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https://Brickderby.com

Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
80
GRADE
B
FIX
5
REVIEW
4
PASS
14
INFO
3

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

Mobile Desktop
54
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
90
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
69
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

6.48 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

13.67 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

113 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.

19.35 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.

13.80 s

Page Load Progression

2.3 s
4.6 s
6.9 s
9.2 s
11.4 s
13.7 s
16.0 s
18.3 s
Checks
26
14 PASS 4 REVIEW 5 FIX
F
Page Weight Budget
Action
30.0 MB transferred, 78 requests
FIX
30.0 MB transferred, 78 requests
Critical::
Page weighs 32.7 MB (30.0 MB transferred)
Warning::
JavaScript is 788 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 788 KB
Info::
Fonts are 356 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 356 KB
Info::
78 HTTP requests
Info::
Estimated 6.3 g CO2 per page load
30.0 MB / 2.4 MB budget
30.0 MB transferred
78 requests
6.3 g CO2 per page load
Other 27.8 MiB 93%
JavaScript 787.9 KiB 3%
Images 683.0 KiB 2%
Fonts 355.6 KiB 1%
HTML 179.3 KiB 1%
Other 169.3 KiB 1%
Other 22.6 KiB 0%
CSS 14.3 KiB 0%
Other 1.1 KiB 0%
0 2.4 MB 4.9 MB
Over budget

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

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (30.0 MiB of 30.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Execution Cost
Action
4525ms total JS execution
FIX
4525ms total JS execution
Warning::
Unattributable: 1514ms CPU time
Warning::
https://cdn.shopify.com/oxygen-v2/42123/36368/7637...: 1202ms CPU time
Warning::
https://www.brickderby.com/: 793ms CPU time
Warning::
https://us-assets.i.posthog.com/static/array.js: 401ms CPU time
Warning::
https://js.hcaptcha.com/1/api.js?render=explicit: 291ms CPU time
Warning::
Third-party scripts: 4525ms (100% of total)

Main Thread Breakdown

Script Evaluation 46% Other 39% Style & Layout 8%
ScriptTotalScriptingParse/CompileParty
Unattributable1514ms40ms0ms3rd
https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/components-Dran8p4v.js1202ms1084ms1ms3rd
https://www.brickderby.com/793ms37ms6ms3rd
https://us-assets.i.posthog.com/static/array.js401ms367ms20ms3rd
https://js.hcaptcha.com/1/api.js?render=explicit291ms250ms32ms3rd
https://us-assets.i.posthog.com/static/posthog-recorder.js?v=1.372.10251ms236ms11ms3rd
chrome-error://chromewebdata/74ms25ms23ms3rd
D
Page Weight Inventory
Action
78 resources · 30.0 MB · 141 KB savings available
FIX
78 resources · 30.0 MB · 141 KB savings available
Warning::
Page weight 30.0 MB exceeds 1 MB target by 29.0 MB
Got: 30.0 MB Expected: ≤ 1 MB
Info::
~141 KB of savings available
Warning::
77 third-party resources (100% of weight)
Info::
4 resources over 200KB
78 resources · 30.0 MiB · 77 third-party 29.0 MiB over 1MB target
Media 93% · 27.8 MiB
Image 3% · 854.8 KiB
JavaScript 3% · 787.9 KiB
Font 1% · 355.6 KiB
Document 1% · 180.8 KiB
Other 0% · 19.7 KiB
CSS 0% · 14.3 KiB

~140.5 KiB of savings available

Remove unused JavaScript: 140.5 KiB
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: private, no-store
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

private, no-store

DirectiveValueMeaning
private—Only browser cache, not CDN/proxy
no-store—Never cache this response
B
Image Optimization
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
https://cdn.shopify.com/s/files/1/0646/2980/1025/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.shopify.com/s/files/1/0646/2980/1025/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.shopify.com/s/files/1/0646/2980/1025/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.shopify.com/s/files/1/0646/2980/1025/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.shopify.com/s/files/1/0646/2980/1025/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.shopify.com/s/files/1/0646/2980/1025/f... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 683 KB
0 oversized -0 KB
3 legacy format
6 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

