Performance
· 21 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.
2.07 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.49 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
65 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.
5.25 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.
3.54 s
Page Load Progression
DPage Weight BudgetAction2.2 MB transferred, 83 requestsFIX
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
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
DJS BundlesAction24 scripts, 351 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://qymall.pbsp.cn/assets/index-BzXGFtTG.js | 620 KB | 244 KB (40%) | ✓ | 1st |
| https://qymall.pbsp.cn/assets/src-pages-login-index.DIV0c0JD.js | 156 KB | 107 KB (69%) | ✓ | 1st |
| https://qymall.pbsp.cn/assets/product.Cp8NoC51.js | 1 KB | — | ✓ | 1st |
| https://qymall.pbsp.cn/assets/SmartReserveCard.6g5-XMuI.js | 4 KB | — | ✓ | 1st |
| https://qymall.pbsp.cn/assets/uv-transition.Iis6Qlhm.js | 2 KB | — | ✓ | 1st |
| https://qymall.pbsp.cn/assets/uv-modal.DR_4G3KA.js | 2 KB | — | ✓ | 1st |
| https://qymall.pbsp.cn/assets/uv-line.CiW_k3-p.js | 1 KB | — | ✓ | 1st |
| https://qymall.pbsp.cn/assets/uv-loading-icon.BTVcJQ63.js | 1 KB | — | ✓ | 1st |
| https://qymall.pbsp.cn/assets/uv-popup.D5PKidMm.js | 3 KB | — | ✓ | 1st |
| https://qymall.pbsp.cn/assets/uv-status-bar.BCPjv0ym.js | 1 KB | — | ✓ | 1st |
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
DPage Weight InventoryAction83 resources · 2.2 MB · 351 KB savings availableFIX
~351.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 83 resources | 2.2 MiB | ||||||
BThird-Party Impact57% third-party, 0 ms blockingREVIEW
BImage Optimization28 images, 0 KB saveableREVIEW
BJS Execution Cost933ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://qymall.pbsp.cn/assets/index-BzXGFtTG.js | 635ms | 565ms | 3ms | 1st |
| Unattributable | 212ms | 2ms | 0ms | 1st |
| https://qymall.pbsp.cn/ | 87ms | 4ms | 1ms | 1st |
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachingno-cacheREVIEW
no-cache
| Directive | Value | Meaning |
|---|---|---|
| no-cache | — | Cache but always revalidate first |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (93 KB)PASS
Web fonts
2
93 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
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)
Fixing the unchecked items could save ~28 KB and ~56 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML uses no-cache -- safe revalidate-on-request policyPASS
AServer Response Intelligence2 server-response signal(s) detectedPASS
Network Waterfall83 requests over 6770msINFO
Image Optimization4 images, 0 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
4
Total Size
0 KB
Oversized
1