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Performance

· 23 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
88
GRADE
B
FIX
0
REVIEW
10
PASS
9
INFO
4

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

Mobile Desktop
92
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
95
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.

941 ms

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

1.41 s

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

108 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.

1.31 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.

1.63 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
23
9 PASS 10 REVIEW
B
Page Weight Budget
1.5 MB transferred, 20 requests
REVIEW
1.5 MB transferred, 20 requests
Info::
Page weighs 2.2 MB (1.5 MB transferred)
Warning::
Images are 1.3 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.3 MB
Info::
20 HTTP requests
Info::
Estimated 0.32 g CO2 per page load
1.5 MB / 2.4 MB budget
1.5 MB transferred
20 requests
0.32 g CO2 per page load
Images 1.3 MiB 87%
JavaScript 179.0 KiB 11%
HTML 19.3 KiB 1%
CSS 4.8 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit

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

C
Image Optimization
Action
13 images, 0 KB saveable
REVIEW
13 images, 0 KB saveable
Warning::
https://b2b.puzzlean.com.ua/wp-content/uploads/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://b2b.puzzlean.com.ua/wp-content/uploads/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://b2b.puzzlean.com.ua/wp-content/uploads/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://b2b.puzzlean.com.ua/wp-content/uploads/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://b2b.puzzlean.com.ua/wp-content/uploads/202... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://b2b.puzzlean.com.ua/puzzlean-assets/logo_p... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
13 images 1.3 MB
0 oversized -0 KB
13 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 Execution Cost
566ms total JS execution
REVIEW
566ms total JS execution
Info::
Unattributable: 204ms CPU time
Info::
https://b2b.puzzlean.com.ua/: 158ms CPU time
Info::
https://connect.facebook.net/en_US/fbevents.js: 102ms CPU time
Info::
https://connect.facebook.net/signals/config/211001...: 102ms CPU time
Info::
Third-party scripts: 204ms (36% of total)