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
32 scripts, 141 KB unused
REVIEW
32 scripts, 141 KB unused
Warning::
https://us-assets.i.posthog.com/static/array.js: 37 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://js.hcaptcha.com/1/api.js?render=explicit: 30 KB unused (35%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://us-assets.i.posthog.com/static/surveys.js?...: 27 KB unused (81%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.shopify.com/oxygen-v2/42123/36368/7637...: 27 KB unused (36%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://us-assets.i.posthog.com/static/posthog-rec...: 20 KB unused (40%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 141 KB
141 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://us-assets.i.posthog.com/static/array.js69 KB37 KB (53%)✓3rd
https://js.hcaptcha.com/1/api.js?render=explicit86 KB30 KB (35%)✓3rd
https://us-assets.i.posthog.com/static/surveys.js?v=1.372.1033 KB27 KB (81%)✓3rd
https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/components-Dran8p4v.js75 KB27 KB (36%)✓3rd
https://us-assets.i.posthog.com/static/posthog-recorder.js?v=1.372.1051 KB20 KB (40%)✓3rd
https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/hcaptcha-Bt8A3OJo.js1 KB—✓3rd
https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/download-D3zG-AGV.js1 KB—✓3rd
https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/shopping-bag-B35a_Ms5.js1 KB—✓3rd
https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/CartMain-SxRewnAz.js4 KB—✓3rd
https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/search-DOeYwaXi.js1 KB—✓3rd

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

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

C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
B
JavaScript Blocking
2 JS blocking issue(s) detected
REVIEW
2 JS blocking issue(s) detected
Warning::
6 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.
Warning::
Total JS execution time is 4.5 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
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
3 fonts (356 KB)
PASS
3 fonts (356 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

356 KB total

Render-blocking

0

of 3

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s FCP 6.5 s LCP 13.7 shttps://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/fonts/source-sans-pro/SourceSansPro-Bold.otfSourceSansPro-Bold.otf https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/fonts/source-sans-pro/SourceSansPro-Bold.otf — 119.4 KiB — 352 ms — font-display: swaphttps://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/fonts/source-sans-pro/SourceSansPro-Regular.otfSourceSansPro-Regular.otf https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/fonts/source-sans-pro/SourceSansPro-Regular.otf — 117.8 KiB — 189 ms — font-display: swaphttps://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/fonts/source-sans-pro/SourceSansPro-Semibold.otfSourceSansPro-Semibold.otf https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/fonts/source-sans-pro/SourceSansPro-Semibold.otf — 118.5 KiB — 205 ms — font-display: swap
SourceSansPro-Bold.otf otf swap
Size 119 KB
Load time 352 ms
Start 574 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
SourceSansPro-Regular.otf otf swap
Size 118 KB
Load time 189 ms
Start 575 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
SourceSansPro-Semibold.otf otf swap
Size 118 KB
Load time 205 ms
Start 575 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
  • 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 ~284 KB and ~568 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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
2
preload
—
dns-prefetch
—
prefetch
—

