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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
86
GRADE
B
FIX
4
REVIEW
3
PASS
6
INFO
2

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

Mobile Desktop
77
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
98
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

1.51 s

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

3.00 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.

0.010

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

1.51 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.

3.11 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
15
6 PASS 3 REVIEW 4 FIX
F
Page Weight Budget
Action
3.3 MB transferred, 63 requests
FIX
3.3 MB transferred, 63 requests
Warning::
Page weighs 4.6 MB (3.3 MB transferred)
Warning::
Images are 2.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 2.7 MB
Info::
63 HTTP requests
Info::
Estimated 0.69 g CO2 per page load
3.3 MB / 2.4 MB budget
3.3 MB transferred
63 requests
0.69 g CO2 per page load
Images 2.7 MiB 84%
JavaScript 220.0 KiB 7%
Fonts 198.7 KiB 6%
CSS 82.2 KiB 2%
HTML 41.1 KiB 1%
Other 4.8 KiB 0%
Other 1.8 KiB 0%
Other 1.5 KiB 0%
Other 596 B 0%
0 2.4 MB 4.9 MB
Over budget

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

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 (3.3 MiB of 3.3 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
Page Weight Inventory
Action
63 resources · 3.3 MB · 76 KB savings available
FIX
63 resources · 3.3 MB · 76 KB savings available
Warning::
Page weight 2.3 MB over 1MB target
Got: 3.3 MB Expected: ≤ 1 MB
Info::
~76 KB of savings available
Warning::
62 third-party resources (100% of weight)
Info::
7 resources over 200KB
63 resources · 3.3 MiB · 62 third-party 2.3 MiB over 1MB target
Image 84% · 2.7 MiB
JavaScript 7% · 220.0 KiB
Font 6% · 198.7 KiB
CSS 2% · 82.2 KiB
Document 1% · 41.1 KiB
Other 0% · 7.2 KiB

~76.3 KiB of savings available

Remove unused JavaScript: 76.3 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

C
Image Optimization
Action
25 images, 0 KB saveable
REVIEW
25 images, 0 KB saveable
Warning::
https://assets.prod.abebookscdn.com/cdn/shared/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.prod.abebookscdn.com/cdn/shared/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.prod.abebookscdn.com/cdn/shared/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://assets.prod.abebookscdn.com/cdn/shared/ima... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
25 images 2.7 MB
0 oversized -0 KB
14 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
19 scripts, 76 KB unused
REVIEW
19 scripts, 76 KB unused
Warning::
https://assets.brightspot.abebooks.a2z.com/resourc...: 54 KB unused (79%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://assets.prod.abebookscdn.com/cdn/com/script...: 22 KB unused (58%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 76 KB
76 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/styleguide/All.min.7e6ab57976631cf2500d4b94dc6618e4.gz.js68 KB54 KB (79%)✓3rd
https://assets.prod.abebookscdn.com/cdn/com/scripts/cwrumclient-d9349b9d05.js39 KB22 KB (58%)✓3rd
https://assets.prod.abebookscdn.com/cdn/com/scripts/sitenavtoggle-e7be457d87.js1 KB—✓3rd
https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/webcomponents-loader/webcomponents-loader.2938a610ca02c611209b1a5ba2884385.gz.js1 KB—✓3rd
https://assets.prod.abebookscdn.com/cdn/com/scripts/vendor/react18.bundle-8d00f21452.js46 KB—✓3rd
https://assets.prod.abebookscdn.com/cdn/com/scripts/components/eventbus-e0d54b1290.js1 KB—✓3rd
https://assets.prod.abebookscdn.com/cdn/com/scripts/bootstrap.native-b164d16592.js2 KB—✓3rd
https://assets.prod.abebookscdn.com/cdn/com/scripts/components/productwidget_core-bbffc9c3e8.js15 KB—✓3rd
https://assets.prod.abebookscdn.com/cdn/com/scripts/components/productwidget_merch-8ae3fc5eaa.js2 KB—✓3rd
https://assets.prod.abebookscdn.com/cdn/com/scripts/components/productwidget_recommendations_home-78267ef0b8.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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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+
JS Execution Cost
324ms total JS execution
PASS
324ms total JS execution
Info::
https://www.abebooks.com/: 135ms CPU time
Info::
https://assets.prod.abebookscdn.com/cdn/com/script...: 106ms CPU time
Info::
Unattributable: 82ms CPU time
Warning::
Third-party scripts: 324ms (100% of total)

Main Thread Breakdown

Other 33% Script Evaluation 32% Style & Layout 22% Rendering 5% Parse HTML & CSS 4% Script Parsing & Compilation 4%
ScriptTotalScriptingParse/CompileParty
https://www.abebooks.com/135ms10ms2ms3rd
https://assets.prod.abebookscdn.com/cdn/com/scripts/combined/csa-d403f7adf4.js106ms29ms1ms3rd
Unattributable82ms5ms0ms3rd
A+
Font Loading
5 fonts (199 KB)
PASS
5 fonts (199 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

