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Performance

· 27 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
88
GRADE
B
FIX
1
REVIEW
7
PASS
15
INFO
4

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
66
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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

629 ms
1.3 s
1.9 s
2.5 s
3.1 s
3.8 s
4.4 s
5.0 s
Checks
27
15 PASS 7 REVIEW 1 FIX
D
JS Execution Cost
Action
3172ms total JS execution
FIX
3172ms total JS execution
Warning::
https://beadpattern.net/: 1080ms CPU time
Warning::
https://beadpattern.net/_next/static/chunks/8134-b...: 779ms CPU time
Warning::
Unattributable: 456ms CPU time
Warning::
https://beadpattern.net/cdn-cgi/challenge-platform...: 274ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-9Y22...: 252ms CPU time
Info::
Third-party scripts: 252ms (8% of total)

Main Thread Breakdown

Script Evaluation 40% Other 24% Style & Layout 20% Script Parsing & Compilation 7% Rendering 7%
ScriptTotalScriptingParse/CompileParty
https://beadpattern.net/1080ms42ms13ms1st
https://beadpattern.net/_next/static/chunks/8134-bf855aff01638ff7.js779ms555ms20ms1st
Unattributable456ms9ms0ms1st
https://beadpattern.net/cdn-cgi/challenge-platform/scripts/jsd/main.js274ms264ms3ms1st
https://www.googletagmanager.com/gtag/js?id=G-9Y22Q812YF252ms206ms42ms3rd
https://beadpattern.net/_next/static/chunks/3965-5d38b31e8063e2b6.js151ms88ms62ms1st
https://beadpattern.net/_next/static/chunks/074a3fa2-cd1bc05d4b7401a7.js122ms55ms13ms1st
https://beadpattern.net/_next/static/chunks/app/%5Blocale%5D/page-b51199b586a21f07.js57ms53ms2ms1st
C
Page Weight Budget
Action
1.9 MB transferred, 78 requests
REVIEW
1.9 MB transferred, 78 requests
Info::
Page weighs 4.3 MB (1.9 MB transferred)
Warning::
JavaScript is 692 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 692 KB
Info::
78 HTTP requests
Info::
Estimated 0.40 g CO2 per page load
1.9 MB / 2.4 MB budget
1.9 MB transferred
78 requests
0.40 g CO2 per page load
Images 1020.4 KiB 52%
JavaScript 692.1 KiB 35%
Fonts 159.2 KiB 8%
Other 33.9 KiB 2%
HTML 27.8 KiB 1%
CSS 25.1 KiB 1%
Other 5.3 KiB 0%
Other 2.1 KiB 0%
Other 1.9 KiB 0%
Other 1.4 KiB 0%
Other 0 B 0%
0 2.4 MB 4.9 MB
Approaching limit

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

C
Image Optimization
Action
30 images, 0 KB saveable
REVIEW
30 images, 0 KB saveable
Warning::
https://cdn.simpleicons.org/mastercard/EB001B is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.simpleicons.org/americanexpress/2E77BC is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.simpleicons.org/jcb/0B4EA2 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.simpleicons.org/applepay/000000 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
30 images 1020 KB
0 oversized -0 KB
8 legacy format
4 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
JS Bundles
27 scripts, 126 KB unused
REVIEW
27 scripts, 126 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-9Y22...: 76 KB unused (41%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://beadpattern.net/_next/static/chunks/3283-f...: 30 KB unused (82%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://beadpattern.net/_next/static/chunks/6816-9...: 20 KB unused (94%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 126 KB
126 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-9Y22Q812YF185 KB76 KB (41%)✓3rd
https://beadpattern.net/_next/static/chunks/3283-f5f7e0ef13b3e8ce.js37 KB30 KB (82%)✓1st
https://beadpattern.net/_next/static/chunks/6816-9d52bb6092e88c43.js23 KB20 KB (94%)✓1st
https://beadpattern.net/_next/static/chunks/1797-4193e18b056c3b55.js6 KB—✓1st
https://beadpattern.net/_next/static/chunks/8575-8bf9b9e498ddab1c.js9 KB—✓1st
https://beadpattern.net/_next/static/chunks/5675-af6b1a0a6d31bd9f.js16 KB—✓1st
https://beadpattern.net/_next/static/chunks/webpack-9a08a7aded9f1d20.js3 KB—✓1st
https://beadpattern.net/_next/static/chunks/254-bda653bda46d02dc.js10 KB—✓1st
https://beadpattern.net/_next/static/chunks/7334-aabcf9711e33cda1.js5 KB—✓1st
https://beadpattern.net/_next/static/chunks/5783-c79a451851d39da2.js5 KB—✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

