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https://51.la

Performance

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

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

Mobile Desktop
63
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
78
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.

922 ms

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

2.73 s

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

85 ms

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

0.409

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

1.34 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.

2.74 s

Page Load Progression

689 ms
1.4 s
2.1 s
2.8 s
3.4 s
4.1 s
4.8 s
5.5 s
Checks
15
6 PASS 5 REVIEW 2 FIX
F
Page Weight Budget
Action
11.9 MB transferred, 99 requests
FIX
11.9 MB transferred, 99 requests
Critical::
Page weighs 13.0 MB (11.9 MB transferred)
Warning::
Images are 11.3 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 11.3 MB
Info::
99 HTTP requests
Info::
Estimated 2.5 g CO2 per page load
11.9 MB / 2.4 MB budget
11.9 MB transferred
99 requests
2.5 g CO2 per page load
Images 11.3 MiB 95%
JavaScript 398.6 KiB 3%
Other 131.5 KiB 1%
CSS 61.8 KiB 1%
Fonts 4.4 KiB 0%
Other 520 B 0%
HTML 462 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

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
87 images, 0 KB saveable
REVIEW
87 images, 0 KB saveable
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/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_003.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/evaluate-name-1.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://sdk.51.la/icon/4-1.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
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/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_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_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_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_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_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_007.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/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/site/site_006.gif 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/png/anquan_logo-DsWQFSvr.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/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-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_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_001.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
87 images 11.3 MB
0 oversized -0 KB
87 legacy format
25 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

B
JS Execution Cost
994ms total JS execution
REVIEW
994ms total JS execution
Warning::
https://51.la/js/index-8kzxuVEg.js: 431ms CPU time
Warning::
Unattributable: 353ms CPU time
Info::
https://51.la/: 210ms CPU time
Info::
Third-party scripts: 353ms (36% of total)