199 KB total

Render-blocking

0

of 5

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 FCP 1.5 s LCP 3.0 shttps://assets.prod.abebookscdn.com/cdn/shared/fonts/ember/AmazonEmber_W_Rg.woff2AmazonEmber_W_Rg.woff2 https://assets.prod.abebookscdn.com/cdn/shared/fonts/ember/AmazonEmber_W_Rg.woff2 — 64.4 KiB — 11 ms — font-display: swaphttps://assets.prod.abebookscdn.com/cdn/shared/fonts/ember/AmazonEmber_W_Bd.woff2AmazonEmber_W_Bd.woff2 https://assets.prod.abebookscdn.com/cdn/shared/fonts/ember/AmazonEmber_W_Bd.woff2 — 64.4 KiB — 4 ms — font-display: swaphttps://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/106ba4225232873f12c0.4664da3866680953e1d59d76b27885c4.woff2106ba4225232873f12c0.46... https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/106ba4225232873f12c0.4664da3866680953e1d59d76b27885c4.woff2 — 21.2 KiB — 5 ms — font-display: swaphttps://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/468fcbeda4f4dddfff2e.3af5b8c30a74380709837f8a9d09f0cd.woff2468fcbeda4f4dddfff2e.3a... https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/468fcbeda4f4dddfff2e.3af5b8c30a74380709837f8a9d09f0cd.woff2 — 21.1 KiB — 6 ms — font-display: swaphttps://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/d26713d7962516a8e8bc.1e10a9c699a3c6370777fdcd729573dd.woff2d26713d7962516a8e8bc.1e... https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/d26713d7962516a8e8bc.1e10a9c699a3c6370777fdcd729573dd.woff2 — 27.6 KiB — 6 ms — font-display: swap
AmazonEmber_W_Rg.woff2 woff2 swap
Size 64 KB
Load time 11 ms
Start 611 ms
Risk FOUT — text flashes from fallback to web font
AmazonEmber_W_Bd.woff2 woff2 swap
Size 64 KB
Load time 4 ms
Start 624 ms
Risk FOUT — text flashes from fallback to web font
106ba4225232873f12c0.46... woff2 swap
Size 21 KB
Load time 5 ms
Start 644 ms
Risk FOUT — text flashes from fallback to web font
468fcbeda4f4dddfff2e.3a... woff2 swap
Size 21 KB
Load time 6 ms
Start 680 ms
Risk FOUT — text flashes from fallback to web font
d26713d7962516a8e8bc.1e... woff2 swap
Size 28 KB
Load time 6 ms
Start 681 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)
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
Network Waterfall
63 requests over 1321ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.5 s LCP 3.0 shttps://abebooks.com// https://abebooks.com/ — 301 — 94 B — 323 ms — h2https://www.abebooks.com/www.abebooks.com/ https://www.abebooks.com/ — 200 — 41.1 KiB — 325 ms — h2https://assets.brightspot.abebooks.a2z.com/dims4/default/3f23eb8/2147483647/strip/true/crop/1580x760+0+0/resize/936x450!/format/webp/quality/90/?url=http%3A%2F%2Fabebooks-brightspot.s3.us-west-2.amazonaws.com%2Ffa%2Fc9%2F72d3429f4ae39240cc444e556eaa%2Fcarousel-jane-austen.pngassets.brightspot.abebooks.a2z.com/... https://assets.brightspot.abebooks.a2z.com/dims4/default/3f23eb8/2147483647/strip/true/crop/1580x760+0+0/resize/936x450!/format/webp/quality/90/?url=http%3A%2F%2Fabebooks-brightspot.s3.us-west-2.amazonaws.com%2Ffa%2Fc9%2F72d3429f4ae39240cc444e556eaa%2Fcarousel-jane-austen.png — 200 — 58.0 KiB — 44 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/vendor/react18.bundle-8d00f21452.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/vendor/react18.bundle-8d00f21452.js — 200 — 46.1 KiB — 47 ms — h2https://assets.prod.abebookscdn.com/cdn/shared/images/common/logos/abebooks-logo-com.pngassets.prod.abebookscdn.com/cdn/sha... https://assets.prod.abebookscdn.com/cdn/shared/images/common/logos/abebooks-logo-com.png — 200 — 4.7 KiB — 25 ms — h2https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/styleguide/All.min.800b47662f6255c0dabb07106f1d3e3b.gz.cssassets.brightspot.abebooks.a2z.com/... https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/styleguide/All.min.800b47662f6255c0dabb07106f1d3e3b.gz.css — 200 — 76.6 KiB — 42 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/combined/global-utils-123e61a80f.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/combined/global-utils-123e61a80f.js — 200 — 8.6 KiB — 36 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/combined/csa-d403f7adf4.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/combined/csa-d403f7adf4.js — 200 — 12.8 KiB — 17 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/combined/global-base.v2-629127c516.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/combined/global-base.v2-629127c516.js — 200 — 1.9 KiB — 19 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/sitenavtoggle-e7be457d87.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/sitenavtoggle-e7be457d87.js — 200 — 822 B — 18 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/components/eventbus-e0d54b1290.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/components/eventbus-e0d54b1290.js — 200 — 1.3 KiB — 20 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/bootstrap.native-b164d16592.