B
Main HTML Cache-Control
Cache-Control present but without max-age
REVIEW
Cache-Control present but without max-age
Info::
Main HTML Cache-Control has no max-age: s-maxage=31536000
Got: s-maxage=31536000
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
C
Page Weight Inventory
Action
78 resources · 1.9 MB · 126 KB savings available
REVIEW
78 resources · 1.9 MB · 126 KB savings available
Warning::
Page weight 1.9 MB exceeds 1 MB target by 945 KB
Got: 1.9 MB Expected: ≤ 1 MB
Info::
~126 KB of savings available
Info::
24 third-party resources (18% of weight)
Info::
1 resources over 200KB
78 resources · 1.9 MiB · 24 third-party 945.2 KiB over 1MB target
Image 54% · 1.0 MiB
JavaScript 35% · 692.1 KiB
Font 8% · 159.2 KiB
Document 2% · 32.6 KiB
CSS 1% · 25.1 KiB
Other 0% · 6.6 KiB

~125.6 KiB of savings available

Remove unused JavaScript: 125.6 KiB
B
HTTP Caching
s-maxage=31536000
REVIEW
s-maxage=31536000
Info::
Cache-Control header is set
Got: s-maxage=31536000
Info::
CDN TTL: 52 weeks (s-maxage=31536000)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

s-maxage=31536000

DirectiveValueMeaning
s-maxage31536000CDN caches for 52 weeks
A+
Third-Party Impact
18% third-party, 0 ms blocking
PASS
18% third-party, 0 ms blocking
Info::
Third-party code accounts for 18% of page weight (349.7 KiB of 1.9 MiB)
Info::
Third-party blocking time is low (0 ms)
82%
18%
First-party Third-party
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
4 fonts (159 KB)
PASS
4 fonts (159 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

159 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 1.2 s LCP 7.8 shttps://beadpattern.net/_next/static/media/22a5144ee8d83bca-s.p.woff222a5144ee8d83bca-s.p.woff2 https://beadpattern.net/_next/static/media/22a5144ee8d83bca-s.p.woff2 — 29.0 KiB — 49 ms — font-display: swaphttps://beadpattern.net/_next/static/media/7d4881bb7e1bf84d-s.p.woff27d4881bb7e1bf84d-s.p.woff2 https://beadpattern.net/_next/static/media/7d4881bb7e1bf84d-s.p.woff2 — 23.0 KiB — 70 ms — font-display: swaphttps://beadpattern.net/_next/static/media/f4c2f440cf73b155-s.p.woff2f4c2f440cf73b155-s.p.woff2 https://beadpattern.net/_next/static/media/f4c2f440cf73b155-s.p.woff2 — 103.3 KiB — 83 ms — font-display: swaphttps://beadpattern.net/_next/static/media/cd21efaca8026c00-s.woff2cd21efaca8026c00-s.woff2 https://beadpattern.net/_next/static/media/cd21efaca8026c00-s.woff2 — 3.9 KiB — 32 ms — font-display: swap
22a5144ee8d83bca-s.p.woff2 woff2 swap
Size 29 KB
Load time 49 ms
Start 276 ms
Risk FOUT — text flashes from fallback to web font
7d4881bb7e1bf84d-s.p.woff2 woff2 swap
Size 23 KB
Load time 70 ms
Start 276 ms
Risk FOUT — text flashes from fallback to web font
f4c2f440cf73b155-s.p.woff2 woff2 swap
Size 103 KB
Load time 83 ms
Start 276 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
cd21efaca8026c00-s.woff2 woff2 swap
Size 4 KB
Load time 32 ms
Start 461 ms
Risk FOUT — text flashes from fallback to web font
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 Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
Compression Algorithm
Main response uses brotli
PASS
Main response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: RSC, Next-Router-State-Tree, Next-Router-Prefetch, Next-Router-Segment-Prefetch
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A
JavaScript Blocking
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
1 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: Cloudflare

