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Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
4
REVIEW
4
PASS
7
INFO
2

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

Mobile Desktop
53
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
68
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

5.35 s

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

6.76 s

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

326 ms

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

0.040

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

6.93 s

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

9.15 s

Page Load Progression

577 ms
1.2 s
1.7 s
2.3 s
2.9 s
3.5 s
4.0 s
4.6 s
Checks
17
7 PASS 4 REVIEW 4 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (1.6 MiB of 1.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2682ms total JS execution
FIX
2682ms total JS execution
Warning::
https://www.csdn.net/: 878ms CPU time
Warning::
Unattributable: 524ms CPU time
Warning::
https://csdnimg.cn/release/cmsfe/public/js/chunk/t...: 502ms CPU time
Warning::
https://csdnimg.cn/public/common/toolbar/js/m_tool...: 269ms CPU time
Info::
https://csdnimg.cn/release/cmsfe/public/js/chunk/c...: 200ms CPU time
Warning::
Third-party scripts: 2682ms (100% of total)

Main Thread Breakdown

Script Evaluation 33% Style & Layout 26% Other 25% Script Parsing & Compilation 8% Rendering 5% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.csdn.net/878ms10ms28ms3rd
Unattributable524ms8ms0ms3rd
https://csdnimg.cn/release/cmsfe/public/js/chunk/tpl/www-index-new-m/index.58b3b1ef.js502ms439ms25ms3rd
https://csdnimg.cn/public/common/toolbar/js/m_toolbar-2.1.4.js269ms98ms3ms3rd
https://csdnimg.cn/release/cmsfe/public/js/chunk/common.3603c287.js200ms60ms110ms3rd
https://g.csdnimg.cn/common/csdn-report/report.js132ms120ms8ms3rd
https://g.csdnimg.cn/??lib/jquery/1.12.4/jquery.min.js117ms94ms17ms3rd
https://hm.baidu.com/hm.js?6bcd52f51e9b3dce32bec4a3997715ac59ms48ms5ms3rd
D
Page Weight Inventory
Action
67 resources · 1.6 MB · 193 KB savings available
FIX
67 resources · 1.6 MB · 193 KB savings available
Warning::
Page weight 648 KB over 1MB target
Got: 1.6 MB Expected: ≤ 1 MB
Info::
~193 KB of savings available
Warning::
66 third-party resources (100% of weight)
Info::
1 resources over 200KB
67 resources · 1.6 MiB · 66 third-party 647.7 KiB over 1MB target
Image 65% · 1.1 MiB
JavaScript 25% · 420.8 KiB
CSS 7% · 117.9 KiB
Document 2% · 30.1 KiB
Other 1% · 13.6 KiB

~193.0 KiB of savings available

Remove unused JavaScript: 193.0 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

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

C
Page Weight Budget
Action
1.6 MB transferred, 67 requests
REVIEW
1.6 MB transferred, 67 requests
Info::
Page weighs 3.2 MB (1.6 MB transferred)
Warning::
Images are 1.1 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.1 MB
Info::
67 HTTP requests
Info::
Estimated 0.34 g CO2 per page load
1.6 MB / 2.4 MB budget
1.6 MB transferred
67 requests
0.34 g CO2 per page load
Images 1.1 MiB 65%
JavaScript 420.8 KiB 25%
CSS 117.9 KiB 7%
HTML 30.0 KiB 2%
Other 13.6 KiB 1%
Other 4.5 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

C
Image Optimization
Action
40 images, 0 KB saveable
REVIEW
40 images, 0 KB saveable
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img-home.csdnimg.cn/images/20201125103341.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://csdnimg.cn/public/common/toolbar/images/to... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
40 images 1.1 MB
0 oversized -0 KB
40 legacy format
12 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

