Performance
· 17 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.
8.55 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
12.25 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.96 s
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.
8.55 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.
20.10 s
Page Load Progression
FPage Weight BudgetAction4.2 MB transferred, 178 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
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 CostAction12076ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://cloudcache.tencent-cloud.com/qcloud/portal/home/assets/vendor.c0318151.js | 3853ms | 353ms | 6ms | 3rd |
| Unattributable | 1860ms | 31ms | 0ms | 3rd |
| https://cloud.tencent.com/ | 1510ms | 719ms | 49ms | 3rd |
| data:text/javascript;base64,Cg== | 866ms | 819ms | 0ms | 3rd |
| https://helix.cloud.tencent.com/web-sdk.js | 705ms | 340ms | 364ms | 3rd |
| https://cdn-go.cn/tam/aegis-sdk/latest/aegis.f.min.js | 699ms | 580ms | 42ms | 3rd |
| https://dscache.tencent-cloud.cn/ecache/qcstat/qcloud/qcloudStatApi.js | 606ms | 521ms | 47ms | 3rd |
| https://www.googletagmanager.com/gtag/destination?id=AW-940175154&cx=c>m=4e64h1 | 506ms | 391ms | 112ms | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/portal/kit/full.1891ff8f9.js | 500ms | 327ms | 70ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-KV8Z8NK | 235ms | 194ms | 39ms | 3rd |
Showing top 10 of 16 scripts
FJS BundlesAction19 scripts, 752 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 | 192 KB (65%) | ✓ | 3rd |
| https://cloudcache.tencent-cloud.com/qcloud/portal/kit/full.1891ff8f9.js | 183 KB | 111 KB (61%) | ✓ | 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://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 | 41 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 |
| https://cloudcache.tencent-cloud.com/qcloud/main/scripts/release/common/deps.6da264e652ff7f476e8c.js?max_age=31536000 | 39 KB | 28 KB (71%) | ✓ | 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 InventoryAction178 resources · 4.2 MB · 752 KB savings availableFIX
~752.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 178 resources | 4.2 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction110 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
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 Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall178 requests over 5358msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 3853ms | 297 KB | 65% | ¥190/mo | Costly |
Unattributable Unattributable | Other | 1860ms | 0 KB | — | ¥92/mo | Costly |
cloud.tencent.com cloud.tencent.com | Other | 1510ms | 57 KB | — | ¥75/mo | Costly |
data:text/javascript;base64,Cg== data:text/javascript;base64,Cg== | Other | 866ms | 0 KB | — | ¥43/mo | Costly |
helix.cloud.tencent.com helix.cloud.tencent.com | Other | 705ms | 0 KB | — | ¥35/mo | Costly |
cdn-go.cn cdn-go.cn | Other | 699ms | 84 KB | 48% | ¥34/mo | Costly |
dscache.tencent-cloud.cn dscache.tencent-cloud.cn | Other | 606ms | 139 KB | 48% | ¥30/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 506ms | 134 KB | 45% | ¥25/mo | Costly |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 500ms | 183 KB | 61% | ¥25/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 235ms | 134 KB | 50% | ¥12/mo | Costly |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 213ms | 81 KB | 64% | ¥11/mo | Costly |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 156ms | 121 KB | 71% | ¥8/mo | Optional |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 117ms | 74 KB | 42% | ¥6/mo | Optional |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 103ms | 34 KB | — | ¥5/mo | Optional |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 91ms | 39 KB | 71% | ¥4/mo | Optional |
cloudcache.tencent-cloud.com cloudcache.tencent-cloud.com | Other | 55ms | 44 KB | 47% | ¥3/mo | Optional |
These scripts may cost more than they're worth
- cloudcache.tencent-cloud.com adds 3853ms and costs ~¥190/month
- Unattributable adds 1860ms and costs ~¥92/month
- cloud.tencent.com adds 1510ms and costs ~¥75/month
- data:text/javascript;base64,Cg== adds 866ms and costs ~¥43/month
- helix.cloud.tencent.com adds 705ms and costs ~¥35/month
- cdn-go.cn adds 699ms and costs ~¥34/month
- dscache.tencent-cloud.cn adds 606ms and costs ~¥30/month
- Google Tag Manager adds 506ms and costs ~¥25/month
- cloudcache.tencent-cloud.com adds 500ms and costs ~¥25/month
- Google Tag Manager adds 235ms and costs ~¥12/month
- cloudcache.tencent-cloud.com adds 213ms and costs ~¥11/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
cloudcache.tencent-cloud.com takes 3853ms 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
65% 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
Unattributable takes 1860ms 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 1510ms 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 866ms 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 705ms 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 699ms 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
dscache.tencent-cloud.cn takes 606ms 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
Google Tag Manager takes 506ms 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 500ms 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
61% 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
Google Tag Manager 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
cloudcache.tencent-cloud.com takes 213ms 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
64% 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
71% 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
71% 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