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https://51.la

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
76
GRADE
C
FIX
3
REVIEW
4
PASS
8
INFO
2

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

Mobile Desktop
47
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
84
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
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.

3.31 s

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

13.56 s

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

814 ms

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

0.000

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

4.39 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.

13.61 s

Page Load Progression

860 ms
1.7 s
2.6 s
3.4 s
4.3 s
5.2 s
6.0 s
6.9 s
Checks
17
8 PASS 4 REVIEW 3 FIX
F
Page Weight Budget
Action
8.7 MB transferred, 85 requests
FIX
8.7 MB transferred, 85 requests
Critical::
Page weighs 9.8 MB (8.7 MB transferred)
Warning::
Images are 8.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 8.1 MB
Info::
85 HTTP requests
Info::
Estimated 1.8 g CO2 per page load
8.7 MB / 2.4 MB budget
8.7 MB transferred
85 requests
1.8 g CO2 per page load
Images 8.1 MiB 93%
JavaScript 398.6 KiB 4%
Other 131.5 KiB 1%
CSS 61.8 KiB 1%
Fonts 4.4 KiB 0%
Other 520 B 0%
HTML 463 B 0%
Other 0 B 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

F
JS Execution Cost
Action
4141ms total JS execution
FIX
4141ms total JS execution
Warning::
https://51.la/js/index-8kzxuVEg.js: 1975ms CPU time
Warning::
https://51.la/: 1155ms CPU time
Warning::
Unattributable: 1010ms CPU time
Info::
Third-party scripts: 1010ms (24% of total)

Main Thread Breakdown

Other 39% Style & Layout 26% Script Evaluation 24% Rendering 9%
ScriptTotalScriptingParse/CompileParty
https://51.la/js/index-8kzxuVEg.js1975ms992ms9ms1st
https://51.la/1155ms10ms1ms1st
Unattributable1010ms10ms0ms3rd
D
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.
Info::
ETag present — enables conditional (304) responses
Info::
Last-Modified header present

No Cache-Control header

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

C
Image Optimization
Action
73 images, 0 KB saveable
REVIEW
73 images, 0 KB saveable
Warning::
https://51.la/png/v6-icon-DU6mPp9-.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_001.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/evaluate-name-3.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_004.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_014.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/evaluate-name-2.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/evaluate-icon-3.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_009.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_017.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_016.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/evaluate-name-1.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_011.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/evaluate-icon-1.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_010.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_012.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_015.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_005.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_013.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_003.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_007.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_008.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/evaluate-icon-2.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_002.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_018.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/image/site/site_006.gif is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://51.la/png/anquan_logo-DsWQFSvr.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
73 images 8.1 MB
0 oversized -0 KB
72 legacy format
26 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

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
JS Bundles
Action
2 scripts, 281 KB unused
REVIEW
2 scripts, 281 KB unused
Warning::
https://51.la/js/index-8kzxuVEg.js: 281 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 281 KB
281 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://51.la/js/index-8kzxuVEg.js387 KB281 KB (73%)✓1st
https://51.la/js/Home-CKY2M37V.js11 KB—✓1st

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
Page Weight Inventory
Action
85 resources · 8.7 MB · 281 KB savings available
REVIEW
85 resources · 8.7 MB · 281 KB savings available
Warning::
Page weight 7.7 MB over 1MB target
Got: 8.7 MB Expected: ≤ 1 MB
Info::
~281 KB of savings available
Info::
8 third-party resources (2% of weight)
Info::
19 resources over 200KB
85 resources · 8.7 MiB · 8 third-party 7.7 MiB over 1MB target
Image 93% · 8.1 MiB
JavaScript 4% · 398.6 KiB
Other 1% · 131.5 KiB
CSS 1% · 61.8 KiB
Font 0% · 4.4 KiB
Document 0% · 983 B

~281.4 KiB of savings available

Remove unused JavaScript: 281.4 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
2% third-party, 0 ms blocking
PASS
2% third-party, 0 ms blocking
Info::
Third-party code accounts for 2% of page weight (214.4 KiB of 8.7 MiB)
Info::
Third-party blocking time is low (0 ms)
98%
First-party Third-party
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
1 fonts (4 KB)
PASS
1 fonts (4 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

