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Performance

· 25 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
90
GRADE
A
FIX
1
REVIEW
7
PASS
15
INFO
2

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

Mobile Desktop
80
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
92
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.

1.16 s

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

3.19 s

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

510 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.

2.10 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.

5.12 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
25
15 PASS 7 REVIEW 1 FIX
D
JS Execution Cost
Action
2128ms total JS execution
FIX
2128ms total JS execution
Warning::
Unattributable: 633ms CPU time
Warning::
https://scanracer.com/_next/static/immutable/chunk...: 409ms CPU time
Warning::
https://scanracer.com/fr: 367ms CPU time
Warning::
https://www.googletagmanager.com/gtag/js?id=G-D3PX...: 262ms CPU time
Warning::
https://scanracer.com/: 259ms CPU time
Info::
Third-party scripts: 262ms (12% of total)

Main Thread Breakdown

Script Evaluation 46% Other 33% Style & Layout 11% Script Parsing & Compilation 6%
ScriptTotalScriptingParse/CompileParty
Unattributable633ms8ms0ms1st
https://scanracer.com/_next/static/immutable/chunks/1q-51rmfqb9tp.js409ms347ms20ms1st
https://scanracer.com/fr367ms22ms8ms1st
https://www.googletagmanager.com/gtag/js?id=G-D3PXBDB4BH262ms202ms54ms3rd
https://scanracer.com/259ms238ms7ms1st
https://scanracer.com/_next/static/immutable/chunks/0tpup5h0nlfnu.js198ms179ms15ms1st
B
Page Weight Budget
1.2 MB transferred, 46 requests
REVIEW
1.2 MB transferred, 46 requests
Info::
Page weighs 2.3 MB (1.2 MB transferred)
Info::
46 HTTP requests
Info::
Estimated 0.25 g CO2 per page load
1.2 MB / 2.4 MB budget
1.2 MB transferred
46 requests
0.25 g CO2 per page load
Other 432.7 KiB 36%
JavaScript 414.4 KiB 34%
Images 217.8 KiB 18%
HTML 50.8 KiB 4%
Other 37.5 KiB 3%
Fonts 35.9 KiB 3%
CSS 27.6 KiB 2%
0 2.4 MB 4.9 MB
Under budget
B
JS Bundles
17 scripts, 150 KB unused
REVIEW
17 scripts, 150 KB unused
Warning::
https://www.googletagmanager.com/gtag/js?id=G-D3PX...: 81 KB unused (44%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://scanracer.com/_next/static/immutable/chunk...: 42 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://scanracer.com/_next/static/immutable/chunk...: 27 KB unused (38%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 150 KB
150 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.googletagmanager.com/gtag/js?id=G-D3PXBDB4BH183 KB81 KB (44%)✓3rd
https://scanracer.com/_next/static/immutable/chunks/3gaicbgdmzc8y.js51 KB42 KB (83%)✓1st
https://scanracer.com/_next/static/immutable/chunks/1q-51rmfqb9tp.js71 KB27 KB (38%)✓1st
https://scanracer.com/_next/static/immutable/chunks/0ezxrxubsnq37.js10 KB—✓1st
https://scanracer.com/_next/static/immutable/chunks/0xiannuk_vusq.js4 KB—✓1st
https://scanracer.com/_next/static/immutable/chunks/0tpup5h0nlfnu.js42 KB—✓1st
https://scanracer.com/_next/static/immutable/chunks/turbopack-39oylohv1eq9k.js5 KB—✓1st
https://scanracer.com/_next/static/immutable/chunks/2corl6wyj4669.js4 KB—✓1st
https://scanracer.com/.well-known/vercel/security/static/challenge.v2.min.js0 KB—✓1st
https://scanracer.com/_next/static/immutable/chunks/0thizsrwllj-x.js11 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