2 resource hints configured

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+
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+
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
PASS
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: private, no-store
A+
Server-Timing Observability
13 Server-Timing entries advertised
PASS
13 Server-Timing entries advertised
Info::
Server-Timing header advertises 13 timing entries
A+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
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
CSS Performance Depth
1 CSS depth issue(s) detected
PASS
1 CSS depth issue(s) detected
Warning::
5 render-blocking stylesheet(s) -- recommended: <=3
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
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 16830ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s FCP 6.5 s LCP 13.7 shttps://brickderby.com// https://brickderby.com/ — 301 — 1.5 KiB — 122 ms — h2https://www.brickderby.com/www.brickderby.com/ https://www.brickderby.com/ — 200 — 14.7 KiB — 153 ms — h2https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/tailwind-Bhk0M0cb.csscdn.shopify.com/oxygen-v2/42123/363... https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/tailwind-Bhk0M0cb.css — 200 — 8.6 KiB — 120 ms — h2https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/reset-2E0RnPfB.csscdn.shopify.com/oxygen-v2/42123/363... https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/reset-2E0RnPfB.css — 200 — 841 B — 225 ms — h2https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/app-CDFheVjm.csscdn.shopify.com/oxygen-v2/42123/363... https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/app-CDFheVjm.css — 200 — 2.5 KiB — 204 ms — h2https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/fonts-C3LzMJ8b.csscdn.shopify.com/oxygen-v2/42123/363... https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/fonts-C3LzMJ8b.css — 200 — 896 B — 205 ms — h2https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/recommendations-DIApTNfD.csscdn.shopify.com/oxygen-v2/42123/363... https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/recommendations-DIApTNfD.css — 200 — 1.5 KiB — 229 ms — h2https://cdn.shopify.com/s/files/1/0646/2980/1025/files/BD-Logo-cars.png?v=1745787365cdn.shopify.com/s/files/1/0646/2980... https://cdn.shopify.com/s/files/1/0646/2980/1025/files/BD-Logo-cars.png?v=1745787365 — 200 — 14.6 KiB — 103 ms — h2https://www.brickderby.com/campaign/brick-derby-sizzle-poster.jpgwww.brickderby.com/campaign/brick-d... https://www.brickderby.com/campaign/brick-derby-sizzle-poster.jpg — 200 — 109.1 KiB — 170 ms — h2https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/entry.client-BY4gdQlY.jscdn.shopify.com/oxygen-v2/42123/363... https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/entry.client-BY4gdQlY.js — 200 — 1.8 KiB — 166 ms — h2https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/jsx-runtime-CASrxSZM.jscdn.shopify.com/oxygen-v2/42123/363... https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/jsx-runtime-CASrxSZM.js — 200 — 3.4 KiB — 166 ms — h2https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/components-Dran8p4v.jscdn.shopify.com/oxygen-v2/42123/363... https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/components-Dran8p4v.js — 200 — 74.7 KiB — 169 ms — h2https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/index-BQdRp_0x.jscdn.shopify.com/oxygen-v2/42123/363... https://cdn.shopify.com/oxygen-v2/42123/36368/76374/3523295/assets/index-BQdRp_0x.js — 200 — 11.5 KiB — 210 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
100% of JavaScript execution is third-party
First-party Third-party 4525ms · 296KB · $26/mo
Unattributable
Other
Costly
Execution 1514ms
Transfer 0 KB
Monthly Cost $9/mo
cdn.shopify.com
Other
Costly
Execution 1202ms
Transfer 75 KB
Unused 36%
Monthly Cost $7/mo
www.brickderby.com
Other
Costly
Execution 793ms
Transfer 15 KB
Monthly Cost $5/mo
us-assets.i.posthog.com
Other
Costly
Execution 401ms
Transfer 69 KB
Unused 53%
Monthly Cost $2/mo
js.hcaptcha.com
Other
Costly
Execution 291ms
Transfer 86 KB
Unused 35%
Monthly Cost $2/mo
us-assets.i.posthog.com
Other
Costly
Execution 251ms
Transfer 51 KB
Unused 40%
Monthly Cost $1/mo
chromewebdata
Other
Optional
Execution 74ms
Transfer 0 KB
Monthly Cost $0/mo

These scripts may cost more than they're worth

  • Unattributable adds 1514ms and costs ~$9/month
  • cdn.shopify.com adds 1202ms and costs ~$7/month
  • www.brickderby.com adds 793ms and costs ~$5/month
  • us-assets.i.posthog.com adds 401ms and costs ~$2/month
  • js.hcaptcha.com adds 291ms and costs ~$2/month
  • us-assets.i.posthog.com adds 251ms and costs ~$1/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

Unattributable takes 1514ms 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

cdn.shopify.com takes 1202ms 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

www.brickderby.com takes 793ms 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

us-assets.i.posthog.com takes 401ms 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

53% of us-assets.i.posthog.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

js.hcaptcha.com takes 291ms 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

us-assets.i.posthog.com takes 251ms 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

Image Optimization
13 images, 706 KB total, 457 KB wasted
INFO

Image Optimization Audit

Total Images

13

Total Size

706 KB

Oversized

8

Wasted

457 KB

8 missing dimensions 8 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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