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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
72
GRADE
C
FIX
5
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
63
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
93
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.

1.65 s

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

2.33 s

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

351 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.053

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

2.08 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.

3.56 s

Page Load Progression

453 ms
906 ms
1.4 s
1.8 s
2.3 s
2.7 s
3.2 s
3.6 s
Checks
15
5 PASS 3 REVIEW 5 FIX
F
Page Weight Budget
Action
8.5 MB transferred, 72 requests
FIX
8.5 MB transferred, 72 requests
Critical::
Page weighs 29.8 MB (8.5 MB transferred)
Info::
Fonts are 788 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 788 KB
Warning::
JavaScript is 589 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 589 KB
Info::
72 HTTP requests
Info::
Estimated 1.8 g CO2 per page load
8.5 MB / 2.4 MB budget
8.5 MB transferred
72 requests
1.8 g CO2 per page load
Other 6.6 MiB 77%
Fonts 787.7 KiB 9%
JavaScript 589.2 KiB 7%
Images 377.0 KiB 4%
Other 90.1 KiB 1%
CSS 71.9 KiB 1%
HTML 45.4 KiB 1%
Other 9.4 KiB 0%
Other 2.2 KiB 0%
Other 537 B 0%
0 2.4 MB 4.9 MB
Over budget

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

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 (8.5 MiB of 8.5 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2800ms total JS execution
FIX
2800ms total JS execution
Warning::
https://www.here.com/_next/static/chunks/2f4795b2-...: 1079ms CPU time
Warning::
https://www.here.com/_next/static/chunks/552-ea968...: 670ms CPU time
Warning::
https://www.here.com/: 457ms CPU time
Warning::
Unattributable: 319ms CPU time
Info::
https://www.here.com/_next/static/chunks/279-61f25...: 123ms CPU time
Warning::
Third-party scripts: 2800ms (100% of total)

Main Thread Breakdown

Script Evaluation 55% Other 20% Style & Layout 12% Script Parsing & Compilation 5% Garbage Collection 3%
ScriptTotalScriptingParse/CompileParty
https://www.here.com/_next/static/chunks/2f4795b2-a291ac5e844adca2.js1079ms809ms3ms3rd
https://www.here.com/_next/static/chunks/552-ea968a77fab22b45.js670ms569ms4ms3rd
https://www.here.com/457ms35ms107ms3rd
Unattributable319ms32ms0ms3rd
https://www.here.com/_next/static/chunks/279-61f25823861eb048.js123ms36ms3ms3rd
https://www.here.com/_next/static/chunks/app/%5B%5B...slug%5D%5D/page-4c687db32cea016b.js96ms25ms4ms3rd
https://app-ab31.marketo.com/js/forms2/js/forms2.min.js56ms35ms5ms3rd
D
Page Weight Inventory
Action
72 resources · 8.5 MB · 212 KB savings available
FIX
72 resources · 8.5 MB · 212 KB savings available
Warning::
Page weight 7.5 MB over 1MB target
Got: 8.5 MB Expected: ≤ 1 MB
Info::
~212 KB of savings available
Warning::
71 third-party resources (100% of weight)
Info::
5 resources over 200KB
72 resources · 8.5 MiB · 71 third-party 7.5 MiB over 1MB target
Media 77% · 6.6 MiB
Font 9% · 787.7 KiB
JavaScript 7% · 589.2 KiB
Image 4% · 386.1 KiB
Other 1% · 93.0 KiB
CSS 1% · 71.9 KiB
Document 1% · 45.5 KiB

~212.3 KiB of savings available

Remove unused JavaScript: 212.3 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.

