJREFUeF7tX… — 200 — 0 B — 0 ms — datahttps://weibo.com/ajax/config/get_config/ajax/config/get_config https://weibo.com/ajax/config/get_config — 200 — 828 B — 323 ms — h2https://weibo.com/ajax/statuses/config/ajax/statuses/config https://weibo.com/ajax/statuses/config — 200 — 6.5 KiB — 320 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 — 517.5 KiB — 582 ms — h2data:application/font-woff;base64,d09GRgABAAAAAIWMAAsAAAAA2kAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…data:application/font-woff;base64,d... data:application/font-woff;base64,d09GRgABAAAAAIWMAAsAAAAA2kAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 200 — 33.4 KiB — 72 ms — datadata:application/font-woff;base64,d09GRgABAAAAAGRIAAsAAAAApAwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…data:application/font-woff;base64,d... data:application/font-woff;base64,d09GRgABAAAAAGRIAAsAAAAApAwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 200 — 25.1 KiB — 67 ms — datadata:application/font-woff;base64,d09GRgABAAAAAC9UAAsAAAAAUBwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA…data:application/font-woff;base64,d... data:application/font-woff;base64,d09GRgABAAAAAC9UAAsAAAAAUBwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCA… — 200 — 11.8 KiB — 69 ms — datahttps://a.sinaimg.cn/mintra/pic/2201190827/32aria.pnga.sinaimg.cn/mintra/pic/2201190827/... https://a.sinaimg.cn/mintra/pic/2201190827/32aria.png — 200 — 56.5 KiB — 496 ms — h2https://weibo.com/ajax/getNavConfig/ajax/getNavConfig https://weibo.com/ajax/getNavConfig — 200 — 898 B — 301 ms — h2https://weibo.com/ajax/feed/allGroups?is_new_segment=1&fetch_hot=1/ajax/feed/allGroups?is_new_segment... https://weibo.com/ajax/feed/allGroups?is_new_segment=1&fetch_hot=1 — 200 — 2.2 KiB — 404 ms — h2
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s FCP 5.3 s LCP 6.1 shttps://weibo.com// https://weibo.com/ — 302 — 559 B — 928 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=1776360120725&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=1776360120725&sudaref= — 200 — 2.8 KiB — 1.2 s — 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 — 367 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 — 30.2 KiB — 474 ms — h2https://passport.weibo.com/sso/bdpassport.weibo.com/sso/bd https://passport.weibo.com/sso/bd — 200 — 392 B — 305 ms — h2https://passport.weibo.com/favicon.icopassport.weibo.com/favicon.ico https://passport.weibo.com/favicon.ico — 200 — 5.6 KiB — 301 ms — h2https://passport.weibo.com/visitor/genvisitor2passport.weibo.com/visitor/genvisit... https://passport.weibo.com/visitor/genvisitor2 — 200 — 1.6 KiB — 304 ms — h2https://login.sina.com.cn/visitor/visitor?a=crossdomain&s=_2AkMevZWMf8NxqwFRm_sRyGPkaIpwzQnEieKo4WRXJRMxHRl-yT9kqkc_tRB6NT27Y0C7cQIFi6vqqGxglXXWf3Ngdoor&sp=0033WrSXqPxfM72-Ws9jqgMF55529P9D9W5HScT8cOgBlJDphG42pGj9&from=weibo&_rand=0.12254723553338143&entry=miniblog&url=https%3A%2F%2Fweibo.com%2Flogin.sina.com.cn/visitor/visitor?a... 