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/bootstrap.native-b164d16592.js — 200 — 2.2 KiB — 20 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/components/productwidget_core-bbffc9c3e8.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/components/productwidget_core-bbffc9c3e8.js — 200 — 15.3 KiB — 25 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/components/productwidget_merch-8ae3fc5eaa.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/components/productwidget_merch-8ae3fc5eaa.js — 200 — 2.2 KiB — 26 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/components/productwidget_recommendations_home-78267ef0b8.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/components/productwidget_recommendations_home-78267ef0b8.js — 200 — 1.5 KiB — 28 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/cwrumclient-d9349b9d05.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/cwrumclient-d9349b9d05.js — 200 — 38.8 KiB — 33 ms — h2https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/webcomponents-loader/webcomponents-loader.2938a610ca02c611209b1a5ba2884385.gz.jsassets.brightspot.abebooks.a2z.com/... https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/webcomponents-loader/webcomponents-loader.2938a610ca02c611209b1a5ba2884385.gz.js — 200 — 1.4 KiB — 21 ms — h2https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/styleguide/All.min.7e6ab57976631cf2500d4b94dc6618e4.gz.jsassets.brightspot.abebooks.a2z.com/... https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/styleguide/All.min.7e6ab57976631cf2500d4b94dc6618e4.gz.js — 200 — 68.5 KiB — 34 ms — h2https://www.abebooks.com/cdn/shared/images/header/search.pngwww.abebooks.com/cdn/shared/images/... https://www.abebooks.com/cdn/shared/images/header/search.png — 200 — 969 B — 136 ms — h2https://assets.prod.abebookscdn.com/cdn/shared/images/header/abe-sprite.pngassets.prod.abebookscdn.com/cdn/sha... https://assets.prod.abebookscdn.com/cdn/shared/images/header/abe-sprite.png — 200 — 12.6 KiB — 12 ms — h2https://assets.prod.abebookscdn.com/cdn/shared/fonts/ember/AmazonEmber_W_Rg.woff2assets.prod.abebookscdn.com/cdn/sha... https://assets.prod.abebookscdn.com/cdn/shared/fonts/ember/AmazonEmber_W_Rg.woff2 — 200 — 64.4 KiB — 11 ms — h2https://assets.prod.abebookscdn.com/cdn/shared/fonts/ember/AmazonEmber_W_Bd.woff2assets.prod.abebookscdn.com/cdn/sha... https://assets.prod.abebookscdn.com/cdn/shared/fonts/ember/AmazonEmber_W_Bd.woff2 — 200 — 64.4 KiB — 4 ms — h2https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/106ba4225232873f12c0.4664da3866680953e1d59d76b27885c4.woff2assets.brightspot.abebooks.a2z.com/... https://assets.brightspot.abebooks.a2z.com/resource/00000179-3cdd-d40f-a779-bedf7f820000/106ba4225232873f12c0.4664da3866680953e1d59d76b27885c4.woff2 — 200 — 21.2 KiB — 5 ms — h2data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZlcnNpb249IjEuMSIga…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZlcnNpb249IjEuMSIga… — 200 — 0 B — 0 ms — datadata:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZlcnNpb249IjEuMSIga…data:image/svg+xml;base64,PHN2ZyB4b... data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZlcnNpb249IjEuMSIga… — 200 — 0 B — 0 ms — 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h2https://bat.bing.com/action/0?ti=5268667&Ver=2&asc=G&evt=pageLoad&mid=fa0c068c-9565-6c53-18d5-48dbde024fbe&rn=504968&p=https%3A%2F%2Fwww.abebooks.com%2F&pi=918639831&ts=1776809953392bat.bing.com/action/0?ti=5268667&Ve... https://bat.bing.com/action/0?ti=5268667&Ver=2&asc=G&evt=pageLoad&mid=fa0c068c-9565-6c53-18d5-48dbde024fbe&rn=504968&p=https%3A%2F%2Fwww.abebooks.com%2F&pi=918639831&ts=1776809953392 — 204 — 490 B — 91 ms — h2https://www.abebooks.com/_trackwww.abebooks.com/_track https://www.abebooks.com/_track — 204 — 894 B — 201 ms — h2https://assets.prod.abebookscdn.com/cdn/com/scripts/components/searchautosuggest-ec885890ce.jsassets.prod.abebookscdn.com/cdn/com... https://assets.prod.abebookscdn.com/cdn/com/scripts/components/searchautosuggest-ec885890ce.js — 200 — 8.1 KiB — 5 ms — h2https://assets.prod.abebookscdn.com/cdn/shared/images/common/icons/times-light.svgassets.prod.abebookscdn.com/cdn/sha... 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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 324ms · 54KB · €2/mo
www.abebooks.com
Other
Optional
Execution 135ms
Transfer 41 KB
Monthly Cost €1/mo
assets.prod.abebookscdn.com
Other
Optional
Execution 106ms
Transfer 13 KB
Monthly Cost €1/mo
Unattributable
Other
Optional
Execution 82ms
Transfer 0 KB
Monthly Cost €0/mo

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

How third-party costs are calculated

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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