C
JS Bundles
Action
14 scripts, 193 KB unused
REVIEW
14 scripts, 193 KB unused
Warning::
https://csdnimg.cn/release/cmsfe/public/js/chunk/c...: 161 KB unused (71%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://csdnimg.cn/release/cmsfe/public/js/chunk/t...: 32 KB unused (50%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 193 KB
193 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://csdnimg.cn/release/cmsfe/public/js/chunk/common.3603c287.js228 KB161 KB (71%)✓3rd
https://csdnimg.cn/release/cmsfe/public/js/chunk/tpl/www-index-new-m/index.58b3b1ef.js65 KB32 KB (50%)✓3rd
https://g.csdnimg.cn/common/csdn-report/report.js22 KB—✓3rd
https://csdnimg.cn/release/cmsfe/public/js/runtime.425411eb.js1 KB—✓3rd
https://g.csdnimg.cn/user-ordercart/2.0.1/user-ordercart.js3 KB—✓3rd
https://g.csdnimg.cn/??debug/1.0.0/debug.js1 KB—✓3rd
https://g.csdnimg.cn/??lib/jquery/1.12.4/jquery.min.js33 KB—✓3rd
https://csdnimg.cn/public/common/toolbar/js/m_toolbar-2.1.4.js9 KB—✓3rd
https://g.csdnimg.cn/common/csdn-login-box/csdn-login-box.js17 KB—✓3rd
https://g.csdnimg.cn/asdf/1.0.9/trackad.js1 KB—✓3rd

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

Consider code splitting or tree shaking to reduce unused code.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