B
Image Optimization
12 images, 0 KB saveable
REVIEW
12 images, 0 KB saveable
Info::
All images are well-optimized
12 images 339 KB
0 oversized -0 KB
7 legacy format
0 missing dimensions CLS risk
C
JS Bundles
Action
25 scripts, 212 KB unused
REVIEW
25 scripts, 212 KB unused
Warning::
https://app-ab31.marketo.com/js/forms2/js/forms2.m...: 52 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.here.com/_next/static/chunks/494-c70bc...: 49 KB unused (87%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://tags.tiqcdn.com/utag/here/herecomcorporate...: 29 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.here.com/_next/static/chunks/47-9d239b...: 28 KB unused (37%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.here.com/_next/static/chunks/844-97e49...: 27 KB unused (80%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 212 KB
212 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://app-ab31.marketo.com/js/forms2/js/forms2.min.js68 KB52 KB (77%)✓3rd
https://www.here.com/_next/static/chunks/494-c70bcdb9608f1fbf.js58 KB49 KB (87%)✓3rd
https://tags.tiqcdn.com/utag/here/herecomcorporate/prod/utag.js52 KB29 KB (57%)✓3rd
https://www.here.com/_next/static/chunks/47-9d239b5a5ffa1436.js77 KB28 KB (37%)✓3rd
https://www.here.com/_next/static/chunks/844-97e49dc3b5e571a7.js36 KB27 KB (80%)✓3rd
https://www.here.com/_next/static/chunks/279-61f25823861eb048.js56 KB27 KB (50%)✓3rd
https://www.here.com/_next/static/chunks/main-app-9a01273a7f2f0984.js2 KB—✓3rd
https://www.here.com/_next/static/chunks/webpack-e0bdb825c0cd90da.js4 KB—✓3rd
https://www.here.com/_next/static/chunks/890-8e1f839b04419223.js12 KB—✓3rd
https://www.here.com/_next/static/chunks/app/%5B%5B...slug%5D%5D/error-ca859e56bace307b.js4 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
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+
Font Loading
7 fonts (788 KB)
PASS
7 fonts (788 KB)
Info::
7 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

