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.
292 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
952 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.002
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
367 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.
958 ms
Page Load Progression
BJS Execution Cost668ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://askmatchbox.com/_next/static/chunks/064-j_re08xbz.js | 354ms | 332ms | 4ms | 1st |
| https://askmatchbox.com/ | 180ms | 3ms | 3ms | 1st |
| Unattributable | 81ms | 6ms | 0ms | 1st |
| https://askmatchbox.com/_next/static/chunks/05iyf-hvkd2.m.js | 52ms | 36ms | 3ms | 1st |
BJS Bundles22 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 Budget999 KB transferred, 67 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
A+Resource HintsNo optimization neededPASS
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 Inventory67 resources · 999 KB · 113 KB savings availablePASS
~113.1 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 67 resources | 999.0 KiB | ||||||
Network Waterfall67 requests over 912msINFO
Image Optimization14 images, 683 KB total, 242 KB wastedINFO
Image Optimization Audit
Total Images
14
Total Size
683 KB
Oversized
6
Wasted
242 KB