4 KB total

Render-blocking

0

of 1

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 14.0 s FCP 3.3 s LCP 13.6 shttps://51.la/font/iconfont.woff2iconfont.woff2 https://51.la/font/iconfont.woff2 — 4.4 KiB — 13 ms — font-display: swap
iconfont.woff2 woff2 swap
Size 4 KB
Load time 13 ms
Start 413 ms
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
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
85 requests over 4589ms
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 3.3 s LCP 13.6 shttps://51.la// https://51.la/ — 200 — 463 B — 33 ms — h2https://51.la/js/index-8kzxuVEg.js/js/index-8kzxuVEg.js https://51.la/js/index-8kzxuVEg.js — 200 — 387.4 KiB — 39 ms — h2https://51.la/css/index-CfDB1C6o.css/css/index-CfDB1C6o.css https://51.la/css/index-CfDB1C6o.css — 200 — 53.2 KiB — 24 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADwAAAA8CAYAAAA6/NlyAAAAAXNSR0IArs4c6QAAAYFJREFUaEPtm…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADwAAAA8CAYAAAA6/NlyAAAAAXNSR0IArs4c6QAAAYFJREFUaEPtm… — 200 — 0 B — 0 ms — datahttps://51.la/api/sso/lookup/api/sso/lookup https://51.la/api/sso/lookup — 401 — 248 B — 681 ms — h2https://51.la/png/wechat-BpCdW-3I.png/png/wechat-BpCdW-3I.png https://51.la/png/wechat-BpCdW-3I.png — 200 — 23.4 KiB — 12 ms — h2https://51.la/png/anquan_logo-DsWQFSvr.png/png/anquan_logo-DsWQFSvr.png https://51.la/png/anquan_logo-DsWQFSvr.png — 200 — 8.6 KiB — 16 ms — h2https://sdk.51.la/icon/4-1.pngsdk.51.la/icon/4-1.png https://sdk.51.la/icon/4-1.png — 200 — 1.3 KiB — 27 ms — h2https://51.la/image/wechat.png/image/wechat.png https://51.la/image/wechat.png — 200 — 23.4 KiB — 15 ms — h2https://51.la/image/computer-icon.png/image/computer-icon.png https://51.la/image/computer-icon.png — 200 — 340 B — 14 ms — h2https://51.la/js/Home-CKY2M37V.js/js/Home-CKY2M37V.js https://51.la/js/Home-CKY2M37V.js — 200 — 11.2 KiB — 19 ms — h2https://51.la/css/Home-Cjjvo9dx.css/css/Home-Cjjvo9dx.css https://51.la/css/Home-Cjjvo9dx.css — 200 — 8.6 KiB — 9 ms — h2https://51.la/font/iconfont.woff2/font/iconfont.woff2 https://51.la/font/iconfont.woff2 — 200 — 4.4 KiB — 13 ms — h2https://www.51.la/api/cms/article/topic/listwww.51.la/api/cms/article/topic/lis... https://www.51.la/api/cms/article/topic/list — 200 — 0 B — 561 ms — h2https://v6.51.la/api/ad/old/allv6.51.la/api/ad/old/all https://v6.51.la/api/ad/old/all — 200 — 15.2 KiB — 808 ms — h2https://v6.51.la/api/ad/old/allv6.51.la/api/ad/old/all https://v6.51.la/api/ad/old/all — 200 — 15.1 KiB — 1.4 s — h2https://51.la/image/community-1-chatu.png/image/community-1-chatu.png https://51.la/image/community-1-chatu.png — 200 — 219.3 KiB — 81 ms — h2https://51.la/image/community-1-yunran.png/image/community-1-yunran.png https://51.la/image/community-1-yunran.png — 200 — 104.0 KiB — 55 ms — h2https://51.la/image/community-1-icon.png/image/community-1-icon.png https://51.la/image/community-1-icon.png — 200 — 1.6 KiB — 48 ms — h2https://51.la/image/community-2-chatu.png/image/community-2-chatu.png https://51.la/image/community-2-chatu.png — 200 — 271.9 KiB — 122 ms — h2https://51.la/image/community-2-yunran.png/image/community-2-yunran.png https://51.la/image/community-2-yunran.png — 200 — 263.8 KiB — 117 ms — h2https://51.la/image/community-2-icon.png/image/community-2-icon.png https://51.la/image/community-2-icon.png — 200 — 1.9 KiB — 45 ms — h2https://51.la/image/h5-community-3-chatu.png/image/h5-community-3-chatu.png https://51.la/image/h5-community-3-chatu.png — 200 — 267.9 KiB — 135 ms — h2https://51.la/image/community-3-icon.png/image/community-3-icon.png https://51.la/image/community-3-icon.png — 200 — 1.3 KiB — 45 ms — h2https://51.la/image/production-yunran.png/image/production-yunran.png https://51.la/image/production-yunran.png — 200 — 305.6 KiB — 213 ms — h2https://51.la/image/production-1.png/image/production-1.png https://51.la/image/production-1.png — 200 — 12.6 KiB — 94 ms — h2https://51.la/image/production-2.png/image/production-2.png https://51.la/image/production-2.png — 200 — 9.8 KiB — 93 ms — h2https://51.la/image/production-3.png/image/production-3.png https://51.la/image/production-3.png — 200 — 8.5 KiB — 115 ms — h2https://51.la/image/fuwu-bottom-right-diqiu.png/image/fuwu-bottom-right-diqiu.png https://51.la/image/fuwu-bottom-right-diqiu.png — 200 — 689.7 KiB — 474 ms — h2https://51.la/image/fuwu-bottom-left-bg.png/image/fuwu-bottom-left-bg.png https://51.la/image/fuwu-bottom-left-bg.png — 200 — 146.3 KiB — 188 ms — h2