7

788 KB total

Render-blocking

0

of 7

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.7 s LCP 2.3 shttps://www.here.com/_next/static/media/FiraGO-Bold.a0025726.woff2FiraGO-Bold.a0025726.woff2 https://www.here.com/_next/static/media/FiraGO-Bold.a0025726.woff2 — 255.3 KiB — 102 ms — font-display: swaphttps://www.here.com/_next/static/media/FiraGO-Medium.55351f37.woff2FiraGO-Medium.55351f37.... https://www.here.com/_next/static/media/FiraGO-Medium.55351f37.woff2 — 255.8 KiB — 64 ms — font-display: swaphttps://www.here.com/_next/static/media/FiraGO-Regular.4dac550f.woff2FiraGO-Regular.4dac550f... https://www.here.com/_next/static/media/FiraGO-Regular.4dac550f.woff2 — 249.0 KiB — 113 ms — font-display: swaphttps://www.here.com/_next/static/media/hds-iconlibrary-core-ui-16px.377d5356.woff2hds-iconlibrary-core-ui... https://www.here.com/_next/static/media/hds-iconlibrary-core-ui-16px.377d5356.woff2 — 7.9 KiB — 106 ms — font-display: swaphttps://www.here.com/_next/static/media/hds-iconlibrary-core-ui-8px.e3b51c22.woff2hds-iconlibrary-core-ui... https://www.here.com/_next/static/media/hds-iconlibrary-core-ui-8px.e3b51c22.woff2 — 3.4 KiB — 31 ms — font-display: swaphttps://www.here.com/_next/static/media/hds-iconlibrary-third-party-logos-24px.eb425479.woff2hds-iconlibrary-third-p... https://www.here.com/_next/static/media/hds-iconlibrary-third-party-logos-24px.eb425479.woff2 — 5.7 KiB — 38 ms — font-display: swaphttps://www.here.com/_next/static/media/hds-iconlibrary-core-ui-24px.3f02d47d.woff2hds-iconlibrary-core-ui... https://www.here.com/_next/static/media/hds-iconlibrary-core-ui-24px.3f02d47d.woff2 — 10.6 KiB — 71 ms — font-display: swap
FiraGO-Bold.a0025726.woff2 woff2 swap
Size 255 KB
Load time 102 ms
Start 727 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
FiraGO-Medium.55351f37.... woff2 swap
Size 256 KB
Load time 64 ms
Start 733 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
FiraGO-Regular.4dac550f... woff2 swap
Size 249 KB
Load time 113 ms
Start 733 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
hds-iconlibrary-core-ui... woff2 swap
Size 8 KB
Load time 106 ms
Start 733 ms
Risk FOUT — text flashes from fallback to web font
hds-iconlibrary-core-ui... woff2 swap
Size 3 KB
Load time 31 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
hds-iconlibrary-third-p... woff2 swap
Size 6 KB
Load time 38 ms
Start 1.6 s
Risk FOUT — text flashes from fallback to web font
hds-iconlibrary-core-ui... woff2 swap
Size 11 KB
Load time 71 ms
Start 1.6 s
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 ~380 KB and ~760 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
Network Waterfall
72 requests over 2994ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.7 s LCP 2.3 shttps://here.com// https://here.com/ — 301 — 83 B — 315 ms — h2https://www.here.com/www.here.com/ https://www.here.com/ — 200 — 42.1 KiB — 192 ms — h2https://www.here.com/icon/en.svgwww.here.com/icon/en.svg https://www.here.com/icon/en.svg — 200 — 2.8 KiB — 72 ms — h2https://www.here.com/icon/jp.svgwww.here.com/icon/jp.svg https://www.here.com/icon/jp.svg — 200 — 2.2 KiB — 70 ms — h2https://www.here.com/_next/static/css/c263f21dcaa707a5.csswww.here.com/_next/static/css/c263f... https://www.here.com/_next/static/css/c263f21dcaa707a5.css — 200 — 5.0 KiB — 78 ms — h2https://www.here.com/_next/static/css/cc848a0dd9dd43a9.csswww.here.com/_next/static/css/cc848... https://www.here.com/_next/static/css/cc848a0dd9dd43a9.css — 200 — 18.2 KiB — 86 ms — h2https://www.here.com/_next/static/css/c101dd2e29bf381b.csswww.here.com/_next/static/css/c101d... https://www.here.com/_next/static/css/c101dd2e29bf381b.css — 200 — 8.6 KiB — 91 ms — h2https://www.here.com/_next/static/css/a94deb4675677438.csswww.here.com/_next/static/css/a94de... https://www.here.com/_next/static/css/a94deb4675677438.css — 200 — 7.9 KiB — 81 ms — h2https://www.here.com/_next/static/css/d28e46d8eec39c7c.csswww.here.com/_next/static/css/d28e4... https://www.here.com/_next/static/css/d28e46d8eec39c7c.css — 200 — 26.0 KiB — 72 ms — h2https://www.here.com/_next/static/css/58f4444584148f0c.csswww.here.com/_next/static/css/58f44... https://www.here.com/_next/static/css/58f4444584148f0c.css — 200 — 2.1 KiB — 80 ms — h2https://tags.tiqcdn.com/utag/here/herecomcorporate/prod/utag.sync.jstags.tiqcdn.com/utag/here/herecomco... https://tags.tiqcdn.com/utag/here/herecomcorporate/prod/utag.sync.js — 200 — 990 B — 25 ms — h2https://tags.tiqcdn.com/utag/here/herecomcorporate/prod/utag.jstags.tiqcdn.com/utag/here/herecomco... https://tags.tiqcdn.com/utag/here/herecomcorporate/prod/utag.js — 200 — 52.3 KiB — 29 ms — h2https://app-ab31.marketo.com/js/forms2/js/forms2.min.jsapp-ab31.marketo.com/js/forms2/js/f... https://app-ab31.marketo.com/js/forms2/js/forms2.min.js — 200 — 67.5 KiB — 235 ms — h2https://js.api.here.com/v3/3.1/mapsjs-ui.cssjs.api.here.com/v3/3.1/mapsjs-ui.cs... https://js.api.here.com/v3/3.1/mapsjs-ui.css — 200 — 4.1 KiB — 18 