Network Waterfall
78 requests over 4496ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s 8.0 s FCP 1.2 s LCP 7.8 shttps://beadpattern.net// https://beadpattern.net/ — 200 — 27.8 KiB — 263 ms — h2https://beadpattern.net/cdn-cgi/speculation/cdn-cgi/speculation https://beadpattern.net/cdn-cgi/speculation — 200 — 480 B — 21 ms — h2https://beadpattern.net/_next/static/media/22a5144ee8d83bca-s.p.woff2/_next/static/media/22a5144ee8d83bc... https://beadpattern.net/_next/static/media/22a5144ee8d83bca-s.p.woff2 — 200 — 29.0 KiB — 49 ms — h2https://beadpattern.net/_next/static/media/7d4881bb7e1bf84d-s.p.woff2/_next/static/media/7d4881bb7e1bf84... https://beadpattern.net/_next/static/media/7d4881bb7e1bf84d-s.p.woff2 — 200 — 23.0 KiB — 70 ms — h2https://beadpattern.net/_next/static/media/f4c2f440cf73b155-s.p.woff2/_next/static/media/f4c2f440cf73b15... https://beadpattern.net/_next/static/media/f4c2f440cf73b155-s.p.woff2 — 200 — 103.3 KiB — 83 ms — h2https://beadpattern.net/ai-studio/dog-photo.webp/ai-studio/dog-photo.webp https://beadpattern.net/ai-studio/dog-photo.webp — 200 — 63.8 KiB — 83 ms — h2https://beadpattern.net/_next/static/css/5315e3396eddbb1b.css/_next/static/css/5315e3396eddbb1b.... https://beadpattern.net/_next/static/css/5315e3396eddbb1b.css — 200 — 1.6 KiB — 35 ms — h2https://beadpattern.net/_next/static/css/b9d799aabe7dabd7.css/_next/static/css/b9d799aabe7dabd7.... https://beadpattern.net/_next/static/css/b9d799aabe7dabd7.css — 200 — 22.6 KiB — 42 ms — h2https://cdn.simpleicons.org/mastercard/EB001Bcdn.simpleicons.org/mastercard/EB00... https://cdn.simpleicons.org/mastercard/EB001B — 200 — 1.1 KiB — 101 ms — h3https://cdn.simpleicons.org/americanexpress/2E77BCcdn.simpleicons.org/americanexpress... https://cdn.simpleicons.org/americanexpress/2E77BC — 200 — 2.6 KiB — 108 ms — h3https://beadpattern.net/images/payment-methods/unionpay.svg/images/payment-methods/unionpay.sv... https://beadpattern.net/images/payment-methods/unionpay.svg — 200 — 3.7 KiB — 94 ms — h3https://cdn.simpleicons.org/jcb/0B4EA2cdn.simpleicons.org/jcb/0B4EA2 https://cdn.simpleicons.org/jcb/0B4EA2 — 200 — 1.3 KiB — 87 ms — h3https://beadpattern.net/logo-64.webp/logo-64.webp https://beadpattern.net/logo-64.webp — 200 — 1.1 KiB — 135 ms — h3https://cdn.simpleicons.org/applepay/000000cdn.simpleicons.org/applepay/000000 https://cdn.simpleicons.org/applepay/000000 — 200 — 2.5 KiB — 45 ms — h3https://cdn.simpleicons.org/googlepay/4285F4cdn.simpleicons.org/googlepay/4285F... https://cdn.simpleicons.org/googlepay/4285F4 — 200 — 1.4 KiB — 86 ms — h3https://beadpattern.net/images/payment-methods/link.svg/images/payment-methods/link.svg https://beadpattern.net/images/payment-methods/link.svg — 