Performance
· 25 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.
1.00 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
4.53 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
156 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.001
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
1.00 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.
4.74 s
Page Load Progression
DJS Execution CostAction2412ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://askmatchbox.com/_next/static/chunks/064-j_re08xbz.js | 1348ms | 1256ms | 24ms | 1st |
| https://askmatchbox.com/ | 621ms | 16ms | 14ms | 1st |
| Unattributable | 383ms | 11ms | 0ms | 1st |
| https://askmatchbox.com/_next/static/chunks/141n2lq4toqm7.js | 61ms | 40ms | 21ms | 1st |
BJS Bundles20 scripts, 113 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://askmatchbox.com/_next/static/chunks/0sod64ihkiyxq.js | 61 KB | 50 KB (82%) | ✓ | 1st |
| https://askmatchbox.com/_next/static/chunks/141n2lq4toqm7.js | 66 KB | 38 KB (58%) | ✓ | 1st |
| https://askmatchbox.com/_next/static/chunks/064-j_re08xbz.js | 70 KB | 25 KB (36%) | ✓ | 1st |
| https://askmatchbox.com/_next/static/chunks/03~-an--35cpn.js | 4 KB | — | ✓ | 1st |
| https://askmatchbox.com/_next/static/chunks/0g42b1kzq~sn_.js | 10 KB | — | ✓ | 1st |
| https://askmatchbox.com/_next/static/chunks/turbopack-0su0d9af8q5ko.js | 4 KB | — | ✓ | 1st |
| https://askmatchbox.com/_next/static/chunks/0s~36~oevtz~3.js | 1 KB | — | ✓ | 1st |
| https://askmatchbox.com/_next/static/chunks/05iyf-hvkd2.m.js | 37 KB | — | ✓ | 1st |
| https://askmatchbox.com/_next/static/chunks/01xlw8hd842-c.js | 2 KB | — | ✓ | 1st |
| https://askmatchbox.com/_next/static/chunks/0d3shmwh5_nmn.js | 13 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
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
BMain HTML Cache-ControlCache-Control present but without max-ageREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
BHTTP Cachings-maxage=3600, stale-while-revalidate=31532400REVIEW
s-maxage=3600, stale-while-revalidate=31532400
| Directive | Value | Meaning |
|---|---|---|
| s-maxage | 3600 | CDN caches for 1 hour |
| stale-while-revalidate | 31532400 | Serve stale for 52 weeks while fetching fresh |
APage Weight Budget1003 KB transferred, 42 requestsPASS
A+Third-Party Impact1% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization11 images, 0 KB saveablePASS
A+Font Loading4 fonts (193 KB)PASS
Web fonts
4
193 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
AResource Hints5 hints, 0 missing preconnectsPASS
Current Resource Hints
5 resource hints configured
Fonts are always fetched as crossorigin=anonymous; a preload without the attribute creates a different cache key, so the browser refetches when the actual font request happens. Sample: /_next/static/media/03bda585a99c6450-s.p.0zzh68k1~whtc.woff2, /_next/static/media/3c7c6164b2587822-s.p.0duriy8536ewt.woff2, /_next/static/media/70bc3e132a0a741e-s.p.1409xf.ylxg8g.woff2 (+1 more). Add `crossorigin` (or `crossorigin="anonymous"`) to each preload.
Performance issues directly impact user engagement and conversion rates.
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Page Weight Inventory42 resources · 1003 KB · 113 KB savings availablePASS
~113.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 42 resources | 1003.3 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
Network Waterfall42 requests over 748msINFO
Image Optimization14 images, 683 KB total, 242 KB wastedINFO
Image Optimization Audit
Total Images
14
Total Size
683 KB
Oversized
6
Wasted
242 KB