Main Thread Breakdown

Other 41% Script Evaluation 34% Style & Layout 13% Script Parsing & Compilation 7%
ScriptTotalScriptingParse/CompileParty
Unattributable204ms2ms0ms1st
https://b2b.puzzlean.com.ua/158ms17ms2ms1st
https://connect.facebook.net/en_US/fbevents.js102ms79ms21ms3rd
https://connect.facebook.net/signals/config/211001674259912?v=2.9.385&r=c2&domain=b2b.puzzlean.com.ua&hme=1a72ec78e057d90ba48afa55a82b063b1c9b6ab7c0155009fecc72226a622ed2&ex_m=113%2C218%2C164%2C25%2C78%2C79%2C156%2C74%2C73%2C11%2C174%2C98%2C19%2C148%2C136%2C43%2C81%2C86%2C144%2C169%2C176%2C29%2C17%2C30%2C31%2C32%2C34%2C52%2C157%2C83%2C121%2C21%2C23%2C48%2C44%2C46%2C45%2C91%2C100%2C104%2C119%2C155%2C158%2C50%2C120%2C27%2C24%2C128%2C75%2C40%2C160%2C159%2C161%2C152%2C150%2C28%2C39%2C63%2C118%2C171%2C76%2C20%2C123%2C89%2C72%2C22%2C93%2C94%2C125%2C92%2C146%2C145%2C149%2C105%2C170%2C173%2C38%2C53%2C122%2C51%2C8%2C4%2C5%2C7%2C6%2C3%2C99%2C110%2C177%2C185%2C232%2C80%2C245%2C244%2C243%2C14%2C26%2C37%2C59%2C112%2C65%2C10%2C69%2C106%2C107%2C108%2C114%2C139%2C35%2C33%2C141%2C142%2C143%2C138%2C137%2C165%2C82%2C168%2C166%2C167%2C54%2C64%2C132%2C18%2C172%2C49%2C293%2C294%2C292%2C307%2C329%2C225%2C214%2C66%2C215%2C213%2C332%2C323%2C56%2C226%2C116%2C140%2C88%2C130%2C58%2C129%2C135%2C134%2C62%2C70%2C68%2C162%2C84%2C85%2C124%2C41%2C36%2C57%2C60%2C109%2C175%2C1%2C133%2C16%2C131%2C12%2C2%2C61%2C101%2C15%2C71%2C67%2C127%2C97%2C96%2C178%2C179%2C102%2C103%2C9%2C111%2C55%2C153%2C95%2C87%2C77%2C126%2C115%2C47%2C154%2C0%2C90%2C147%2C151%2C163%2C42%2C117%2C13%2C180102ms88ms14ms3rd
B
JS Bundles
5 scripts, 57 KB unused
REVIEW
5 scripts, 57 KB unused
Warning::
https://connect.facebook.net/en_US/fbevents.js: 34 KB unused (33%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://connect.facebook.net/signals/config/211001...: 22 KB unused (33%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 57 KB
57 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://connect.facebook.net/en_US/fbevents.js105 KB34 KB (33%)✓3rd
https://connect.facebook.net/signals/config/211001674259912?v=2.9.385&r=c2&domain=b2b.puzzlean.com.ua&hme=1a72ec78e057d90ba48afa55a82b063b1c9b6ab7c0155009fecc72226a622ed2&ex_m=113%2C218%2C164%2C25%2C78%2C79%2C156%2C74%2C73%2C11%2C174%2C98%2C19%2C148%2C136%2C43%2C81%2C86%2C144%2C169%2C176%2C29%2C17%2C30%2C31%2C32%2C34%2C52%2C157%2C83%2C121%2C21%2C23%2C48%2C44%2C46%2C45%2C91%2C100%2C104%2C119%2C155%2C158%2C50%2C120%2C27%2C24%2C128%2C75%2C40%2C160%2C159%2C161%2C152%2C150%2C28%2C39%2C63%2C118%2C171%2C76%2C20%2C123%2C89%2C72%2C22%2C93%2C94%2C125%2C92%2C146%2C145%2C149%2C105%2C170%2C173%2C38%2C53%2C122%2C51%2C8%2C4%2C5%2C7%2C6%2C3%2C99%2C110%2C177%2C185%2C232%2C80%2C245%2C244%2C243%2C14%2C26%2C37%2C59%2C112%2C65%2C10%2C69%2C106%2C107%2C108%2C114%2C139%2C35%2C33%2C141%2C142%2C143%2C138%2C137%2C165%2C82%2C168%2C166%2C167%2C54%2C64%2C132%2C18%2C172%2C49%2C293%2C294%2C292%2C307%2C329%2C225%2C214%2C66%2C215%2C213%2C332%2C323%2C56%2C226%2C116%2C140%2C88%2C130%2C58%2C129%2C135%2C134%2C62%2C70%2C68%2C162%2C84%2C85%2C124%2C41%2C36%2C57%2C60%2C109%2C175%2C1%2C133%2C16%2C131%2C12%2C2%2C61%2C101%2C15%2C71%2C67%2C127%2C97%2C96%2C178%2C179%2C102%2C103%2C9%2C111%2C55%2C153%2C95%2C87%2C77%2C126%2C115%2C47%2C154%2C0%2C90%2C147%2C151%2C163%2C42%2C117%2C13%2C18068 KB22 KB (33%)✓3rd
https://b2b.puzzlean.com.ua/wp-content/themes/puzzlean-theme/assets/js/animations.js0 KB—✓1st
blob:https://b2b.puzzlean.com.ua/2e0fa574-fa17-4f2b-88ec-d8e0148370ca-0 KB—✓3rd
https://b2b.puzzlean.com.ua/wp-includes/js/wp-emoji-release.min.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

