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https://jimdo.com

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
4
REVIEW
1
PASS
8
INFO
2

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

92
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.
100
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.

935 ms

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

1.29 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.

0.071

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

1.73 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.

1.29 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
8 PASS 1 REVIEW 4 FIX
F
Page Weight Budget
Action
2.6 MB transferred, 87 requests
FIX
2.6 MB transferred, 87 requests
Warning::
Page weighs 5.3 MB (2.6 MB transferred)
Warning::
Images are 1.5 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.5 MB
Warning::
JavaScript is 883 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 883 KB
Info::
87 HTTP requests
Info::
Estimated 0.54 g CO2 per page load
2.6 MB / 2.4 MB budget
2.6 MB transferred
87 requests
0.54 g CO2 per page load
Images 1.5 MiB 60%
JavaScript 883.0 KiB 33%
HTML 78.5 KiB 3%
Fonts 61.4 KiB 2%
Other 30.7 KiB 1%
Other 7.3 KiB 0%
Other 6.9 KiB 0%
CSS 2.8 KiB 0%
Other 1.0 KiB 0%
Other 482 B 0%
Other 0 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

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

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 (2.6 MiB of 2.6 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Bundles
Action
28 scripts, 373 KB unused
FIX
28 scripts, 373 KB unused
Warning::
https://accounts.google.com/gsi/client: 81 KB unused (85%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-MTH...: 80 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.jimdo.com/commons-ad850af191324ab612d1...: 55 KB unused (51%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.jimdo.com/app-11a77669ac2f49d58fd2.js: 41 KB unused (47%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://web.cmp.usercentrics.eu/ui/v/3.116.0/WebSd...: 35 KB unused (63%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 373 KB
373 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://accounts.google.com/gsi/client96 KB81 KB (85%)3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MTHKCKN185 KB80 KB (44%)3rd
https://www.jimdo.com/commons-ad850af191324ab612d1.js109 KB55 KB (51%)3rd
https://www.jimdo.com/app-11a77669ac2f49d58fd2.js86 KB41 KB (47%)3rd
https://web.cmp.usercentrics.eu/ui/v/3.116.0/WebSdk.lib.d00a93b7.js56 KB35 KB (63%)3rd
https://www.jimdo.com/257832df427b42d4aeba881d624964bc7101cd63-9daeedd98ae9d970fadd.js38 KB35 KB (94%)3rd
https://www.jimdo.com/component---src-landing-pages-homepage-index-tsx-750d51e3a69eaa9cc6a9.js34 KB23 KB (68%)3rd
https://www.jimdo.com/oidc-silent-callback/assets/client.UZokQE-o.js43 KB22 KB (52%)3rd
https://web.cmp.usercentrics.eu/ui/v/3.116.0/UcGdprCmpView.b05dbc41.js18 KB3rd
https://web.cmp.usercentrics.eu/ui/loader.js15 KB3rd

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

D
Page Weight Inventory
Action
87 resources · 2.6 MB · 373 KB savings available
FIX
87 resources · 2.6 MB · 373 KB savings available
Warning::
Page weight 1.6 MB over 1MB target
Got: 2.6 MB Expected: ≤ 1 MB
Info::
~373 KB of savings available
Warning::
86 third-party resources (100% of weight)
87 resources · 2.6 MiB · 86 third-party 1.6 MiB over 1MB target
Image 60% · 1.5 MiB
JavaScript 33% · 883.0 KiB
Document 3% · 79.7 KiB
Font 2% · 61.4 KiB
Other 1% · 38.9 KiB
CSS 0% · 2.8 KiB

~372.9 KiB of savings available

Remove unused JavaScript: 372.9 KiB
B
JS Execution Cost
565ms total JS execution
REVIEW
565ms total JS execution
Info::
https://www.jimdo.com/framework-7cbf8ffa0f29f35e91...: 166ms CPU time
Info::
https://www.jimdo.com/: 162ms CPU time
Info::
Unattributable: 128ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-MTH...: 59ms CPU time
Info::
https://www.jimdo.com/app-11a77669ac2f49d58fd2.js: 50ms CPU time
Warning::
Third-party scripts: 565ms (100% of total)