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

Green Hosting

No green hosting detected

B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=0, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Third-Party Impact
15% third-party, 0 ms blocking
PASS
15% third-party, 0 ms blocking
Info::
Third-party code accounts for 15% of page weight (186.7 KiB of 1.2 MiB)
Info::
Third-party blocking time is low (0 ms)
85%
15%
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+
Image Optimization
7 images, 0 KB saveable
PASS
7 images, 0 KB saveable
Info::
All images are well-optimized
7 images 218 KB
0 oversized -0 KB
1 legacy format
0 missing dimensions CLS risk
A+
Font Loading
1 fonts (36 KB)
PASS
1 fonts (36 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

36 KB total

Render-blocking

0

of 1

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 1.2 s LCP 3.2 shttps://scanracer.com/_next/static/immutable/media/e8f2fbee2754df70-s.p.1gavkj72q9u43.woff2e8f2fbee2754df70-s.p.1g... https://scanracer.com/_next/static/immutable/media/e8f2fbee2754df70-s.p.1gavkj72q9u43.woff2 — 35.9 KiB — 37 ms — font-display: swap
e8f2fbee2754df70-s.p.1g... woff2 swap
Size 36 KB
Load time 37 ms
Start 2.5 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)
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+
Main HTML Cache-Control
Main HTML max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: public, max-age=0, must-revalidate
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
Page Weight Inventory
46 resources · 1.2 MB · 150 KB savings available
PASS
46 resources · 1.2 MB · 150 KB savings available
Warning::
Page weight 1.2 MB exceeds 1 MB target by 193 KB
Got: 1.2 MB Expected: ≤ 1 MB
Info::
~150 KB of savings available
Info::
6 third-party resources (15% of weight)
Info::
1 resources over 200KB
46 resources · 1.2 MiB · 6 third-party 192.7 KiB over 1MB target
Other 36% · 433.6 KiB
JavaScript 34% · 414.4 KiB
Image 18% · 219.9 KiB
Document 7% · 85.2 KiB
Font 3% · 35.9 KiB
CSS 2% · 27.6 KiB