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
B
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
REVIEW
Main response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
B
Main HTML Cache-Control
Main HTML max-age=3600 (~60min)
REVIEW
Main HTML max-age=3600 (~60min)
Info::
Main HTML cached for 60 minutes -- mild staleness risk
Got: max-age=3600
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
20 resources · 1.5 MB · 57 KB savings available
REVIEW
20 resources · 1.5 MB · 57 KB savings available
Warning::
Page weight 1.5 MB exceeds 1 MB target by 552 KB
Got: 1.5 MB Expected: ≤ 1 MB
Info::
~57 KB of savings available
Info::
4 third-party resources (11% of weight)
Info::
2 resources over 200KB
20 resources · 1.5 MiB · 4 third-party 552.0 KiB over 1MB target
Image 87% · 1.3 MiB
JavaScript 11% · 179.0 KiB
Document 1% · 19.3 KiB
CSS 0% · 4.8 KiB

~56.5 KiB of savings available

Remove unused JavaScript: 56.5 KiB
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

A+
Third-Party Impact
11% third-party, 0 ms blocking
PASS
11% third-party, 0 ms blocking
Info::
Third-party code accounts for 11% of page weight (173.2 KiB of 1.5 MiB)
Info::
Third-party blocking time is low (0 ms)
89%
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
No web fonts (system fonts)
PASS
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
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+
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: Accept-Encoding,User-Agent
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::
`Last-Modified` present -- timestamp-based conditional GET supported
Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.
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::
Last-Modified header present
Cache-Control