Main Thread Breakdown

Other 50% Script Evaluation 25% Style & Layout 17% Rendering 6%
ScriptTotalScriptingParse/CompileParty
https://51.la/js/index-8kzxuVEg.js431ms244ms3ms1st
Unattributable353ms3ms0ms3rd
https://51.la/210ms2ms0ms1st
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
99 resources · 11.9 MB · 281 KB savings available
REVIEW
99 resources · 11.9 MB · 281 KB savings available
Warning::
Page weight 10.9 MB over 1MB target
Got: 11.9 MB Expected: ≤ 1 MB
Info::
~281 KB of savings available
Info::
7 third-party resources (2% of weight)
Info::
22 resources over 200KB
99 resources · 11.9 MiB · 7 third-party 10.9 MiB over 1MB target
Image 95% · 11.3 MiB
JavaScript 3% · 398.6 KiB
Other 1% · 131.5 KiB
CSS 1% · 61.8 KiB
Font 0% · 4.4 KiB
Document 0% · 982 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 11.9 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 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 922 ms LCP 2.7 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 420 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
Network Waterfall
99 requests over 3262ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 922 ms LCP 2.7 shttps://51.la// https://51.la/ — 200 — 462 B — 28 ms — h2https://51.la/js/index-8kzxuVEg.js/js/index-8kzxuVEg.js https://51.la/js/index-8kzxuVEg.js — 200 — 387.4 KiB — 44 ms — h2https://51.la/css/index-CfDB1C6o.css/css/index-CfDB1C6o.css https://51.la/css/index-CfDB1C6o.css — 200 — 53.2 KiB — 25 ms — h2https://51.la/image/invite.png/image/invite.png https://51.la/image/invite.png — 200 — 5.0 KiB — 9 ms — h2https://51.la/api/sso/lookup/api/sso/lookup https://51.la/api/sso/lookup — 401 — 248 B — 807 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 — 17 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 — 25 ms — h2https://51.la/image/wechat.png/image/wechat.png https://51.la/image/wechat.png — 200 — 23.4 KiB — 16 ms — h2https://51.la/image/footer-bg.png/image/footer-bg.png https://51.la/image/footer-bg.png — 200 — 7.4 KiB — 9 ms — h2https://51.la/js/Home-CKY2M37V.js/js/Home-CKY2M37V.js https://51.la/js/Home-CKY2M37V.js — 200 — 11.2 KiB — 8 ms — h2https://51.la/css/Home-Cjjvo9dx.css/css/Home-Cjjvo9dx.css https://51.la/css/Home-Cjjvo9dx.css — 200 — 8.6 KiB — 10 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 — 836 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 — 1.1 s — 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 — 1.6 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 — 585 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 — 173 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 — 141 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 — 412 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 — 661 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 — 229 ms — h2https://51.la/image/community-3-chatu.png/image/community-3-chatu.png https://51.la/image/community-3-chatu.png — 200 — 678.0 KiB — 761 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 — 150 ms — h2https://51.la/image/production-yunran.png/image/production-yunran.png https://51.la/image/production-yunran.png — 200 — 305.6 KiB — 579 ms — h2https://51.la/image/production-1.png/image/production-1.png https://51.la/image/production-1.png — 200 — 12.6 KiB — 159 ms — h2https://51.la/image/production-2.png/image/production-2.png https://51.la/image/production-2.png — 200 — 9.8 KiB — 235 ms — h2https://51.la/image/production-3.png/image/production-3.png https://51.la/image/production-3.png — 200 — 8.5 KiB — 236 ms — h2https://51.la/image/fuwu-yunran.png/image/fuwu-yunran.png https://51.la/image/fuwu-yunran.png — 200 — 179.9 KiB — 571 ms — h2https://51.la/image/fuwu-left-bg.png/image/fuwu-left-bg.png https://51.la/image/fuwu-left-bg.png — 200 — 10.4 KiB — 171 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 922 ms LCP 2.7 shttps://51.la// https://51.la/ — 200 — 462 B — 28 ms — h2https://51.la/js/index-8kzxuVEg.js/js/index-8kzxuVEg.js https://51.la/js/index-8kzxuVEg.js — 200 — 387.4 KiB — 44 ms — h2https://51.la/css/index-CfDB1C6o.css/css/index-CfDB1C6o.css https://51.la/css/index-CfDB1C6o.css — 200 — 53.2 KiB — 25 ms — h2https://51.la/image/invite.png/image/invite.png https://51.la/image/invite.png — 200 — 5.0 KiB — 9 ms — h2https://51.la/api/sso/lookup/api/sso/lookup https://51.la/api/sso/lookup — 401 — 248 B — 807 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 — 17 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 — 25 ms — h2https://51.la/image/wechat.png/image/wechat.png https://51.la/image/wechat.png — 200 — 23.4 KiB — 16 ms — h2https://51.la/image/footer-bg.png/image/footer-bg.png https://51.la/image/footer-bg.png — 200 — 7.4 KiB — 9 ms — h2https://51.la/js/Home-CKY2M37V.js/js/Home-CKY2M37V.js https://51.la/js/Home-CKY2M37V.js — 200 — 11.2 KiB — 8 ms — h2https://51.la/css/Home-Cjjvo9dx.css/css/Home-Cjjvo9dx.css https://51.la/css/Home-Cjjvo9dx.css — 200 — 8.6 KiB — 10 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 — 836 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 — 1.1 s — 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 — 1.6 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 — 585 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 — 173 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 — 141 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 — 412 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 — 661 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 — 229 ms — h2https://51.la/image/community-3-chatu.png/image/community-3-chatu.png https://51.la/image/community-3-chatu.png — 200 — 678.0 KiB — 761 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 — 150 ms — h2https://51.la/image/production-yunran.png/image/production-yunran.png https://51.la/image/production-yunran.png — 200 — 305.6 KiB — 579 ms — h2https://51.la/image/production-1.png/image/production-1.png https://51.la/image/production-1.png — 200 — 12.6 KiB — 159 ms — h2https://51.la/image/production-2.png/image/production-2.png https://51.la/image/production-2.png — 200 — 9.8 KiB — 235 ms — h2https://51.la/image/production-3.png/image/production-3.png https://51.la/image/production-3.png — 200 — 8.5 KiB — 236 ms — h2https://51.la/image/fuwu-yunran.png/image/fuwu-yunran.png https://51.la/image/fuwu-yunran.png — 200 — 179.9 KiB — 571 ms — h2https://51.la/image/fuwu-left-bg.png/image/fuwu-left-bg.png https://51.la/image/fuwu-left-bg.png — 200 — 10.4 KiB — 171 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 — 731 ms — h2https://51.la/image/fuwu-icon-1.png/image/fuwu-icon-1.png https://51.la/image/fuwu-icon-1.png — 200 — 1.1 KiB — 170 ms — h2https://51.la/image/fuwu-icon-2.png/image/fuwu-icon-2.png https://51.la/image/fuwu-icon-2.png — 200 — 1.2 KiB — 220 ms — h2https://51.la/image/fuwu-icon-3.png/image/fuwu-icon-3.png https://51.la/image/fuwu-icon-3.png — 200 — 1.3 KiB — 221 ms — h2https://51.la/image/fuwu-icon-4.png/image/fuwu-icon-4.png https://51.la/image/fuwu-icon-4.png — 200 — 1.3 KiB — 222 ms — h2https://51.la/image/fuwu-icon-5.png/image/fuwu-icon-5.png https://51.la/image/fuwu-icon-5.png — 200 — 1.3 KiB — 178 ms — h2https://51.la/image/fuwu-icon-6.png/image/fuwu-icon-6.png https://51.la/image/fuwu-icon-6.png — 200 — 1.1 KiB — 182 ms — h2https://51.la/image/fuwu-icon-7.png/image/fuwu-icon-7.png https://51.la/image/fuwu-icon-7.png — 200 — 1.6 KiB — 185 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 — 555 ms — h2https://51.la/image/solution-yunran.png/image/solution-yunran.png https://51.la/image/solution-yunran.png — 200 — 202.1 KiB — 587 ms — h2https://51.la/image/solution-bg.png/image/solution-bg.png https://51.la/image/solution-bg.png — 200 — 1.7 MiB — 800 ms — h2https://51.la/image/solution-1.png/image/solution-1.png https://51.la/image/solution-1.png — 200 — 547.2 KiB — 715 ms — h2https://51.la/image/solution-2.png/image/solution-2.png https://51.la/image/solution-2.png — 200 — 256.1 KiB — 644 ms — h2https://51.la/image/solution-3.png/image/solution-3.png https://51.la/image/solution-3.png — 200 — 147.5 KiB — 569 ms — h2https://51.la/image/solution-4.png/image/solution-4.png https://51.la/image/solution-4.png — 200 — 309.3 KiB — 672 ms — h2https://51.la/image/solution-5.png/image/solution-5.png https://51.la/image/solution-5.png — 200 — 598.8 KiB — 736 ms — h2https://51.la/image/solution-6.png/image/solution-6.png https://51.la/image/solution-6.png — 200 — 750.1 KiB — 751 ms — h2https://51.la/image/solution-7.png/image/solution-7.png https://51.la/image/solution-7.png — 200 — 339.0 KiB — 655 ms — h2https://51.la/image/solution-8.png/image/solution-8.png https://51.la/image/solution-8.png — 200 — 199.5 KiB — 589 ms — h2https://51.la/image/solution-9.png/image/solution-9.png https://51.la/image/solution-9.png — 200 — 147.1 KiB — 589 ms — h2https://51.la/image/evaluate-bg-1.png/image/evaluate-bg-1.png https://51.la/image/evaluate-bg-1.png — 200 — 58.1 KiB — 370 ms — h2https://51.la/image/evaluate-bg-2.png/image/evaluate-bg-2.png https://51.la/image/evaluate-bg-2.png — 200 — 62.1 KiB — 379 ms — h2https://51.la/image/evaluate-bg-3.png/image/evaluate-bg-3.png https://51.la/image/evaluate-bg-3.png — 200 — 37.1 KiB — 367 ms — h2https://51.la/image/partner-1.png/image/partner-1.png https://51.la/image/partner-1.png — 200 — 3.2 KiB — 326 ms — h2https://51.la/image/partner-2.png/image/partner-2.png https://51.la/image/partner-2.png — 200 — 8.5 KiB — 343 ms — h2https://51.la/image/partner-3.png/image/partner-3.png https://51.la/image/partner-3.png — 200 — 9.4 KiB — 385 ms — h2https://51.la/image/partner-4.png/image/partner-4.png https://51.la/image/partner-4.png — 200 — 4.3 KiB — 354 ms — h2https://51.la/image/partner-5.png/image/partner-5.png https://51.la/image/partner-5.png — 200 — 3.9 KiB — 367 ms — h2https://51.la/image/partner-6.png/image/partner-6.png https://51.la/image/partner-6.png — 200 — 4.6 KiB — 376 ms — h2https://51.la/image/site-group-bg.png/image/site-group-bg.png https://51.la/image/site-group-bg.png — 200 — 96.9 KiB — 431 ms — h2https://51.la/image/zhuce-left.png/image/zhuce-left.png https://51.la/image/zhuce-left.png — 200 — 345.5 KiB — 665 ms — h2https://51.la/image/zhuce-right.png/image/zhuce-right.png https://51.la/image/zhuce-right.png — 200 — 300.7 KiB — 661 ms — h2https://51.la/gif/banner-app-CKOi1sY_.gif/gif/banner-app-CKOi1sY_.gif https://51.la/gif/banner-app-CKOi1sY_.gif — 200 — 306.6 KiB — 621 ms — h2https://51.la/gif/banner-record-CFc8_6oW.gif/gif/banner-record-CFc8_6oW.gif https://51.la/gif/banner-record-CFc8_6oW.gif — 200 — 205.2 KiB — 570 ms — h2https://51.la/gif/banner-safe-CdaMFx94.gif/gif/banner-safe-CdaMFx94.gif https://51.la/gif/banner-safe-CdaMFx94.gif — 200 — 496.5 KiB — 659 ms — h2https://51.la/gif/banner-v6-DJZ15IgC.gif/gif/banner-v6-DJZ15IgC.gif https://51.la/gif/banner-v6-DJZ15IgC.gif — 200 — 433.9 KiB — 653 ms — h2https://51.la/gif/banner-perf-CpuidH0T.gif/gif/banner-perf-CpuidH0T.gif https://51.la/gif/banner-perf-CpuidH0T.gif — 200 — 322.6 KiB — 623 ms — h2https://51.la/png/v6-icon-DU6mPp9-.png/png/v6-icon-DU6mPp9-.png https://51.la/png/v6-icon-DU6mPp9-.png — 200 — 8.0 KiB — 382 ms — h2https://51.la/image/evaluate-icon-1.png/image/evaluate-icon-1.png https://51.la/image/evaluate-icon-1.png — 200 — 43.3 KiB — 435 ms — h2https://51.la/image/evaluate-name-1.png/image/evaluate-name-1.png https://51.la/image/evaluate-name-1.png — 200 — 18.3 KiB — 426 ms — h2https://51.la/image/evaluate-icon-2.png/image/evaluate-icon-2.png https://51.la/image/evaluate-icon-2.png — 200 — 45.3 KiB — 418 ms — h2https://51.la/image/evaluate-name-2.png/image/evaluate-name-2.png https://51.la/image/evaluate-name-2.png — 200 — 21.2 KiB — 404 ms — h2https://51.la/image/evaluate-icon-3.png/image/evaluate-icon-3.png https://51.la/image/evaluate-icon-3.png — 200 — 52.6 KiB — 432 ms — h2https://51.la/image/evaluate-name-3.png/image/evaluate-name-3.png https://51.la/image/evaluate-name-3.png — 200 — 17.4 KiB — 415 ms — h2https://51.la/image/site/site_001.png/image/site/site_001.png https://51.la/image/site/site_001.png — 200 — 7.4 KiB — 417 ms — h2https://51.la/image/site/site_002.png/image/site/site_002.png https://51.la/image/site/site_002.png — 200 — 15.1 KiB — 418 ms — h2https://51.la/image/site/site_003.png/image/site/site_003.png https://51.la/image/site/site_003.png — 200 — 13.2 KiB — 442 ms — h2https://51.la/image/site/site_004.png/image/site/site_004.png https://51.la/image/site/site_004.png — 200 — 9.1 KiB — 421 ms — h2https://51.la/image/site/site_005.png/image/site/site_005.png https://51.la/image/site/site_005.png — 200 — 5.2 KiB — 421 ms — h2https://51.la/image/site/site_006.gif/image/site/site_006.gif https://51.la/image/site/site_006.gif — 200 — 7.4 KiB — 439 ms — h2https://51.la/image/site/site_007.png/image/site/site_007.png https://51.la/image/site/site_007.png — 200 — 9.7 KiB — 428 ms — h2https://51.la/image/site/site_008.png/image/site/site_008.png https://51.la/image/site/site_008.png — 200 — 6.6 KiB — 429 ms — h2https://51.la/image/site/site_009.png/image/site/site_009.png https://51.la/image/site/site_009.png — 200 — 19.0 KiB — 440 ms — h2https://51.la/image/site/site_010.png/image/site/site_010.png https://51.la/image/site/site_010.png — 200 — 14.1 KiB — 521 ms — h2https://51.la/image/site/site_011.png/image/site/site_011.png https://51.la/image/site/site_011.png — 200 — 10.8 KiB — 440 ms — h2https://51.la/image/site/site_012.png/image/site/site_012.png https://51.la/image/site/site_012.png — 200 — 20.6 KiB — 445 ms — h2https://51.la/image/site/site_013.png/image/site/site_013.png https://51.la/image/site/site_013.png — 200 — 17.6 KiB — 448 ms — h2https://51.la/image/site/site_014.png/image/site/site_014.png https://51.la/image/site/site_014.png — 200 — 18.0 KiB — 445 ms — h2https://51.la/image/site/site_015.png/image/site/site_015.png https://51.la/image/site/site_015.png — 200 — 16.0 KiB — 459 ms — h2https://51.la/image/site/site_016.png/image/site/site_016.png https://51.la/image/site/site_016.png — 200 — 10.7 KiB — 454 ms — h2https://51.la/image/site-more.png/image/site-more.png https://51.la/image/site-more.png — 200 — 421 B — 452 ms — h2https://51.la/image/site/site_018.png/image/site/site_018.png https://51.la/image/site/site_018.png — 200 — 11.7 KiB — 464 ms — h2https://51.la/image/site/site_017.png/image/site/site_017.png https://51.la/image/site/site_017.png — 200 — 15.9 KiB — 460 ms — h2https://51.la/favicon.ico/favicon.ico https://51.la/favicon.ico — 200 — 520 B — 375 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 — 100.9 KiB — 1.9 s — h2https://51.la/image/ad-tiao.png/image/ad-tiao.png https://51.la/image/ad-tiao.png — 200 — 16.6 KiB — 7 ms — h2https://cdnstdbs.51.la/static-advertisement/20260417172638-20260417-172542.gifcdnstdbs.51.la/static-advertisement... https://cdnstdbs.51.la/static-advertisement/20260417172638-20260417-172542.gif — 200 — 79.9 KiB — 44 ms — h2https://cdnstdbs.51.la/static-advertisement/20241127151536-test-ad.pngcdnstdbs.51.la/static-advertisement... https://cdnstdbs.51.la/static-advertisement/20241127151536-test-ad.png — 200 — 1.9 KiB — 40 ms — h2https://51.la/image/ad-more-bg.png/image/ad-more-bg.png https://51.la/image/ad-more-bg.png — 200 — 92.8 KiB — 11 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
36% of JavaScript execution is third-party
First-party Third-party 353ms · 0KB · ₭102006/mo
Unattributable
Other
Costly
Execution 353ms
Transfer 0 KB
Monthly Cost ₭102006/mo

These scripts may cost more than they're worth

  • Unattributable adds 353ms and costs ~₭102006/month

Unattributable takes 353ms 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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