ms — h2https://images.here.com/x7rx8ayph7ee/3UGqCJmderlsfEPIv8VLD/10da4321039097072de4535493b10ebb/HERE_2025_hero-Desktop-3840%C3%83_1536.jpg?w=1440&q=80&fm=webpimages.here.com/x7rx8ayph7ee/3UGqCJ... https://images.here.com/x7rx8ayph7ee/3UGqCJmderlsfEPIv8VLD/10da4321039097072de4535493b10ebb/HERE_2025_hero-Desktop-3840%C3%83_1536.jpg?w=1440&q=80&fm=webp — 200 — 84.6 KiB — 170 ms — h2https://www.here.com/site.webmanifestwww.here.com/site.webmanifest https://www.here.com/site.webmanifest — 200 — 2.2 KiB — 73 ms — h2https://www.here.com/_next/static/chunks/webpack-e0bdb825c0cd90da.jswww.here.com/_next/static/chunks/we... https://www.here.com/_next/static/chunks/webpack-e0bdb825c0cd90da.js — 200 — 4.0 KiB — 107 ms — h2https://www.here.com/_next/static/chunks/2f4795b2-a291ac5e844adca2.jswww.here.com/_next/static/chunks/2f... https://www.here.com/_next/static/chunks/2f4795b2-a291ac5e844adca2.js — 200 — 55.3 KiB — 130 ms — h2https://www.here.com/_next/static/chunks/552-ea968a77fab22b45.jswww.here.com/_next/static/chunks/55... https://www.here.com/_next/static/chunks/552-ea968a77fab22b45.js — 200 — 46.8 KiB — 91 ms — h2https://www.here.com/_next/static/chunks/main-app-9a01273a7f2f0984.jswww.here.com/_next/static/chunks/ma... https://www.here.com/_next/static/chunks/main-app-9a01273a7f2f0984.js — 200 — 2.4 KiB — 71 ms — h2https://www.here.com/_next/static/chunks/279-61f25823861eb048.jswww.here.com/_next/static/chunks/27... https://www.here.com/_next/static/chunks/279-61f25823861eb048.js — 200 — 55.9 KiB — 108 ms — h2https://www.here.com/_next/static/chunks/890-8e1f839b04419223.jswww.here.com/_next/static/chunks/89... https://www.here.com/_next/static/chunks/890-8e1f839b04419223.js — 200 — 12.2 KiB — 39 ms — h2https://www.here.com/_next/static/chunks/app/%5B%5B...slug%5D%5D/error-ca859e56bace307b.jswww.here.com/_next/static/chunks/ap... https://www.here.com/_next/static/chunks/app/%5B%5B...slug%5D%5D/error-ca859e56bace307b.js — 200 — 4.0 KiB — 44 ms — h2https://www.here.com/_next/static/chunks/962-fac44c2e7e5d4ee4.jswww.here.com/_next/static/chunks/96... https://www.here.com/_next/static/chunks/962-fac44c2e7e5d4ee4.js — 200 — 5.0 KiB — 98 ms — h2https://www.here.com/_next/static/chunks/47-9d239b5a5ffa1436.jswww.here.com/_next/static/chunks/47... https://www.here.com/_next/static/chunks/47-9d239b5a5ffa1436.js — 200 — 76.6 KiB — 125 ms — h2https://www.here.com/_next/static/chunks/494-c70bcdb9608f1fbf.jswww.here.com/_next/static/chunks/49... https://www.here.com/_next/static/chunks/494-c70bcdb9608f1fbf.js — 200 — 58.4 KiB — 126 ms — h2https://www.here.com/_next/static/chunks/437-c7edadd3c6de200b.jswww.here.com/_next/static/chunks/43... https://www.here.com/_next/static/chunks/437-c7edadd3c6de200b.js — 200 — 24.7 KiB — 54 ms — h2https://www.here.com/_next/static/chunks/app/%5B%5B...slug%5D%5D/page-4c687db32cea016b.jswww.here.com/_next/static/chunks/ap... https://www.here.com/_next/static/chunks/app/%5B%5B...slug%5D%5D/page-4c687db32cea016b.js — 200 — 33.2 KiB — 52 ms — h2https://www.here.com/_next/static/chunks/844-97e49dc3b5e571a7.jswww.here.com/_next/static/chunks/84... https://www.here.com/_next/static/chunks/844-97e49dc3b5e571a7.js — 200 — 35.9 KiB — 124 ms — h2https://www.here.com/_next/static/chunks/app/layout-98feebfe8bc6b53a.jswww.here.com/_next/static/chunks/ap... https://www.here.com/_next/static/chunks/app/layout-98feebfe8bc6b53a.js — 200 — 13.6 KiB — 96 ms — h2
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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 2800ms · 301KB · €30/mo
www.here.com
Other
Costly
Execution 1079ms
Transfer 55 KB
Monthly Cost €12/mo
www.here.com
Other
Costly
Execution 670ms
Transfer 47 KB
Monthly Cost €7/mo
www.here.com
Other
Costly
Execution 457ms
Transfer 42 KB
Monthly Cost €5/mo
Unattributable
Other
Costly
Execution 319ms
Transfer 0 KB
Monthly Cost €3/mo
www.here.com
Other
Optional
Execution 123ms
Transfer 56 KB
Unused 50%
Monthly Cost €1/mo
www.here.com
Other
Optional
Execution 96ms
Transfer 33 KB
Monthly Cost €1/mo
app-ab31.marketo.com
Other
Optional
Execution 56ms
Transfer 68 KB
Unused 77%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.here.com adds 1079ms and costs ~€12/month
  • www.here.com adds 670ms and costs ~€7/month
  • www.here.com adds 457ms and costs ~€5/month
  • Unattributable adds 319ms and costs ~€3/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

www.here.com takes 1079ms 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.here.com takes 670ms 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.here.com takes 457ms 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

Unattributable takes 319ms 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

50% of www.here.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

77% of app-ab31.marketo.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

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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