Main Thread Breakdown

Script Evaluation 50% Other 24% Script Parsing & Compilation 8% Style & Layout 8% Rendering 4% Parse HTML & CSS 4%
ScriptTotalScriptingParse/CompileParty
https://www.jimdo.com/framework-7cbf8ffa0f29f35e91be.js166ms143ms3ms3rd
https://www.jimdo.com/162ms16ms3ms3rd
Unattributable128ms11ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-MTHKCKN59ms47ms11ms3rd
https://www.jimdo.com/app-11a77669ac2f49d58fd2.js50ms39ms6ms3rd
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
Image Optimization
28 images, 0 KB saveable
PASS
28 images, 0 KB saveable
Info::
All images are well-optimized
28 images 1.5 MB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
Font Loading
3 fonts (61 KB)
PASS
3 fonts (61 KB)
Info::
3 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

3

61 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 500 ms 1.0 s FCP 935 ms LCP 1.3 shttps://webteam.jimstatic.com/fonts/fonts/euclidcircular/regular.woff2regular.woff2 https://webteam.jimstatic.com/fonts/fonts/euclidcircular/regular.woff2 — 20.5 KiB — 84 ms — font-display: swaphttps://webteam.jimstatic.com/fonts/fonts/euclidcircular/medium.woff2medium.woff2 https://webteam.jimstatic.com/fonts/fonts/euclidcircular/medium.woff2 — 20.5 KiB — 101 ms — font-display: swaphttps://webteam.jimstatic.com/fonts/fonts/euclidcircular/semibold.woff2semibold.woff2 https://webteam.jimstatic.com/fonts/fonts/euclidcircular/semibold.woff2 — 20.4 KiB — 101 ms — font-display: swap
regular.woff2 woff2 swap
Size 20 KB
Load time 84 ms
Start 258 ms
Risk FOUT — text flashes from fallback to web font
medium.woff2 woff2 swap
Size 21 KB
Load time 101 ms
Start 258 ms
Risk FOUT — text flashes from fallback to web font
semibold.woff2 woff2 swap
Size 20 KB
Load time 101 ms
Start 259 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
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

A
HTTP Caching
max-age=3600 (1 hour)
PASS
max-age=3600 (1 hour)
Info::
Cache-Control header is set
Got: max-age=3600
Info::
Effective TTL: 1 hour (max-age=3600)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