~149.8 KiB of savings available

Remove unused JavaScript: 149.8 KiB
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+
JavaScript Blocking
No render-blocking JS or document.write usage detected
PASS
No render-blocking JS or document.write usage detected
Info::
No JavaScript blocking issues detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
Network Waterfall
46 requests over 3096ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 1.2 s LCP 3.2 shttps://scanracer.com// https://scanracer.com/ — 403 — 33.5 KiB — 61 ms — h2https://scanracer.com/.well-known/vercel/security/static/challenge.v2.min.js/.well-known/vercel/security/static... https://scanracer.com/.well-known/vercel/security/static/challenge.v2.min.js — 200 — 36 B — 98 ms — h2https://scanracer.com/favicon.ico/favicon.ico https://scanracer.com/favicon.ico — 403 — 33.3 KiB — 19 ms — h2https://scanracer.com/.well-known/vercel/security/static/challenge.v2.wasm/.well-known/vercel/security/static... https://scanracer.com/.well-known/vercel/security/static/challenge.v2.wasm — 200 — 430.3 KiB — 39 ms — h2https://scanracer.com/.well-known/vercel/security/request-challenge/.well-known/vercel/security/reques... https://scanracer.com/.well-known/vercel/security/request-challenge — 204 — 157 B — 20 ms — h2https://scanracer.com// https://scanracer.com/ — 308 — 1.1 KiB — 81 ms — h2https://scanracer.com/fr/fr https://scanracer.com/fr — 200 — 17.4 KiB — 693 ms — h2https://scanracer.com/_next/static/immutable/media/e8f2fbee2754df70-s.p.1gavkj72q9u43.woff2/_next/static/immutable/media/e8f2f... https://scanracer.com/_next/static/immutable/media/e8f2fbee2754df70-s.p.1gavkj72q9u43.woff2 — 200 — 35.9 KiB — 37 ms — h2https://scanracer.com/logo-white.svg?dpl=dpl_3Qs7jQaiWCPsJC91ucT9rd49oUT4/logo-white.svg?dpl=dpl_3Qs7jQaiWCP... https://scanracer.com/logo-white.svg?dpl=dpl_3Qs7jQaiWCPsJC91ucT9rd49oUT4 — 200 — 1017 B — 30 ms — h2https://scanracer.com/_next/static/immutable/chunks/1uxny7kbiz9f0.css/_next/static/immutable/chunks/1uxn... https://scanracer.com/_next/static/immutable/chunks/1uxny7kbiz9f0.css — 200 — 5.7 KiB — 66 ms — h2https://scanracer.com/_next/static/immutable/chunks/43ivaydj_gw2f.css/_next/static/immutable/chunks/43iv... https://scanracer.com/_next/static/immutable/chunks/43ivaydj_gw2f.css — 200 — 6.4 KiB — 63 ms — h2https://scanracer.com/_next/static/immutable/chunks/0xco3np3q7j46.css/_next/static/immutable/chunks/0xco... https://scanracer.com/_next/static/immutable/chunks/0xco3np3q7j46.css — 200 — 15.4 KiB — 27 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F8447cf2b-b179-4a31-8f2f-2d53ae20df52.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F8447cf2b-b179-4a31-8f2f-2d53ae20df52.webp&w=750&q=75 — 200 — 59.4 KiB — 154 ms — h2https://www.googletagmanager.com/gtag/js?id=G-D3PXBDB4BHwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-D3PXBDB4BH — 200 — 183.2 KiB — 195 ms — h2https://scanracer.com/_next/static/immutable/chunks/0xiannuk_vusq.js/_next/static/immutable/chunks/0xia... https://scanracer.com/_next/static/immutable/chunks/0xiannuk_vusq.js — 200 — 4.2 KiB — 45 ms — h2https://scanracer.com/_next/static/immutable/chunks/22z1pob1pifku.js/_next/static/immutable/chunks/22z1... https://scanracer.com/_next/static/immutable/chunks/22z1pob1pifku.js — 200 — 8.9 KiB — 45 ms — h2https://scanracer.com/_next/static/immutable/chunks/1q-51rmfqb9tp.js/_next/static/immutable/chunks/1q-5... https://scanracer.com/_next/static/immutable/chunks/1q-51rmfqb9tp.js — 200 — 71.4 KiB — 64 ms — h2https://scanracer.com/_next/static/immutable/chunks/0tpup5h0nlfnu.js/_next/static/immutable/chunks/0tpu... https://scanracer.com/_next/static/immutable/chunks/0tpup5h0nlfnu.js — 200 — 42.1 KiB — 197 ms — h2https://scanracer.com/_next/static/immutable/chunks/turbopack-39oylohv1eq9k.js/_next/static/immutable/chunks/turb... https://scanracer.com/_next/static/immutable/chunks/turbopack-39oylohv1eq9k.js — 200 — 4.6 KiB — 174 ms — h2https://scanracer.com/_next/static/immutable/chunks/2corl6wyj4669.js/_next/static/immutable/chunks/2cor... https://scanracer.com/_next/static/immutable/chunks/2corl6wyj4669.js — 200 — 3.9 KiB — 31 ms — h2https://scanracer.com/_next/static/immutable/chunks/0ezxrxubsnq37.js/_next/static/immutable/chunks/0ezx... https://scanracer.com/_next/static/immutable/chunks/0ezxrxubsnq37.js — 200 — 9.6 KiB — 161 ms — h2https://scanracer.com/_next/static/immutable/chunks/0thizsrwllj-x.js/_next/static/immutable/chunks/0thi... https://scanracer.com/_next/static/immutable/chunks/0thizsrwllj-x.js — 200 — 11.1 KiB — 35 ms — h2https://scanracer.com/_next/static/immutable/chunks/3gaicbgdmzc8y.js/_next/static/immutable/chunks/3gai... https://scanracer.com/_next/static/immutable/chunks/3gaicbgdmzc8y.js — 200 — 50.6 KiB — 61 ms — h2https://scanracer.com/_next/static/immutable/chunks/2z-cswbor8q8s.js/_next/static/immutable/chunks/2z-c... https://scanracer.com/_next/static/immutable/chunks/2z-cswbor8q8s.js — 200 — 15.5 KiB — 48 ms — h2https://scanracer.com/_next/static/immutable/chunks/0ezjsk5ti91la.js/_next/static/immutable/chunks/0ezj... https://scanracer.com/_next/static/immutable/chunks/0ezjsk5ti91la.js — 200 — 4.2 KiB — 48 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2Fba761682-540f-4d77-b946-22aaf1cbff83.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2Fba761682-540f-4d77-b946-22aaf1cbff83.webp&w=750&q=75 — -1 — 0 B — 0 ms — https://scanracer.com/_next/image?url=%2Fapp-screenshots%2FHome.png&w=640&q=75&dpl=dpl_3Qs7jQaiWCPsJC91ucT9rd49oUT4/_next/image?url=%2Fapp-screenshots... https://scanracer.com/_next/image?url=%2Fapp-screenshots%2FHome.png&w=640&q=75&dpl=dpl_3Qs7jQaiWCPsJC91ucT9rd49oUT4 — 200 — 25.1 KiB — 28 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F7d34e08b-9468-41f0-a59b-251d365912b2.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F7d34e08b-9468-41f0-a59b-251d365912b2.webp&w=750&q=75 — 200 — 67.8 KiB — 290 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F42cd8b0d-7c05-46e2-aa9c-b3b428871da3.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F42cd8b0d-7c05-46e2-aa9c-b3b428871da3.webp&w=750&q=75 — 200 — 37.9 KiB — 170 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F12601f1a-072d-4f86-9696-e8ec5a0c94e4.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F12601f1a-072d-4f86-9696-e8ec5a0c94e4.webp&w=750&q=75 — 200 — 26.6 KiB — 303 ms — h2
0 ms 1.0 s 2.0 s 3.0 s FCP 1.2 s LCP 3.2 shttps://scanracer.com// https://scanracer.com/ — 403 — 33.5 KiB — 61 ms — h2https://scanracer.com/.well-known/vercel/security/static/challenge.v2.min.js/.well-known/vercel/security/static... https://scanracer.com/.well-known/vercel/security/static/challenge.v2.min.js — 200 — 36 B — 98 ms — h2https://scanracer.com/favicon.ico/favicon.ico https://scanracer.com/favicon.ico — 403 — 33.3 KiB — 19 ms — h2https://scanracer.com/.well-known/vercel/security/static/challenge.v2.wasm/.well-known/vercel/security/static... https://scanracer.com/.well-known/vercel/security/static/challenge.v2.wasm — 200 — 430.3 KiB — 39 ms — h2https://scanracer.com/.well-known/vercel/security/request-challenge/.well-known/vercel/security/reques... https://scanracer.com/.well-known/vercel/security/request-challenge — 204 — 157 B — 20 ms — h2https://scanracer.com// https://scanracer.com/ — 308 — 1.1 KiB — 81 ms — h2https://scanracer.com/fr/fr https://scanracer.com/fr — 200 — 17.4 KiB — 693 ms — h2https://scanracer.com/_next/static/immutable/media/e8f2fbee2754df70-s.p.1gavkj72q9u43.woff2/_next/static/immutable/media/e8f2f... https://scanracer.com/_next/static/immutable/media/e8f2fbee2754df70-s.p.1gavkj72q9u43.woff2 — 200 — 35.9 KiB — 37 ms — h2https://scanracer.com/logo-white.svg?dpl=dpl_3Qs7jQaiWCPsJC91ucT9rd49oUT4/logo-white.svg?dpl=dpl_3Qs7jQaiWCP... https://scanracer.com/logo-white.svg?dpl=dpl_3Qs7jQaiWCPsJC91ucT9rd49oUT4 — 200 — 1017 B — 30 ms — h2https://scanracer.com/_next/static/immutable/chunks/1uxny7kbiz9f0.css/_next/static/immutable/chunks/1uxn... https://scanracer.com/_next/static/immutable/chunks/1uxny7kbiz9f0.css — 200 — 5.7 KiB — 66 ms — h2https://scanracer.com/_next/static/immutable/chunks/43ivaydj_gw2f.css/_next/static/immutable/chunks/43iv... https://scanracer.com/_next/static/immutable/chunks/43ivaydj_gw2f.css — 200 — 6.4 KiB — 63 ms — h2https://scanracer.com/_next/static/immutable/chunks/0xco3np3q7j46.css/_next/static/immutable/chunks/0xco... https://scanracer.com/_next/static/immutable/chunks/0xco3np3q7j46.css — 200 — 15.4 KiB — 27 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F8447cf2b-b179-4a31-8f2f-2d53ae20df52.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F8447cf2b-b179-4a31-8f2f-2d53ae20df52.webp&w=750&q=75 — 200 — 59.4 KiB — 154 ms — h2https://www.googletagmanager.com/gtag/js?id=G-D3PXBDB4BHwww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-D3PXBDB4BH — 200 — 183.2 KiB — 195 ms — h2https://scanracer.com/_next/static/immutable/chunks/0xiannuk_vusq.js/_next/static/immutable/chunks/0xia... https://scanracer.com/_next/static/immutable/chunks/0xiannuk_vusq.js — 200 — 4.2 KiB — 45 ms — h2https://scanracer.com/_next/static/immutable/chunks/22z1pob1pifku.js/_next/static/immutable/chunks/22z1... https://scanracer.com/_next/static/immutable/chunks/22z1pob1pifku.js — 200 — 8.9 KiB — 45 ms — h2https://scanracer.com/_next/static/immutable/chunks/1q-51rmfqb9tp.js/_next/static/immutable/chunks/1q-5... https://scanracer.com/_next/static/immutable/chunks/1q-51rmfqb9tp.js — 200 — 71.4 KiB — 64 ms — h2https://scanracer.com/_next/static/immutable/chunks/0tpup5h0nlfnu.js/_next/static/immutable/chunks/0tpu... https://scanracer.com/_next/static/immutable/chunks/0tpup5h0nlfnu.js — 200 — 42.1 KiB — 197 ms — h2https://scanracer.com/_next/static/immutable/chunks/turbopack-39oylohv1eq9k.js/_next/static/immutable/chunks/turb... https://scanracer.com/_next/static/immutable/chunks/turbopack-39oylohv1eq9k.js — 200 — 4.6 KiB — 174 ms — h2https://scanracer.com/_next/static/immutable/chunks/2corl6wyj4669.js/_next/static/immutable/chunks/2cor... https://scanracer.com/_next/static/immutable/chunks/2corl6wyj4669.js — 200 — 3.9 KiB — 31 ms — h2https://scanracer.com/_next/static/immutable/chunks/0ezxrxubsnq37.js/_next/static/immutable/chunks/0ezx... https://scanracer.com/_next/static/immutable/chunks/0ezxrxubsnq37.js — 200 — 9.6 KiB — 161 ms — h2https://scanracer.com/_next/static/immutable/chunks/0thizsrwllj-x.js/_next/static/immutable/chunks/0thi... https://scanracer.com/_next/static/immutable/chunks/0thizsrwllj-x.js — 200 — 11.1 KiB — 35 ms — h2https://scanracer.com/_next/static/immutable/chunks/3gaicbgdmzc8y.js/_next/static/immutable/chunks/3gai... https://scanracer.com/_next/static/immutable/chunks/3gaicbgdmzc8y.js — 200 — 50.6 KiB — 61 ms — h2https://scanracer.com/_next/static/immutable/chunks/2z-cswbor8q8s.js/_next/static/immutable/chunks/2z-c... https://scanracer.com/_next/static/immutable/chunks/2z-cswbor8q8s.js — 200 — 15.5 KiB — 48 ms — h2https://scanracer.com/_next/static/immutable/chunks/0ezjsk5ti91la.js/_next/static/immutable/chunks/0ezj... https://scanracer.com/_next/static/immutable/chunks/0ezjsk5ti91la.js — 200 — 4.2 KiB — 48 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2Fba761682-540f-4d77-b946-22aaf1cbff83.