Performance
· 22 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.
648 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.67 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
1 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.004
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
745 ms
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
1.68 s
Page Load Progression
DHTTP CachingActionno-store (uncacheable)FIX
private, no-cache, no-store, max-age=0, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| private | — | Only browser cache, not CDN/proxy |
| no-cache | — | Cache but always revalidate first |
| no-store | — | Never cache this response |
| max-age | 0 | Cache for 0 seconds |
| must-revalidate | — | Must recheck with server after expiry |
CJS Execution CostAction1111ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://fengshuibedroom.app/ | 566ms | 9ms | 16ms | 1st |
| https://fengshuibedroom.app/_next/static/chunks/0d65ce108889130a.js | 358ms | 333ms | 8ms | 1st |
| Unattributable | 134ms | 11ms | 0ms | 1st |
| https://fengshuibedroom.app/_next/static/chunks/cd4b7bbe998b5318.js | 52ms | 36ms | 8ms | 1st |
BJS Bundles35 scripts, 128 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://fengshuibedroom.app/_next/static/chunks/5d9b434b40d548d9.js | 69 KB | 56 KB (81%) | ✓ | 1st |
| https://fengshuibedroom.app/_next/static/chunks/b9b9bb0b2d1bc7a4.js | 59 KB | 49 KB (90%) | ✓ | 1st |
| https://fengshuibedroom.app/_next/static/chunks/0d65ce108889130a.js | 71 KB | 22 KB (32%) | ✓ | 1st |
| https://fengshuibedroom.app/_next/static/chunks/266af6834a334434.js | 9 KB | — | ✓ | 1st |
| https://fengshuibedroom.app/_next/static/chunks/3c1e79b0ecb51896.js | 16 KB | — | ✓ | 1st |
| https://fengshuibedroom.app/_next/static/chunks/turbopack-96eda4f6d619ce7f.js | 5 KB | — | ✓ | 1st |
| https://fengshuibedroom.app/_next/static/chunks/48da1cbbd4d1a93d.js | 1 KB | — | ✓ | 1st |
| https://fengshuibedroom.app/_next/static/chunks/e767791ab1bb9364.js | 8 KB | — | ✓ | 1st |
| https://fengshuibedroom.app/_next/static/chunks/8f865f3963f525d3.js | 3 KB | — | ✓ | 1st |
| https://fengshuibedroom.app/_next/static/chunks/fada666e93fb7ec5.js | 10 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
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
APage Weight Budget1.0 MB transferred, 67 requestsPASS
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
A+Third-Party Impact1% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization3 images, 0 KB saveablePASS
A+Font Loading4 fonts (117 KB)PASS
Web fonts
4
117 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
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)
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+Document CompressionDocument response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML uses no-store -- correct for sensitive/dynamic contentPASS
A+Server-Timing Observability3 Server-Timing entries advertisedPASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Page Weight Inventory67 resources · 1.0 MB · 128 KB savings availablePASS
~128.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 67 resources | 1.0 MiB | ||||||
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall67 requests over 8284msINFO
Image Optimization9 images, 234 KB total, 94 KB wastedINFO
Image Optimization Audit
Total Images
9
Total Size
234 KB
Oversized
2
Wasted
94 KB