max-age=3600

DirectiveValueMeaning
max-age3600Cache for 1 hour
Effective TTL: 3600 seconds
Network Waterfall
87 requests over 2619ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 935 ms LCP 1.3 shttps://jimdo.com// https://jimdo.com/ — 301 — 186 B — 60 ms — h2https://www.jimdo.com/www.jimdo.com/ https://www.jimdo.com/ — 200 — 75.5 KiB — 207 ms — h2https://webteam.jimstatic.com/fonts/fonts/euclidcircular/regular.woff2webteam.jimstatic.com/fonts/fonts/e... https://webteam.jimstatic.com/fonts/fonts/euclidcircular/regular.woff2 — 200 — 20.5 KiB — 84 ms — h3https://webteam.jimstatic.com/fonts/fonts/euclidcircular/medium.woff2webteam.jimstatic.com/fonts/fonts/e... https://webteam.jimstatic.com/fonts/fonts/euclidcircular/medium.woff2 — 200 — 20.5 KiB — 101 ms — h3https://webteam.jimstatic.com/fonts/fonts/euclidcircular/semibold.woff2webteam.jimstatic.com/fonts/fonts/e... https://webteam.jimstatic.com/fonts/fonts/euclidcircular/semibold.woff2 — 200 — 20.4 KiB — 101 ms — h3https://webteam.jimstatic.com/fonts/common/euclidcircular-regular.csswebteam.jimstatic.com/fonts/common/... https://webteam.jimstatic.com/fonts/common/euclidcircular-regular.css — 200 — 977 B — 55 ms — h3https://webteam.jimstatic.com/fonts/common/euclidcircular-semibold.csswebteam.jimstatic.com/fonts/common/... https://webteam.jimstatic.com/fonts/common/euclidcircular-semibold.css — 200 — 957 B — 59 ms — h3https://webteam.jimstatic.com/fonts/common/euclidcircular-medium.csswebteam.jimstatic.com/fonts/common/... https://webteam.jimstatic.com/fonts/common/euclidcircular-medium.css — 200 — 954 B — 56 ms — h3https://www.jimdo.com/static/fa0ddceeeefa0e40a7b7284960dab992/aea34/1.webpwww.jimdo.com/static/fa0ddceeeefa0e... https://www.jimdo.com/static/fa0ddceeeefa0e40a7b7284960dab992/aea34/1.webp — 200 — 114.6 KiB — 119 ms — h2https://www.jimdo.com/static/44e0417c6ca78f208a606df25381f44b/aea34/2.webpwww.jimdo.com/static/44e0417c6ca78f... https://www.jimdo.com/static/44e0417c6ca78f208a606df25381f44b/aea34/2.webp — 200 — 156.4 KiB — 121 ms — h2https://www.jimdo.com/static/651448ea3db4d7cfc31eb3a22a58e39d/1dfb9/3.webpwww.jimdo.com/static/651448ea3db4d7... https://www.jimdo.com/static/651448ea3db4d7cfc31eb3a22a58e39d/1dfb9/3.webp — 200 — 148.6 KiB — 182 ms — h3https://www.jimdo.com/static/b3c253c44dae8322c453978842fbc44e/aea34/4.webpwww.jimdo.com/static/b3c253c44dae83... https://www.jimdo.com/static/b3c253c44dae8322c453978842fbc44e/aea34/4.webp — 200 — 105.8 KiB — 179 ms — h3https://www.jimdo.com/static/14e868db28655cad13f5b3a52e331dc2/aea34/5.webpwww.jimdo.com/static/14e868db28655c... https://www.jimdo.com/static/14e868db28655cad13f5b3a52e331dc2/aea34/5.webp — 200 — 96.0 KiB — 179 ms — h3https://www.jimdo.com/manifest.jsonwww.jimdo.com/manifest.json https://www.jimdo.com/manifest.json — 200 — 1.0 KiB — 76 ms — h3https://www.jimdo.com/static/9941a3644ccd8157958ad983e890363a/aea34/6.webpwww.jimdo.com/static/9941a3644ccd81... https://www.jimdo.com/static/9941a3644ccd8157958ad983e890363a/aea34/6.webp — 200 — 158.7 KiB — 206 ms — h3https://www.jimdo.com/static/9e2fa98d10ea8b750b80d7e3c207d526/aea34/7.webpwww.jimdo.com/static/9e2fa98d10ea8b... https://www.jimdo.com/static/9e2fa98d10ea8b750b80d7e3c207d526/aea34/7.webp — 200 — 131.1 KiB — 202 ms — h3https://www.jimdo.com/webpack-runtime-ecfdc5f5819c6682809b.jswww.jimdo.com/webpack-runtime-ecfdc... https://www.jimdo.com/webpack-runtime-ecfdc5f5819c6682809b.js — 200 — 8.1 KiB — 108 ms — h3https://www.jimdo.com/framework-7cbf8ffa0f29f35e91be.jswww.jimdo.com/framework-7cbf8ffa0f2... https://www.jimdo.com/framework-7cbf8ffa0f29f35e91be.js — 200 — 45.0 KiB — 125 ms — h3https://www.jimdo.com/app-11a77669ac2f49d58fd2.jswww.jimdo.com/app-11a77669ac2f49d58... https://www.jimdo.com/app-11a77669ac2f49d58fd2.js — 200 — 86.4 KiB — 195 ms — h3data:image/svg+xml;charset=utf-8,%3Csvg%20height='1239'%20width='1377'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1239'%20width='1377'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='505'%20width='520'%20xmlns='http://www.w3.org/200…www.w3.org/200… data:image/svg+xml;charset=utf-8,%3Csvg%20height='505'%20width='520'%20xmlns='http://www.w3.org/200… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='868'%20width='1250'%20xmlns='http://www.w3.org/20…www.w3.org/20… data:image/svg+xml;charset=utf-8,%3Csvg%20height='868'%20width='1250'%20xmlns='http://www.w3.org/20… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='1116'%20width='2466'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1116'%20width='2466'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='487'%20width='550'%20xmlns='http://www.w3.org/200…www.w3.org/200… data:image/svg+xml;charset=utf-8,%3Csvg%20height='487'%20width='550'%20xmlns='http://www.w3.org/200… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='1287'%20width='1264'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1287'%20width='1264'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='1190'%20width='1841'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1190'%20width='1841'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='1190'%20width='1842'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1190'%20width='1842'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='1792'%20width='1815'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1792'%20width='1815'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datadata:image/svg+xml;charset=utf-8,%3Csvg%20height='1085'%20width='1152'%20xmlns='http://www.w3.org/2…www.w3.org/2… data:image/svg+xml;charset=utf-8,%3Csvg%20height='1085'%20width='1152'%20xmlns='http://www.w3.org/2… — 200 — 0 B — 0 ms — datahttps://www.jimdo.com/static/973ef1a0215a52e9f79c50d647436476/a9492/hero-desktop.webpwww.jimdo.com/static/973ef1a0215a52... https://www.jimdo.com/static/973ef1a0215a52e9f79c50d647436476/a9492/hero-desktop.webp — 200 — 138.6 KiB — 158 ms — h3
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 935 ms LCP 1.3 shttps://jimdo.com// https://jimdo.com/ — 301 — 186 B — 60 ms — h2https://www.jimdo.com/www.jimdo.com/ https://www.jimdo.com/ — 200 — 75.5 KiB — 207 ms — h2https://webteam.jimstatic.com/fonts/fonts/euclidcircular/regular.woff2webteam.jimstatic.com/fonts/fonts/e... https://webteam.jimstatic.com/fonts/fonts/euclidcircular/regular.woff2 — 200 — 20.5 KiB — 84 ms — h3https://webteam.jimstatic.com/fonts/fonts/euclidcircular/medium.woff2webteam.jimstatic.com/fonts/fonts/e... https://webteam.jimstatic.com/fonts/fonts/euclidcircular/medium.woff2 — 200 — 20.5 KiB — 101 ms — h3https://webteam.jimstatic.com/fonts/fonts/euclidcircular/semibold.woff2webteam.jimstatic.com/fonts/fonts/e... https://webteam.jimstatic.com/fonts/fonts/euclidcircular/semibold.woff2 — 200 — 20.4 KiB — 101 ms — h3https://webteam.jimstatic.com/fonts/common/euclidcircular-regular.csswebteam.jimstatic.com/fonts/common/... 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h3https://web.cmp.usercentrics.eu/ui/v/3.116.0/getToastifyStyle.4f0a73d7.jsweb.cmp.usercentrics.eu/ui/v/3.116.... https://web.cmp.usercentrics.eu/ui/v/3.116.0/getToastifyStyle.4f0a73d7.js — 200 — 716 B — 23 ms — h3https://v1.api.service.cmp.usercentrics.eu/latest/i18n/en/GDPR/k1JwB2Dk_/300.91.440?theme=ucv1.api.service.cmp.usercentrics.eu/... https://v1.api.service.cmp.usercentrics.eu/latest/i18n/en/GDPR/k1JwB2Dk_/300.91.440?theme=uc — 200 — 18.4 KiB — 22 ms — h3https://faro-collector-prod-eu-west-2.grafana.net/collect/4706090e4c91ec276075261da40eccc7faro-collector-prod-eu-west-2.grafa... https://faro-collector-prod-eu-west-2.grafana.net/collect/4706090e4c91ec276075261da40eccc7 — 202 — 147 B — 36 ms — http/1.1https://at.prod.jimdo.systems/richat.prod.jimdo.systems/rich https://at.prod.jimdo.systems/rich — 200 — 121 B — 61 ms — h2https://at.prod.jimdo.systems/richat.prod.jimdo.systems/rich https://at.prod.jimdo.systems/rich — 200 — 121 B — 67 ms — h2https://at.prod.jimdo.systems/anonat.prod.jimdo.systems/anon https://at.prod.jimdo.systems/anon — 204 — 118 B — 71 ms — h2
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 565ms · 392KB · $2/mo
www.jimdo.com
Other
Optional
Execution 166ms
Transfer 45 KB
Monthly Cost $1/mo
www.jimdo.com
Other
Optional
Execution 162ms
Transfer 75 KB
Monthly Cost $1/mo
Unattributable
Other
Optional
Execution 128ms
Transfer 0 KB
Monthly Cost $0/mo
Google Tag Manager
Tag Manager
Optional
Execution 59ms
Transfer 185 KB
Unused 44%
Monthly Cost $0/mo
www.jimdo.com
Other
Optional
Execution 50ms
Transfer 86 KB
Unused 47%
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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