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

Green Hosting

No green hosting detected

A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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
67 requests over 5511ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 5.3 s LCP 6.8 shttps://csdn.net// https://csdn.net/ — 301 — 112 B — 700 ms — h2https://www.csdn.net/www.csdn.net/ https://www.csdn.net/ — 200 — 30.0 KiB — 1.7 s — http/1.1https://g.csdnimg.cn/??lib/jquery/1.12.4/jquery.min.jsg.csdnimg.cn/??lib/jquery/1.12.4/jq... https://g.csdnimg.cn/??lib/jquery/1.12.4/jquery.min.js — 200 — 33.2 KiB — 389 ms — h2https://g.csdnimg.cn/??debug/1.0.0/debug.jsg.csdnimg.cn/??debug/1.0.0/debug.js https://g.csdnimg.cn/??debug/1.0.0/debug.js — 200 — 1.1 KiB — 382 ms — h2https://g.csdnimg.cn/user-ordercart/2.0.1/user-ordercart.jsg.csdnimg.cn/user-ordercart/2.0.1/u... https://g.csdnimg.cn/user-ordercart/2.0.1/user-ordercart.js — 200 — 2.8 KiB — 387 ms — h2https://csdnimg.cn/release/cmsfe/public/css/common.ef7517d8.csscsdnimg.cn/release/cmsfe/public/css... https://csdnimg.cn/release/cmsfe/public/css/common.ef7517d8.css — 200 — 110.4 KiB — 340 ms — h2https://csdnimg.cn/release/cmsfe/public/css/tpl/www-index-new-m/index.493dc5e9.csscsdnimg.cn/release/cmsfe/public/css... https://csdnimg.cn/release/cmsfe/public/css/tpl/www-index-new-m/index.493dc5e9.css — 200 — 4.6 KiB — 341 ms — h2https://img-home.csdnimg.cn/images/20221123021614.pngimg-home.csdnimg.cn/images/20221123... https://img-home.csdnimg.cn/images/20221123021614.png — 200 — 987 B — 243 ms — h2https://csdnimg.cn/release/cmsfe/public/img/content-default.e5ec1ba1.pngcsdnimg.cn/release/cmsfe/public/img... https://csdnimg.cn/release/cmsfe/public/img/content-default.e5ec1ba1.png — 200 — 18.0 KiB — 341 ms — h2https://csdnimg.cn/release/cmsfe/public/js/runtime.425411eb.jscsdnimg.cn/release/cmsfe/public/js/... https://csdnimg.cn/release/cmsfe/public/js/runtime.425411eb.js — 200 — 1.2 KiB — 94 ms — h2https://csdnimg.cn/release/cmsfe/public/js/chunk/common.3603c287.jscsdnimg.cn/release/cmsfe/public/js/... https://csdnimg.cn/release/cmsfe/public/js/chunk/common.3603c287.js — 200 — 228.0 KiB — 33 ms — h2https://csdnimg.cn/release/cmsfe/public/js/chunk/tpl/www-index-new-m/index.58b3b1ef.jscsdnimg.cn/release/cmsfe/public/js/... https://csdnimg.cn/release/cmsfe/public/js/chunk/tpl/www-index-new-m/index.58b3b1ef.js — 200 — 64.7 KiB — 40 ms — h2https://g.csdnimg.cn/common/csdn-report/report.jsg.csdnimg.cn/common/csdn-report/rep... https://g.csdnimg.cn/common/csdn-report/report.js — 200 — 21.6 KiB — 18 ms — h2https://csdnimg.cn/public/common/toolbar/content_toolbar_css/m_toolbar-2.1.4.csscsdnimg.cn/public/common/toolbar/co... https://csdnimg.cn/public/common/toolbar/content_toolbar_css/m_toolbar-2.1.4.css — 200 — 2.9 KiB — 19 ms — h2https://csdnimg.cn/public/common/toolbar/js/m_toolbar-2.1.4.jscsdnimg.cn/public/common/toolbar/js... https://csdnimg.cn/public/common/toolbar/js/m_toolbar-2.1.4.js — 200 — 8.6 KiB — 326 ms — h2https://g.csdnimg.cn/common/csdn-login-box/csdn-login-box.jsg.csdnimg.cn/common/csdn-login-box/... https://g.csdnimg.cn/common/csdn-login-box/csdn-login-box.js — 200 — 16.8 KiB — 18 ms — h2https://profile-avatar.csdnimg.cn/723ae03ce6774c898444db37d09d2693_taotiezhengfeng.jpg!1profile-avatar.csdnimg.cn/723ae03ce... https://profile-avatar.csdnimg.cn/723ae03ce6774c898444db37d09d2693_taotiezhengfeng.jpg!1 — 200 — 74.3 KiB — 401 ms — h2https://i-avatar.csdnimg.cn/a0484c941a5e47e6909270a3a842e7c5_2401_84643729.jpg!1i-avatar.csdnimg.cn/a0484c941a5e47e... https://i-avatar.csdnimg.cn/a0484c941a5e47e6909270a3a842e7c5_2401_84643729.jpg!1 — 200 — 51.2 KiB — 257 ms — h2https://profile-avatar.csdnimg.cn/default.jpg!1profile-avatar.csdnimg.cn/default.j... https://profile-avatar.csdnimg.cn/default.jpg!1 — 200 — 16.6 KiB — 390 ms — h2https://profile-avatar.csdnimg.cn/777c77dbbd294bf29a1f75f2aa193884_weixin_43989195.jpg!1profile-avatar.csdnimg.cn/777c77dbb... https://profile-avatar.csdnimg.cn/777c77dbbd294bf29a1f75f2aa193884_weixin_43989195.jpg!1 — 200 — 7.1 KiB — 542 ms — h2https://profile-avatar.csdnimg.cn/1257089e0ca34de5a8856f70e8c3b6f3_m0_57476762.jpg!1profile-avatar.csdnimg.cn/1257089e0... https://profile-avatar.csdnimg.cn/1257089e0ca34de5a8856f70e8c3b6f3_m0_57476762.jpg!1 — 200 — 13.1 KiB — 450 ms — h2https://i-avatar.csdnimg.cn/458fa65e7261431b8599d0c12475bdc8_qq_40303030.jpg!1i-avatar.csdnimg.cn/458fa65e7261431... https://i-avatar.csdnimg.cn/458fa65e7261431b8599d0c12475bdc8_qq_40303030.jpg!1 — 200 — 14.5 KiB — 248 ms — h2https://profile-avatar.csdnimg.cn/dbcf5391f8ce410296cebed6cfd4bce7_fysuccess.jpg!1profile-avatar.csdnimg.cn/dbcf5391f... https://profile-avatar.csdnimg.cn/dbcf5391f8ce410296cebed6cfd4bce7_fysuccess.jpg!1 — 200 — 7.2 KiB — 398 ms — h2https://profile-avatar.csdnimg.cn/edafa15aa66b46e6baffcf8567d7ba7a_qq_29132907.jpg!1profile-avatar.csdnimg.cn/edafa15aa... https://profile-avatar.csdnimg.cn/edafa15aa66b46e6baffcf8567d7ba7a_qq_29132907.jpg!1 — 200 — 67.5 KiB — 452 ms — h2https://i-avatar.csdnimg.cn/7f7026888a4f4180a548c7433fcedca8_lxttzlove.jpg!1i-avatar.csdnimg.cn/7f7026888a4f418... https://i-avatar.csdnimg.cn/7f7026888a4f4180a548c7433fcedca8_lxttzlove.jpg!1 — 200 — 19.2 KiB — 249 ms — h2https://i-avatar.csdnimg.cn/c39a926b885a49e1a1fa7fdcaeb14501_Gr419627.jpg!1i-avatar.csdnimg.cn/c39a926b885a49e... https://i-avatar.csdnimg.cn/c39a926b885a49e1a1fa7fdcaeb14501_Gr419627.jpg!1 — 200 — 44.4 KiB — 182 ms — h2https://eva2.csdn.net/v3/06981375190026432f77c01bfca33e32/lts/groups/dadde766-b087-42da-8e67-d2499a520ee7/streams/5da0dae3-481b-478b-92ca-3caa293e4a29/logseva2.csdn.net/v3/06981375190026432f... https://eva2.csdn.net/v3/06981375190026432f77c01bfca33e32/lts/groups/dadde766-b087-42da-8e67-d2499a520ee7/streams/5da0dae3-481b-478b-92ca-3caa293e4a29/logs — 200 — 0 B — 814 ms — http/1.1https://img-home.csdnimg.cn/data_json/toolbar/toolbar1105.jsonimg-home.csdnimg.cn/data_json/toolb... https://img-home.csdnimg.cn/data_json/toolbar/toolbar1105.json — 200 — 4.4 KiB — 413 ms — h2https://silkroad.csdn.net/api/v2/assemble/list/channel/search_hot_word?new_hot_flag=1&channel_name=search_hot_word&size=10&platform=wap&imei=10_15460323950-1776799974270-589310silkroad.csdn.net/api/v2/assemble/l... https://silkroad.csdn.net/api/v2/assemble/list/channel/search_hot_word?new_hot_flag=1&channel_name=search_hot_word&size=10&platform=wap&imei=10_15460323950-1776799974270-589310 — 200 — 0 B — 828 ms — h2https://img-home.csdnimg.cn/images/20201125103341.pngimg-home.csdnimg.cn/images/20201125... https://img-home.csdnimg.cn/images/20201125103341.png — 200 — 6.7 KiB — 23 ms — h2
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 5.3 s LCP 6.8 shttps://csdn.net// https://csdn.net/ — 301 — 112 B — 700 ms — h2https://www.csdn.net/www.csdn.net/ https://www.csdn.net/ — 200 — 30.0 KiB — 1.7 s — http/1.1https://g.csdnimg.cn/??lib/jquery/1.12.4/jquery.min.jsg.csdnimg.cn/??lib/jquery/1.12.4/jq... https://g.csdnimg.cn/??lib/jquery/1.12.4/jquery.min.js — 200 — 33.2 KiB — 389 ms — h2https://g.csdnimg.cn/??debug/1.0.0/debug.jsg.csdnimg.cn/??debug/1.0.0/debug.js https://g.csdnimg.cn/??debug/1.0.0/debug.js — 200 — 1.1 KiB — 382 ms — h2https://g.csdnimg.cn/user-ordercart/2.0.1/user-ordercart.jsg.csdnimg.cn/user-ordercart/2.0.1/u... https://g.csdnimg.cn/user-ordercart/2.0.1/user-ordercart.js — 200 — 2.8 KiB — 387 ms — h2https://csdnimg.cn/release/cmsfe/public/css/common.ef7517d8.csscsdnimg.cn/release/cmsfe/public/css... https://csdnimg.cn/release/cmsfe/public/css/common.ef7517d8.css — 200 — 110.4 KiB — 340 ms — h2https://csdnimg.cn/release/cmsfe/public/css/tpl/www-index-new-m/index.493dc5e9.csscsdnimg.cn/release/cmsfe/public/css... https://csdnimg.cn/release/cmsfe/public/css/tpl/www-index-new-m/index.493dc5e9.css — 200 — 4.6 KiB — 341 ms — h2https://img-home.csdnimg.cn/images/20221123021614.pngimg-home.csdnimg.cn/images/20221123... https://img-home.csdnimg.cn/images/20221123021614.png — 200 — 987 B — 243 ms — h2https://csdnimg.cn/release/cmsfe/public/img/content-default.e5ec1ba1.pngcsdnimg.cn/release/cmsfe/public/img... https://csdnimg.cn/release/cmsfe/public/img/content-default.e5ec1ba1.png — 200 — 18.0 KiB — 341 ms — h2https://csdnimg.cn/release/cmsfe/public/js/runtime.425411eb.jscsdnimg.cn/release/cmsfe/public/js/... https://csdnimg.cn/release/cmsfe/public/js/runtime.425411eb.js — 200 — 1.2 KiB — 94 ms — h2https://csdnimg.cn/release/cmsfe/public/js/chunk/common.3603c287.jscsdnimg.cn/release/cmsfe/public/js/... https://csdnimg.cn/release/cmsfe/public/js/chunk/common.3603c287.js — 200 — 228.0 KiB — 33 ms — h2https://csdnimg.cn/release/cmsfe/public/js/chunk/tpl/www-index-new-m/index.58b3b1ef.jscsdnimg.cn/release/cmsfe/public/js/... https://csdnimg.cn/release/cmsfe/public/js/chunk/tpl/www-index-new-m/index.58b3b1ef.js — 200 — 64.7 KiB — 40 ms — h2https://g.csdnimg.cn/common/csdn-report/report.jsg.csdnimg.cn/common/csdn-report/rep... https://g.csdnimg.cn/common/csdn-report/report.js — 200 — 21.6 KiB — 18 ms — h2https://csdnimg.cn/public/common/toolbar/content_toolbar_css/m_toolbar-2.1.4.csscsdnimg.cn/public/common/toolbar/co... https://csdnimg.cn/public/common/toolbar/content_toolbar_css/m_toolbar-2.1.4.css — 200 — 2.9 KiB — 19 ms — h2https://csdnimg.cn/public/common/toolbar/js/m_toolbar-2.1.4.jscsdnimg.cn/public/common/toolbar/js... https://csdnimg.cn/public/common/toolbar/js/m_toolbar-2.1.4.js — 200 — 8.6 KiB — 326 ms — h2https://g.csdnimg.cn/common/csdn-login-box/csdn-login-box.jsg.csdnimg.cn/common/csdn-login-box/... 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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
100% of JavaScript execution is third-party
First-party Third-party 2682ms · 409KB · ¥132/mo
www.csdn.net
Other
Costly
Execution 878ms
Transfer 30 KB
Monthly Cost ¥43/mo
Unattributable
Other
Costly
Execution 524ms
Transfer 0 KB
Monthly Cost ¥26/mo
csdnimg.cn
Other
Costly
Execution 502ms
Transfer 65 KB
Unused 50%
Monthly Cost ¥25/mo
csdnimg.cn
Other
Costly
Execution 269ms
Transfer 9 KB
Monthly Cost ¥13/mo
csdnimg.cn
Other
Costly
Execution 200ms
Transfer 228 KB
Unused 71%
Monthly Cost ¥10/mo
g.csdnimg.cn
Other
Optional
Execution 132ms
Transfer 22 KB
Monthly Cost ¥7/mo
g.csdnimg.cn
Other
Optional
Execution 117ms
Transfer 33 KB
Monthly Cost ¥6/mo
hm.baidu.com
Other
Optional
Execution 59ms
Transfer 23 KB
Monthly Cost ¥3/mo

These scripts may cost more than they're worth

  • www.csdn.net adds 878ms and costs ~¥43/month
  • Unattributable adds 524ms and costs ~¥26/month
  • csdnimg.cn adds 502ms and costs ~¥25/month
  • csdnimg.cn adds 269ms and costs ~¥13/month
  • csdnimg.cn adds 200ms and costs ~¥10/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.csdn.net takes 878ms 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 524ms 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

csdnimg.cn takes 502ms 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

csdnimg.cn takes 269ms 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

csdnimg.cn takes 200ms 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 csdnimg.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

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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