200 — 1.2 KiB — 135 ms — h3https://beadpattern.net/_next/static/chunks/webpack-9a08a7aded9f1d20.js/_next/static/chunks/webpack-9a08a7... https://beadpattern.net/_next/static/chunks/webpack-9a08a7aded9f1d20.js — 200 — 3.1 KiB — 93 ms — h3https://beadpattern.net/_next/static/chunks/074a3fa2-cd1bc05d4b7401a7.js/_next/static/chunks/074a3fa2-cd1bc... https://beadpattern.net/_next/static/chunks/074a3fa2-cd1bc05d4b7401a7.js — 200 — 54.0 KiB — 116 ms — h3https://beadpattern.net/_next/static/chunks/8134-bf855aff01638ff7.js/_next/static/chunks/8134-bf855aff0... https://beadpattern.net/_next/static/chunks/8134-bf855aff01638ff7.js — 200 — 46.0 KiB — 130 ms — h3https://beadpattern.net/_next/static/chunks/main-app-04b8fb939f51896f.js/_next/static/chunks/main-app-04b8f... https://beadpattern.net/_next/static/chunks/main-app-04b8fb939f51896f.js — 200 — 770 B — 75 ms — h3https://beadpattern.net/_next/static/chunks/3860-136a31198a522557.js/_next/static/chunks/3860-136a31198... https://beadpattern.net/_next/static/chunks/3860-136a31198a522557.js — 200 — 4.0 KiB — 117 ms — h3https://beadpattern.net/_next/static/chunks/5675-af6b1a0a6d31bd9f.js/_next/static/chunks/5675-af6b1a0a6... https://beadpattern.net/_next/static/chunks/5675-af6b1a0a6d31bd9f.js — 200 — 15.6 KiB — 84 ms — h3https://beadpattern.net/_next/static/chunks/1797-4193e18b056c3b55.js/_next/static/chunks/1797-4193e18b0... https://beadpattern.net/_next/static/chunks/1797-4193e18b056c3b55.js — 200 — 6.0 KiB — 84 ms — h3https://beadpattern.net/_next/static/chunks/254-bda653bda46d02dc.js/_next/static/chunks/254-bda653bda4... https://beadpattern.net/_next/static/chunks/254-bda653bda46d02dc.js — 200 — 10.2 KiB — 116 ms — h3https://beadpattern.net/_next/static/chunks/7334-aabcf9711e33cda1.js/_next/static/chunks/7334-aabcf9711... https://beadpattern.net/_next/static/chunks/7334-aabcf9711e33cda1.js — 200 — 5.0 KiB — 117 ms — h3https://beadpattern.net/_next/static/chunks/5783-c79a451851d39da2.js/_next/static/chunks/5783-c79a45185... https://beadpattern.net/_next/static/chunks/5783-c79a451851d39da2.js — 200 — 5.3 KiB — 118 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
8% of JavaScript execution is third-party
First-party Third-party 252ms · 185KB · $3/mo
Google Tag Manager
Tag Manager
Costly
Execution 252ms
Transfer 185 KB
Unused 41%
Monthly Cost $3/mo

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.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

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

This origin passes Core Web Vitals assessment
Image Optimization
1 images, 2 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

2 KB

1 missing dimensions
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