Performance
· 27 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.
1.24 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
7.77 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
289 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.
4.85 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.
8.32 s
Page Load Progression
DJS Execution CostAction3172ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://beadpattern.net/ | 1080ms | 42ms | 13ms | 1st |
| https://beadpattern.net/_next/static/chunks/8134-bf855aff01638ff7.js | 779ms | 555ms | 20ms | 1st |
| Unattributable | 456ms | 9ms | 0ms | 1st |
| https://beadpattern.net/cdn-cgi/challenge-platform/scripts/jsd/main.js | 274ms | 264ms | 3ms | 1st |
| https://www.googletagmanager.com/gtag/js?id=G-9Y22Q812YF | 252ms | 206ms | 42ms | 3rd |
| https://beadpattern.net/_next/static/chunks/3965-5d38b31e8063e2b6.js | 151ms | 88ms | 62ms | 1st |
| https://beadpattern.net/_next/static/chunks/074a3fa2-cd1bc05d4b7401a7.js | 122ms | 55ms | 13ms | 1st |
| https://beadpattern.net/_next/static/chunks/app/%5Blocale%5D/page-b51199b586a21f07.js | 57ms | 53ms | 2ms | 1st |
CPage Weight BudgetAction1.9 MB transferred, 78 requestsREVIEW
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
CImage OptimizationAction30 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
BJS Bundles27 scripts, 126 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=G-9Y22Q812YF | 185 KB | 76 KB (41%) | ✓ | 3rd |
| https://beadpattern.net/_next/static/chunks/3283-f5f7e0ef13b3e8ce.js | 37 KB | 30 KB (82%) | ✓ | 1st |
| https://beadpattern.net/_next/static/chunks/6816-9d52bb6092e88c43.js | 23 KB | 20 KB (94%) | ✓ | 1st |
| https://beadpattern.net/_next/static/chunks/1797-4193e18b056c3b55.js | 6 KB | — | ✓ | 1st |
| https://beadpattern.net/_next/static/chunks/8575-8bf9b9e498ddab1c.js | 9 KB | — | ✓ | 1st |
| https://beadpattern.net/_next/static/chunks/5675-af6b1a0a6d31bd9f.js | 16 KB | — | ✓ | 1st |
| https://beadpattern.net/_next/static/chunks/webpack-9a08a7aded9f1d20.js | 3 KB | — | ✓ | 1st |
| https://beadpattern.net/_next/static/chunks/254-bda653bda46d02dc.js | 10 KB | — | ✓ | 1st |
| https://beadpattern.net/_next/static/chunks/7334-aabcf9711e33cda1.js | 5 KB | — | ✓ | 1st |
| https://beadpattern.net/_next/static/chunks/5783-c79a451851d39da2.js | 5 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
BMain HTML Cache-ControlCache-Control present but without max-ageREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CPage Weight InventoryAction78 resources · 1.9 MB · 126 KB savings availableREVIEW
~125.6 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 78 resources | 1.9 MiB | ||||||
BHTTP Cachings-maxage=31536000REVIEW
s-maxage=31536000
| Directive | Value | Meaning |
|---|---|---|
| s-maxage | 31536000 | CDN caches for 52 weeks |
A+Third-Party Impact18% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading4 fonts (159 KB)PASS
Web fonts
4
159 KB total
Render-blocking
0
of 4
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 ~52 KB and ~104 ms
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+Compression AlgorithmMain response uses brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
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
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Network Waterfall78 requests over 4496msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Google Tag Manager www.googletagmanager.com | Tag Manager | 252ms | 185 KB | 41% | $3/mo | Costly |
These scripts may cost more than they're worth
- Google Tag Manager adds 252ms and costs ~$3/month
Google Tag Manager takes 252ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-07-28 — 2026-08-24)
LCP (p75)
2431 ms
77% good
INP (p75)
194 ms
77% good
CLS (p75)
0.030
89% good
FCP (p75)
2297 ms
TTFB (p75)
1597 ms
Image Optimization1 images, 2 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
1
Total Size
2 KB