max-age=3600

DirectiveValueMeaning
max-age3600Cache for 1 hour
Effective TTL: 3600 seconds
Network Waterfall
20 requests over 2010ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 941 ms LCP 1.4 shttps://b2b.puzzlean.com.ua// https://b2b.puzzlean.com.ua/ — 200 — 19.3 KiB — 700 ms — h2https://b2b.puzzlean.com.ua/wp-content/themes/puzzlean-theme/assets/css/main.css/wp-content/themes/puzzlean-theme/a... https://b2b.puzzlean.com.ua/wp-content/themes/puzzlean-theme/assets/css/main.css — 200 — 4.8 KiB — 520 ms — h2https://b2b.puzzlean.com.ua/puzzlean-assets/logo_puzzlean.svg/puzzlean-assets/logo_puzzlean.svg https://b2b.puzzlean.com.ua/puzzlean-assets/logo_puzzlean.svg — 200 — 3.2 KiB — 518 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/11.jpg/wp-content/uploads/2026/08/11.jpg https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/11.jpg — 200 — 158.2 KiB — 516 ms — h2https://b2b.puzzlean.com.ua/wp-content/themes/puzzlean-theme/assets/js/animations.js/wp-content/themes/puzzlean-theme/a... https://b2b.puzzlean.com.ua/wp-content/themes/puzzlean-theme/assets/js/animations.js — 200 — 512 B — 191 ms — h2https://connect.facebook.net/en_US/fbevents.jsconnect.facebook.net/en_US/fbevents... https://connect.facebook.net/en_US/fbevents.js — 200 — 105.1 KiB — 30 ms — h3https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/8.jpg/wp-content/uploads/2026/08/8.jpg https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/8.jpg — 200 — 193.6 KiB — 660 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/7.jpg/wp-content/uploads/2026/08/7.jpg https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/7.jpg — 200 — 95.9 KiB — 539 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/6.jpg/wp-content/uploads/2026/08/6.jpg https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/6.jpg — 200 — 93.2 KiB — 541 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/5.jpg/wp-content/uploads/2026/08/5.jpg https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/5.jpg — 200 — 75.5 KiB — 525 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/A6703389.jpg/wp-content/uploads/2026/08/A670338... https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/A6703389.jpg — 200 — 77.0 KiB — 525 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/A6703393.jpg/wp-content/uploads/2026/08/A670339... https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/A6703393.jpg — 200 — 83.9 KiB — 540 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/FullSizeRender6-1.jpg/wp-content/uploads/2026/08/FullSiz... https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/FullSizeRender6-1.jpg — 200 — 203.8 KiB — 660 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/FullSizeRender7-1.jpg/wp-content/uploads/2026/08/FullSiz... https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/FullSizeRender7-1.jpg — 200 — 131.6 KiB — 694 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/IMG_0441-1.jpg/wp-content/uploads/2026/08/IMG_044... https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/IMG_0441-1.jpg — 200 — 202.7 KiB — 657 ms — h2https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/IMG_0979-1.jpg/wp-content/uploads/2026/08/IMG_097... https://b2b.puzzlean.com.ua/wp-content/uploads/2026/08/IMG_0979-1.jpg — 200 — 54.3 KiB — 663 ms — h2https://connect.facebook.net/signals/config/211001674259912?v=2.9.385&r=c2&domain=b2b.puzzlean.com.ua&hme=1a72ec78e057d90ba48afa55a82b063b1c9b6ab7c0155009fecc72226a622ed2&ex_m=113%2C218%2C164%2C25%2C78%2C79%2C156%2C74%2C73%2C11%2C174%2C98%2C19%2C148%2C136%2C43%2C81%2C86%2C144%2C169%2C176%2C29%2C17%2C30%2C31%2C32%2C34%2C52%2C157%2C83%2C121%2C21%2C23%2C48%2C44%2C46%2C45%2C91%2C100%2C104%2C119%2C155%2C158%2C50%2C120%2C27%2C24%2C128%2C75%2C40%2C160%2C159%2C161%2C152%2C150%2C28%2C39%2C63%2C118%2C171%2C76%2C20%2C123%2C89%2C72%2C22%2C93%2C94%2C125%2C92%2C146%2C145%2C149%2C105%2C170%2C173%2C38%2C53%2C122%2C51%2C8%2C4%2C5%2C7%2C6%2C3%2C99%2C110%2C177%2C185%2C232%2C80%2C245%2C244%2C243%2C14%2C26%2C37%2C59%2C112%2C65%2C10%2C69%2C106%2C107%2C108%2C114%2C139%2C35%2C33%2C141%2C142%2C143%2C138%2C137%2C165%2C82%2C168%2C166%2C167%2C54%2C64%2C132%2C18%2C172%2C49%2C293%2C294%2C292%2C307%2C329%2C225%2C214%2C66%2C215%2C213%2C332%2C323%2C56%2C226%2C116%2C140%2C88%2C130%2C58%2C129%2C135%2C134%2C62%2C70%2C68%2C162%2C84%2C85%2C124%2C41%2C36%2C57%2C60%2C109%2C175%2C1%2C133%2C16%2C131%2C12%2C2%2C61%2C101%2C15%2C71%2C67%2C127%2C97%2C96%2C178%2C179%2C102%2C103%2C9%2C111%2C55%2C153%2C95%2C87%2C77%2C126%2C115%2C47%2C154%2C0%2C90%2C147%2C151%2C163%2C42%2C117%2C13%2C180connect.facebook.net/signals/config... 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— 200 — 20 B — 18 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
36% of JavaScript execution is third-party
First-party Third-party 204ms · 173KB · ₴113/mo
Facebook Pixel
Advertising
Costly
Execution 102ms
Transfer 105 KB
Unused 33%
Monthly Cost ₴57/mo
Facebook Pixel
Advertising
Costly
Execution 102ms
Transfer 68 KB
Unused 33%
Monthly Cost ₴56/mo

These scripts may cost more than they're worth

  • Facebook Pixel adds 102ms and costs ~₴57/month
  • Facebook Pixel adds 102ms and costs ~₴56/month

Facebook Pixel takes 102ms 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

Facebook Pixel takes 102ms 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 (2026-07-26 — 2026-08-22)

LCP (p75)

1802 ms

87% good

INP (p75)

0 ms

0% good

CLS (p75)

0.000

94% good

FCP (p75)

1700 ms

TTFB (p75)

1302 ms

Image Optimization
73 images, 783 KB total, 733 KB wasted
INFO

Image Optimization Audit

Total Images

73

Total Size

783 KB

Oversized

7

Wasted

733 KB

73 missing dimensions 2 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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