Performance
· 26 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.
1.12 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.81 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
187 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.032
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
2.39 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.
3.28 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 CostAction1901ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://btcminex.com/_next/static/chunks/2khxl0v1q4i6n.js | 789ms | 698ms | 40ms | 1st |
| https://btcminex.com/ | 500ms | 15ms | 7ms | 1st |
| Unattributable | 295ms | 25ms | 0ms | 1st |
| https://btcminex.com/_next/static/chunks/1zj_tkyesqjcr.js | 151ms | 120ms | 13ms | 1st |
| https://btcminex.com/_next/static/chunks/3sd-tblx53csz.js | 114ms | 89ms | 24ms | 1st |
| https://btcminex.com/_next/static/chunks/339zq_tsbuphk.js | 50ms | 18ms | 6ms | 1st |
BJS Bundles10 scripts, 81 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://btcminex.com/_next/static/chunks/3sd-tblx53csz.js | 66 KB | 55 KB (82%) | ✓ | 1st |
| https://btcminex.com/_next/static/chunks/2khxl0v1q4i6n.js | 71 KB | 26 KB (37%) | ✓ | 1st |
| https://btcminex.com/_next/static/chunks/1x6obpmlu1_c2.js | 2 KB | — | ✓ | 1st |
| https://btcminex.com/_next/static/chunks/1-nqmp1rl8kqt.js | 9 KB | — | ✓ | 1st |
| https://btcminex.com/_next/static/chunks/1zj_tkyesqjcr.js | 44 KB | — | ✓ | 1st |
| https://btcminex.com/_next/static/chunks/turbopack-3-ry682tkyiqk.js | 4 KB | — | ✓ | 1st |
| https://btcminex.com/_next/static/chunks/0z_3jniom1p9u.js | 4 KB | — | ✓ | 1st |
| https://btcminex.com/_next/static/chunks/339zq_tsbuphk.js | 20 KB | — | ✓ | 1st |
| https://btcminex.com/_next/static/chunks/1de8cc-ye8ywp.js | 6 KB | — | ✓ | 1st |
| https://btcminex.com/_next/static/chunks/29017sj3i6d24.js | 4 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
BDocument CompressionDocument 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
A+Page Weight Budget446 KB transferred, 34 requestsPASS
A+Third-Party ImpactNo third-party resourcesPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization3 images, 0 KB saveablePASS
A+Font LoadingNo web fonts (system fonts)PASS
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints1 hints, 0 missing preconnectsPASS
Current Resource Hints
1 resource hints configured
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML uses no-store -- correct for sensitive/dynamic contentPASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Page Weight Inventory34 resources · 446 KB · 81 KB savings availablePASS
~80.7 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 34 resources | 446.2 KiB | ||||||
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
AJavaScript Blocking1 JS blocking issue(s) detectedPASS
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
Asset CompressionNo text asset hosts to measureINFO
Network Waterfall34 requests over 2279msINFO
Image Optimization3 images, 430 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
3
Total Size
430 KB