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.
582 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.48 s
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.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
584 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.
1.48 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 |
BJS Execution Cost596ms total JS executionREVIEW
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://robuxkinun.com/ | 307ms | 6ms | 8ms | 1st |
| https://robuxkinun.com/_next/static/chunks/08f9fdaa521f5164.js | 201ms | 165ms | 5ms | 1st |
| Unattributable | 88ms | 9ms | 0ms | 1st |
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
A+Page Weight Budget628 KB transferred, 51 requestsPASS
A+Third-Party ImpactNo third-party resourcesPASS
A+Text CompressionAll text resources are compressedPASS
A+Image Optimization15 images, 0 KB saveablePASS
A+Font Loading3 fonts (150 KB)PASS
Web fonts
3
150 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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 ~53 KB and ~106 ms
A+JS Bundles22 scripts, 33 KB unusedPASS
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://robuxkinun.com/_next/static/chunks/a3cfafc0b92e4f82.js | 47 KB | 33 KB (72%) | ✓ | 1st |
| https://robuxkinun.com/_next/static/chunks/c275d85b7ec01428.js | 10 KB | — | ✓ | 1st |
| https://robuxkinun.com/_next/static/chunks/62f7f0054c8103b7.js | 16 KB | — | ✓ | 1st |
| https://robuxkinun.com/_next/static/chunks/08f9fdaa521f5164.js | 59 KB | — | ✓ | 1st |
| https://robuxkinun.com/_next/static/chunks/c20516c263ef3a09.js | 18 KB | — | ✓ | 1st |
| https://robuxkinun.com/_next/static/chunks/522518d740397639.js | 9 KB | — | ✓ | 1st |
| https://robuxkinun.com/_next/static/chunks/turbopack-4769d7ddfb748f3d.js | 4 KB | — | ✓ | 1st |
| https://robuxkinun.com/_next/static/chunks/ff1a16fafef87110.js | 1 KB | — | ✓ | 1st |
| https://robuxkinun.com/_next/static/chunks/eab45d022c978f11.js | 8 KB | — | ✓ | 1st |
| https://robuxkinun.com/_next/static/chunks/e4ef67982dea68a6.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
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 Response Intelligence2 server-response signal(s) detectedPASS
A+Page Weight Inventory51 resources · 628 KB · 33 KB savings availablePASS
~33.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 51 resources | 628.3 KiB | ||||||
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 Waterfall51 requests over 774msINFO
Image Optimization19 images, 69 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
19
Total Size
69 KB