Performance
· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.49 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.70 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
600 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.386
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.46 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
7.04 s
Page Load Progression
FPage Weight BudgetAction10.5 MB transferred, 226 requestsFIX
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
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.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction3929ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| Unattributable | 801ms | 17ms | 0ms | 3rd |
| https://cloud.tencent.com/ | 648ms | 188ms | 13ms | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/portal/home/assets/vendor.c0318151.js | 610ms | 58ms | 1ms | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/portal/home/assets/index.1c4b425c.js | 375ms | 13ms | 0ms | 3rd |
| https://cdn-go.cn/tam/aegis-sdk/latest/aegis.f.min.js | 264ms | 214ms | 8ms | 3rd |
| https://helix.cloud.tencent.com/web-sdk.js | 235ms | 120ms | 114ms | 3rd |
| data:text/javascript;base64,Cg== | 204ms | 200ms | 0ms | 3rd |
| https://dscache.tencent-cloud.cn/ecache/qcstat/qcloud/qcloudStatApi.js | 192ms | 166ms | 13ms | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/portal/kit/full.1891ff8f9.js | 158ms | 87ms | 17ms | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-940175154&cx=c>m=4e64h1 | 154ms | 138ms | 12ms | 3rd |
Showing top 10 of 14 scripts
FJS BundlesAction21 scripts, 813 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cloudcache.tencent-cloud.com/qcloud/portal/home/assets/vendor.c0318151.js | 297 KB | 194 KB (66%) | ✓ | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/portal/kit/full.1891ff8f9.js | 183 KB | 106 KB (58%) | ✓ | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/ewp/sdk/ewp-sdk.glsqvz3x.js?max_age=31536000 | 121 KB | 86 KB (71%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KV8Z8NK | 134 KB | 66 KB (50%) | ✓ | 3rd |
| https://dscache.tencent-cloud.cn/ecache/qcstat/qcloud/qcloudStatApi.js | 139 KB | 66 KB (48%) | ✓ | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/online-service/andon-online-service.130d03b8.js | 101 KB | 64 KB (63%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-940175154&cx=c>m=4e64h1 | 134 KB | 60 KB (45%) | ✓ | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/main/scripts/release/common/base.2ca1f4943948247d79e9.js?max_age=31536000 | 81 KB | 51 KB (64%) | ✓ | 3rd |
| https://cdn-go.cn/tam/aegis-sdk/latest/aegis.f.min.js | 84 KB | 40 KB (48%) | ✓ | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/main/scripts/release/qccomponent/index.266400a8a592002f4394.js?max_age=31536000 | 74 KB | 31 KB (42%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction226 resources · 10.5 MB · 813 KB savings availableFIX
~812.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 226 resources | 10.5 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction151 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font LoadingNo web fonts (system fonts)PASS
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall226 requests over 6526msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 801ms | 0 KB | — | ¥40/mo | Costly |
cloud.tencent.com cloud.tencent.com | Other | 648ms | 57 KB | — | ¥32/mo | Costly |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 610ms | 297 KB | 66% | ¥30/mo | Costly |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 375ms | 44 KB | 47% | ¥19/mo | Costly |
cdn-go.cn cdn-go.cn | Other | 264ms | 84 KB | 48% | ¥13/mo | Costly |
helix.cloud.tencent.com helix.cloud.tencent.com | Other | 235ms | 0 KB | — | ¥12/mo | Costly |
data:text/javascript;base64,Cg== data:text/javascript;base64,Cg== | Other | 204ms | 0 KB | — | ¥10/mo | Costly |
dscache.tencent-cloud.cn dscache.tencent-cloud.cn | Other | 192ms | 139 KB | 48% | ¥10/mo | Optional |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 158ms | 183 KB | 58% | ¥8/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 154ms | 134 KB | 45% | ¥8/mo | Optional |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 84ms | 101 KB | 63% | ¥4/mo | Optional |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 76ms | 34 KB | — | ¥4/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 69ms | 134 KB | 50% | ¥3/mo | Optional |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 60ms | 74 KB | 42% | ¥3/mo | Optional |
These scripts may cost more than they're worth
- Unattributable adds 801ms and costs ~¥40/month
- cloud.tencent.com adds 648ms and costs ~¥32/month
- cloudcache.tencent-cloud.com adds 610ms and costs ~¥30/month
- cloudcache.tencent-cloud.com adds 375ms and costs ~¥19/month
- cdn-go.cn adds 264ms and costs ~¥13/month
- helix.cloud.tencent.com adds 235ms and costs ~¥12/month
- data:text/javascript;base64,Cg== adds 204ms and costs ~¥10/month
100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
Unattributable takes 801ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cloud.tencent.com takes 648ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cloudcache.tencent-cloud.com takes 610ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
66% of cloudcache.tencent-cloud.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
cloudcache.tencent-cloud.com takes 375ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
cdn-go.cn takes 264ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
helix.cloud.tencent.com takes 235ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
data:text/javascript;base64,Cg== takes 204ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
58% of cloudcache.tencent-cloud.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
63% of cloudcache.tencent-cloud.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev