https://mhjys.qingtiankjysz.cfd/#/
Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
86
GRADE
B
FIX
1
REVIEW
10
PASS
12
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
58
39
96
73
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
4.01 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
10.11 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
182 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.045
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.91 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.
10.12 s
Page Load Progression
780 ms 1.6 s
2.3 s
3.1 s
3.9 s 4.7 s 5.5 s
6.2 sChecks
2612 PASS 10 REVIEW 1 FIX
DHTTP CachingActionNo cache headersFIX
HTTP Caching
ActionNo cache headers
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.
CPage Weight BudgetAction2.0 MB transferred, 80 requestsREVIEW
Page Weight Budget
Action2.0 MB transferred, 80 requests
2.0 MB transferred, 80 requests
Info::
Page weighs 3.9 MB (2.0 MB transferred)
Info::
Fonts are 1007 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 1007 KB
Warning::
JavaScript is 536 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 536 KB
Info::
80 HTTP requests
Info::
Estimated 0.42 g CO2 per page load
2.0 MB transferred
80 requests
0.42 g CO2 per page load
Fonts 1006.6 KiB 49%
JavaScript 536.4 KiB 26%
Images 433.7 KiB 21%
CSS 78.9 KiB 4%
Other 7.8 KiB 0%
HTML 983 B 0%
Other 611 B 0%
0 2.4 MB 4.9 MB
Approaching limit
Subset fonts to include only used characters, or switch to system font stacks.
Why this matters
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Why this matters
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
BImage Optimization27 images, 0 KB saveableREVIEW
Image Optimization
27 images, 0 KB saveable
27 images, 0 KB saveable
Info::
All images are well-optimized
27 images 434 KB
0 oversized -0 KB
24 legacy format
0 missing dimensions CLS risk
CJS Execution CostAction1569ms total JS executionREVIEW
JS Execution Cost
Action1569ms total JS execution
1569ms total JS execution
Warning::
https://mhjys.qingtiankjysz.cfd/assets/index-B2wNG...: 896ms CPU time
Warning::
Unattributable: 398ms CPU time
Warning::
https://mhjys.qingtiankjysz.cfd/: 276ms CPU time
Info::
Third-party scripts: 398ms (25% of total)
Main Thread Breakdown
Script Evaluation 39% Other 36% Style & Layout 19% Rendering 3%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://mhjys.qingtiankjysz.cfd/assets/index-B2wNGtfx.js | 896ms | 632ms | 4ms | 1st |
| Unattributable | 398ms | 5ms | 0ms | 3rd |
| https://mhjys.qingtiankjysz.cfd/ | 276ms | 7ms | 1ms | 1st |
BJS Bundles23 scripts, 77 KB unusedREVIEW
JS Bundles
23 scripts, 77 KB unused
23 scripts, 77 KB unused
Warning::
https://mhjys.qingtiankjysz.cfd/assets/index-B2wNG...: 77 KB unused (17%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 77 KB
77 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://mhjys.qingtiankjysz.cfd/assets/index-B2wNGtfx.js | 499 KB | 77 KB (17%) | ✓ | 1st |
| https://mhjys.qingtiankjysz.cfd/assets/pages-newindex-newindex.Dl7po1pU.js | 13 KB | — | ✓ | 1st |
| https://mhjys.qingtiankjysz.cfd/assets/fui-avatar.BnBMSd8v.js | 1 KB | — | ✓ | 1st |
| https://mhjys.qingtiankjysz.cfd/assets/_plugin-vue_export-helper.BCo6x5W8.js | 0 KB | — | ✓ | 1st |
| https://mhjys.qingtiankjysz.cfd/assets/uni-app.es.DXc4U9Jm.js | 0 KB | — | ✓ | 1st |
| https://mhjys.qingtiankjysz.cfd/assets/fui-nav-bar.CQ1BQdTK.js | 1 KB | — | ✓ | 1st |
| https://mhjys.qingtiankjysz.cfd/assets/fui-icon.CQAJe6-N.js | 2 KB | — | ✓ | 1st |
| https://mhjys.qingtiankjysz.cfd/assets/fui-button.BVzha-rf.js | 2 KB | — | ✓ | 1st |
| https://mhjys.qingtiankjysz.cfd/assets/fui-tabs.DkOa84GF.js | 2 KB | — | ✓ | 1st |
| https://mhjys.qingtiankjysz.cfd/assets/uni-drawer.C9z9ox-_.js | 1 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
HTTP/3 (QUIC)
HTTP/3 not advertised
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
CCompression AlgorithmActionMain response served uncompressedREVIEW
Compression Algorithm
ActionMain response served uncompressed
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
Main HTML Cache-Control
No Cache-Control header on main HTML response
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
CPage Weight InventoryAction80 resources · 2.0 MB · 77 KB savings availableREVIEW
Page Weight Inventory
Action80 resources · 2.0 MB · 77 KB savings available
80 resources · 2.0 MB · 77 KB savings available
Warning::
Page weight 2.0 MB exceeds 1 MB target by 1.0 MB
Got: 2.0 MB Expected: ≤ 1 MB
Info::
~77 KB of savings available
Info::
4 third-party resources (0% of weight)
Info::
3 resources over 200KB
80 resources · 2.0 MiB · 4 third-party 1.0 MiB over 1MB target
Font 49% · 1006.6 KiB
JavaScript 26% · 536.4 KiB
Image 21% · 433.7 KiB
CSS 4% · 78.9 KiB
Other 0% · 7.8 KiB
Document 0% · 1.6 KiB
~77.2 KiB of savings available
Remove unused JavaScript: 77.2 KiB
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 80 resources | 2.0 MiB | ||||||
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
ActionWhether the site is served from green-energy infrastructure
Green Hosting
No green hosting detected
A+Third-Party Impact0% third-party, 0 ms blockingPASS
Third-Party Impact
0% third-party, 0 ms blocking
0% third-party, 0 ms blocking
Info::
Third-party code accounts for 0% of page weight (420 B of 2.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+Font Loading3 fonts (1007 KB)PASS
Font Loading
3 fonts (1007 KB)
3 fonts (1007 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
3
1007 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
Transfer FOIT (block) FOUT (swap)
HarmonyOS_Sans_Regular-... ttf swap
Size 144 KB
Load time 280 ms
Start 2.3 s
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
HarmonyOS_Sans_SC_Mediu... ttf swap
Size 824 KB
Load time 444 ms
Start 2.6 s
Risk FOUT — text flashes from fallback to web font
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
fui-icon-D7orQT4U.ttf ttf swap
Size 39 KB
Load time 440 ms
Start 2.6 s
Risk FOUT — text flashes from fallback to web font
- 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 ~786 KB and ~1572 ms
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Server Response Intelligence1 server-response signal(s) detectedPASS
Server Response Intelligence
1 server-response signal(s) detected
1 server-response signal(s) detected
Info::
Both `ETag` and `Last-Modified` present -- efficient revalidation supported
The page returns both `ETag` (content hash) and `Last-Modified` (timestamp) headers. Browsers can issue conditional GETs with `If-None-Match` or `If-Modified-Since`; the server returns 304 Not Modified for unchanged content, saving bandwidth. ETag is the more reliable of the two (timestamps fail in DST transitions and clock skew).
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
Render-Blocking Resources
No render-blocking resources detected
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+Third-Party ResourcesNo third-party resources detectedPASS
Third-Party Resources
No third-party resources detected
No third-party resources detected
AJavaScript Blocking1 JS blocking issue(s) detectedPASS
JavaScript Blocking
1 JS blocking issue(s) detected
1 JS blocking issue(s) detected
Warning::
Page uses document.write() -- disables Chrome's preload scanner
`document.write()` blocks all parallel resource discovery while it executes. Chrome explicitly disables the preload scanner on connections it judges slow when document.write is detected, serializing the entire subtree load. Almost always third-party ad / analytics legacy code; replacing with createElement + appendChild (or refusing to integrate the offending vendor) recovers significant load-time on mobile.
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
CSS Performance Depth
1 CSS depth issue(s) detected
1 CSS depth issue(s) detected
Warning::
14 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
Network Waterfall80 requests over 5235msINFO
Network Waterfall
80 requests over 5235ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
25% of JavaScript execution is third-party
First-party Third-party 398ms · 0KB · $5/mo
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Unattributable Unattributable | Other | 398ms | 0 KB | — | $5/mo | Costly |
Unattributable
Other
Execution 398ms
Transfer 0 KB
Monthly Cost $5/mo
These scripts may cost more than they're worth
- Unattributable adds 398ms and costs ~$5/month
Unattributable takes 398ms 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
Image Optimization23 images, 429 KB total, 402 KB wastedINFO
Image Optimization
23 images, 429 KB total, 402 KB wasted
Image Optimization Audit
Total Images
23
Total Size
429 KB
Oversized
20
Wasted
402 KB
23 missing alt text 23 missing dimensions 9 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.