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2Fba761682-540f-4d77-b946-22aaf1cbff83.webp&w=750&q=75 — -1 — 0 B — 0 ms — https://scanracer.com/_next/image?url=%2Fapp-screenshots%2FHome.png&w=640&q=75&dpl=dpl_3Qs7jQaiWCPsJC91ucT9rd49oUT4/_next/image?url=%2Fapp-screenshots... https://scanracer.com/_next/image?url=%2Fapp-screenshots%2FHome.png&w=640&q=75&dpl=dpl_3Qs7jQaiWCPsJC91ucT9rd49oUT4 — 200 — 25.1 KiB — 28 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F7d34e08b-9468-41f0-a59b-251d365912b2.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F7d34e08b-9468-41f0-a59b-251d365912b2.webp&w=750&q=75 — 200 — 67.8 KiB — 290 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F42cd8b0d-7c05-46e2-aa9c-b3b428871da3.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F42cd8b0d-7c05-46e2-aa9c-b3b428871da3.webp&w=750&q=75 — 200 — 37.9 KiB — 170 ms — h2https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F12601f1a-072d-4f86-9696-e8ec5a0c94e4.webp&w=750&q=75/_next/image?url=https%3A%2F%2Fxzph... https://scanracer.com/_next/image?url=https%3A%2F%2Fxzphehgjvigxkaflovlq.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fscanracer%2Fmedium%2F12601f1a-072d-4f86-9696-e8ec5a0c94e4.webp&w=750&q=75 — 200 — 26.6 KiB — 303 ms — h2https://scanracer.com/icon.svg/icon.svg https://scanracer.com/icon.svg — 200 — 2.1 KiB — 24 ms — h2https://analytics.tiktok.com/i18n/pixel/events.js?sdkid=D8KTDA3C77UAAGTBRDOG&lib=ttqanalytics.tiktok.com/i18n/pixel/eve... https://analytics.tiktok.com/i18n/pixel/events.js?sdkid=D8KTDA3C77UAAGTBRDOG&lib=ttq — 200 — 3.5 KiB — 208 ms — h2https://scanracer.com/icon.svg/icon.svg https://scanracer.com/icon.svg — 200 — 69 B — 30 ms — 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h2https://scanracer.com/_vercel/insights/script.js/_vercel/insights/script.js https://scanracer.com/_vercel/insights/script.js — 200 — 1.5 KiB — 29 ms — h2https://play.google.com/store/apps/details?id=com.KD367.scanracerplay.google.com/store/apps/details?... https://play.google.com/store/apps/details?id=com.KD367.scanracer — -1 — 0 B — 0 ms — https://scanracer.com/_vercel/insights/view/_vercel/insights/view https://scanracer.com/_vercel/insights/view — 200 — 216 B — 50 ms — h2https://play.google.com/store/apps/details?id=com.KD367.scanracerplay.google.com/store/apps/details?... https://play.google.com/store/apps/details?id=com.KD367.scanracer — -1 — 0 B — 0 ms — https://scanracer.com/fr?_rsc=tXyZJ52UQVBCVsD3/fr?_rsc=tXyZJ52UQVBCVsD3 https://scanracer.com/fr?_rsc=tXyZJ52UQVBCVsD3 — -1 — 0 B — 0 ms — https://scanracer.com/fr/login?_rsc=tXyZJ52UQVBCVsD3/fr/login?_rsc=tXyZJ52UQVBCVsD3 https://scanracer.com/fr/login?_rsc=tXyZJ52UQVBCVsD3 — -1 — 0 B — 0 ms — https://analytics.tiktok.com/i18n/pixel/static/main.MTgxMDg1OGQ1OQ.jsanalytics.tiktok.com/i18n/pixel/sta... https://analytics.tiktok.com/i18n/pixel/static/main.MTgxMDg1OGQ1OQ.js — -1 — 0 B — 0 ms — https://scanracer.com/fr/identifier-voiture-photo?_rsc=tXyZJ52UQVBCVsD3/fr/identifier-voiture-photo?_rsc=t... https://scanracer.com/fr/identifier-voiture-photo?_rsc=tXyZJ52UQVBCVsD3 — -1 — 0 B — 0 ms —
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
12% of JavaScript execution is third-party
First-party Third-party 262ms · 183KB · $3/mo
Google Tag Manager
Tag Manager
Costly
Execution 262ms
Transfer 183 KB
Unused 44%
Monthly Cost $3/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 262ms and costs ~$3/month

Google Tag Manager takes 262ms 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

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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