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958 ms — h2https://wx1.sinaimg.cn/orj360/7e682393ly1ic7m5s8j6oj20wd1bntgj.jpgwx1.sinaimg.cn/orj360/7e682393ly1ic... https://wx1.sinaimg.cn/orj360/7e682393ly1ic7m5s8j6oj20wd1bntgj.jpg — 200 — 31.9 KiB — 1.1 s — h2https://wx3.sinaimg.cn/orj360/7e682393ly1ic7m8s5jmkj23344mpe82.jpgwx3.sinaimg.cn/orj360/7e682393ly1ic... https://wx3.sinaimg.cn/orj360/7e682393ly1ic7m8s5jmkj23344mpe82.jpg — 200 — 33.7 KiB — 1.4 s — h2https://wx1.sinaimg.cn/orj360/7e682393ly1ic7m8pz9lmj22ow44mx6p.jpgwx1.sinaimg.cn/orj360/7e682393ly1ic... https://wx1.sinaimg.cn/orj360/7e682393ly1ic7m8pz9lmj22ow44mx6p.jpg — 200 — 29.4 KiB — 1.1 s — h2https://wx1.sinaimg.cn/orj360/7e682393ly1ic7m8qpxqbj22m83xcqv6.jpgwx1.sinaimg.cn/orj360/7e682393ly1ic... https://wx1.sinaimg.cn/orj360/7e682393ly1ic7m8qpxqbj22m83xcqv6.jpg — 200 — 40.8 KiB — 1.1 s — h2https://wx1.sinaimg.cn/orj480/002TLsr9ly1ic90logtkgj60zk0k0myu02.jpgwx1.sinaimg.cn/orj480/002TLsr9ly1ic... https://wx1.sinaimg.cn/orj480/002TLsr9ly1ic90logtkgj60zk0k0myu02.jpg — 200 — 31.7 KiB — 1.1 s — h2https://wx3.sinaimg.cn/orj480/002TLsr9ly1ic90ljhwgpj60zk0k0juc02.jpgwx3.sinaimg.cn/orj480/002TLsr9ly1ic... https://wx3.sinaimg.cn/orj480/002TLsr9ly1ic90ljhwgpj60zk0k0juc02.jpg — 200 — 40.3 KiB — 1.4 s — h2https://wx2.sinaimg.cn/orj480/002TLsr9ly1ic90lj5hhjj60zk0k00ve02.jpgwx2.sinaimg.cn/orj480/002TLsr9ly1ic... https://wx2.sinaimg.cn/orj480/002TLsr9ly1ic90lj5hhjj60zk0k00ve02.jpg — 200 — 45.1 KiB — 960 ms — h2https://wx4.sinaimg.cn/orj480/002TLsr9ly1ic90lk8eltj60zk0k03zx02.jpgwx4.sinaimg.cn/orj480/002TLsr9ly1ic... https://wx4.sinaimg.cn/orj480/002TLsr9ly1ic90lk8eltj60zk0k03zx02.jpg — 200 — 22.4 KiB — 1.2 s — h2https://wx2.sinaimg.cn/orj480/002TLsr9ly1ic90lkc6zyj60zk0k0n0j02.jpgwx2.sinaimg.cn/orj480/002TLsr9ly1ic... https://wx2.sinaimg.cn/orj480/002TLsr9ly1ic90lkc6zyj60zk0k0n0j02.jpg — 200 — 47.6 KiB — 955 ms — h2https://wx4.sinaimg.cn/orj480/002TLsr9ly1ic90lizpksj60zk0k0wh502.jpgwx4.sinaimg.cn/orj480/002TLsr9ly1ic... https://wx4.sinaimg.cn/orj480/002TLsr9ly1ic90lizpksj60zk0k0wh502.jpg — 200 — 39.3 KiB — 1.2 s — h2https://wx2.sinaimg.cn/orj480/002TLsr9ly1ic90ljzc19j60zk0k0gn502.jpgwx2.sinaimg.cn/orj480/002TLsr9ly1ic... https://wx2.sinaimg.cn/orj480/002TLsr9ly1ic90ljzc19j60zk0k0gn502.jpg — 200 — 28.9 KiB — 962 ms — h2https://wx1.sinaimg.cn/orj480/002TLsr9ly1ic90lnto3bj60zk0k0whw02.jpgwx1.sinaimg.cn/orj480/002TLsr9ly1ic... https://wx1.sinaimg.cn/orj480/002TLsr9ly1ic90lnto3bj60zk0k0whw02.jpg — 200 — 47.8 KiB — 1.1 s — h2https://wx2.sinaimg.cn/orj480/002TLsr9ly1ic90lm1y4ij60zk0k0dh702.jpgwx2.sinaimg.cn/orj480/002TLsr9ly1ic... https://wx2.sinaimg.cn/orj480/002TLsr9ly1ic90lm1y4ij60zk0k0dh702.jpg — 200 — 21.6 KiB — 977 ms — h2https://tvax4.sinaimg.cn/crop.0.0.690.690.1024/002TLsr9ly8iakuy3heb6j60j60j6wex02.jpg?KID=imgbed,tva&Expires=1776370928&ssig=WYcMT6rYLCtvax4.sinaimg.cn/crop.0.0.690.690.1... https://tvax4.sinaimg.cn/crop.0.0.690.690.1024/002TLsr9ly8iakuy3heb6j60j60j6wex02.jpg?KID=imgbed,tva&Expires=1776370928&ssig=WYcMT6rYLC — 200 — 26.9 KiB — 51 ms — h2https://tvax1.sinaimg.cn/crop.7.22.415.415.1024/7e682393ly8gtv3i2v7r2j20c80c73yx.jpg?KID=imgbed,tva&Expires=1776370928&ssig=AU4wYVEjExtvax1.sinaimg.cn/crop.7.22.415.415.... https://tvax1.sinaimg.cn/crop.7.22.415.415.1024/7e682393ly8gtv3i2v7r2j20c80c73yx.jpg?KID=imgbed,tva&Expires=1776370928&ssig=AU4wYVEjEx — 200 — 23.7 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 — 5.5 KiB — 962 ms — h2https://livephoto.us.sinaimg.cn/0035QmzGjx08wUQjBrRC0f0f0100gqMT0k01.mov?Expires=1776363728&ssig=YSTNvofA9u&KID=unistore,videolivephoto.us.sinaimg.cn/0035QmzGjx0... https://livephoto.us.sinaimg.cn/0035QmzGjx08wUQjBrRC0f0f0100gqMT0k01.mov?Expires=1776363728&ssig=YSTNvofA9u&KID=unistore,video — 206 — 175.8 KiB — 940 ms — h2https://livephoto.us.sinaimg.cn/0035QmzGjx08wUQjBrRC0f0f0100gqMT0k01.mov?Expires=1776363728&ssig=YSTNvofA9u&KID=unistore,videolivephoto.us.sinaimg.cn/0035QmzGjx0... https://livephoto.us.sinaimg.cn/0035QmzGjx08wUQjBrRC0f0f0100gqMT0k01.mov?Expires=1776363728&ssig=YSTNvofA9u&KID=unistore,video — 206 — 17.3 KiB — 20 ms — h2https://livephoto.us.sinaimg.cn/0035QmzGjx08wUQjBrRC0f0f0100gqMT0k01.mov?Expires=1776363728&ssig=YSTNvofA9u&KID=unistore,videolivephoto.us.sinaimg.cn/0035QmzGjx0... https://livephoto.us.sinaimg.cn/0035QmzGjx08wUQjBrRC0f0f0100gqMT0k01.mov?Expires=1776363728&ssig=YSTNvofA9u&KID=unistore,video — 206 — 3.5 MiB — 177 ms — h2https://weibo.com/favicon.ico/favicon.ico https://weibo.com/favicon.ico — 200 — 10.2 KiB — 315 ms — h2https://a.sinaimg.cn/mintra/pic/2112130543/weibo_login.mp4a.sinaimg.cn/mintra/pic/2112130543/... https://a.sinaimg.cn/mintra/pic/2112130543/weibo_login.mp4 — 206 — 3.0 MiB — 1 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
68% of JavaScript execution is third-party
First-party Third-party 1350ms · 1886KB · ¥67/mo
h5.sinaimg.cn
Other
Costly
Execution 876ms
Transfer 1886 KB
Unused 72%
Monthly Cost ¥43/mo
Unattributable
Other
Costly
Execution 474ms
Transfer 0 KB
Monthly Cost ¥23/mo

These scripts may cost more than they're worth

  • h5.sinaimg.cn adds 876ms and costs ~¥43/month
  • Unattributable adds 474ms and costs ~¥23/month

68% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

h5.sinaimg.cn takes 876ms 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

72% 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

Unattributable takes 474ms 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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