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s FCP 3.3 s LCP 13.6 shttps://51.la// https://51.la/ — 200 — 463 B — 33 ms — h2https://51.la/js/index-8kzxuVEg.js/js/index-8kzxuVEg.js https://51.la/js/index-8kzxuVEg.js — 200 — 387.4 KiB — 39 ms — h2https://51.la/css/index-CfDB1C6o.css/css/index-CfDB1C6o.css https://51.la/css/index-CfDB1C6o.css — 200 — 53.2 KiB — 24 ms — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADwAAAA8CAYAAAA6/NlyAAAAAXNSR0IArs4c6QAAAYFJREFUaEPtm…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADwAAAA8CAYAAAA6/NlyAAAAAXNSR0IArs4c6QAAAYFJREFUaEPtm… — 200 — 0 B — 0 ms — datahttps://51.la/api/sso/lookup/api/sso/lookup https://51.la/api/sso/lookup — 401 — 248 B — 681 ms — h2https://51.la/png/wechat-BpCdW-3I.png/png/wechat-BpCdW-3I.png https://51.la/png/wechat-BpCdW-3I.png — 200 — 23.4 KiB — 12 ms — h2https://51.la/png/anquan_logo-DsWQFSvr.png/png/anquan_logo-DsWQFSvr.png https://51.la/png/anquan_logo-DsWQFSvr.png — 200 — 8.6 KiB — 16 ms — h2https://sdk.51.la/icon/4-1.pngsdk.51.la/icon/4-1.png https://sdk.51.la/icon/4-1.png — 200 — 1.3 KiB — 27 ms — h2https://51.la/image/wechat.png/image/wechat.png https://51.la/image/wechat.png — 200 — 23.4 KiB — 15 ms — h2https://51.la/image/computer-icon.png/image/computer-icon.png https://51.la/image/computer-icon.png — 200 — 340 B — 14 ms — h2https://51.la/js/Home-CKY2M37V.js/js/Home-CKY2M37V.js https://51.la/js/Home-CKY2M37V.js — 200 — 11.2 KiB — 19 ms — h2https://51.la/css/Home-Cjjvo9dx.css/css/Home-Cjjvo9dx.css https://51.la/css/Home-Cjjvo9dx.css — 200 — 8.6 KiB — 9 ms — h2https://51.la/font/iconfont.woff2/font/iconfont.woff2 https://51.la/font/iconfont.woff2 — 200 — 4.4 KiB — 13 ms — h2https://www.51.la/api/cms/article/topic/listwww.51.la/api/cms/article/topic/lis... https://www.51.la/api/cms/article/topic/list — 200 — 0 B — 561 ms — h2https://v6.51.la/api/ad/old/allv6.51.la/api/ad/old/all https://v6.51.la/api/ad/old/all — 200 — 15.2 KiB — 808 ms — h2https://v6.51.la/api/ad/old/allv6.51.la/api/ad/old/all https://v6.51.la/api/ad/old/all — 200 — 15.1 KiB — 1.4 s — h2https://51.la/image/community-1-chatu.png/image/community-1-chatu.png https://51.la/image/community-1-chatu.png — 200 — 219.3 KiB — 81 ms — h2https://51.la/image/community-1-yunran.png/image/community-1-yunran.png https://51.la/image/community-1-yunran.png — 200 — 104.0 KiB — 55 ms — h2https://51.la/image/community-1-icon.png/image/community-1-icon.png https://51.la/image/community-1-icon.png — 200 — 1.6 KiB — 48 ms — h2https://51.la/image/community-2-chatu.png/image/community-2-chatu.png https://51.la/image/community-2-chatu.png — 200 — 271.9 KiB — 122 ms — h2https://51.la/image/community-2-yunran.png/image/community-2-yunran.png https://51.la/image/community-2-yunran.png — 200 — 263.8 KiB — 117 ms — h2https://51.la/image/community-2-icon.png/image/community-2-icon.png https://51.la/image/community-2-icon.png — 200 — 1.9 KiB — 45 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
24% of JavaScript execution is third-party
First-party Third-party 1010ms · 0KB · ₭291563/mo
Unattributable
Other
Costly
Execution 1010ms
Transfer 0 KB
Monthly Cost ₭291563/mo

These scripts may cost more than they're worth

  • Unattributable adds 1010ms and costs ~₭291563/month

Unattributable takes 1010ms 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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