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Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
88
GRADE
B
FIX
3
REVIEW
3
PASS
16
INFO
4

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

Mobile Desktop
72
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
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.
50
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.

950 ms

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

2.73 s

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

1.25 s

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.

950 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

3.48 s

Page Load Progression

487 ms
973 ms
1.5 s
1.9 s
2.4 s
2.9 s
3.4 s
3.9 s
Checks
26
16 PASS 3 REVIEW 3 FIX
D
Third-Party Impact
Action
84% third-party, 0 ms blocking
FIX
84% third-party, 0 ms blocking
Warning::
Third-party code accounts for 84% of page weight (460.4 KiB of 546.7 KiB)
Info::
Third-party blocking time is low (0 ms)
16%
84%
First-party Third-party
D
JS Execution Cost
Action
2076ms total JS execution
FIX
2076ms total JS execution
Warning::
https://gitlab.com/cdn-cgi/challenge-platform/h/g/...: 1756ms CPU time
Info::
Unattributable: 142ms CPU time
Info::
https://gitlab.com/users/sign_in: 108ms CPU time
Info::
https://challenges.cloudflare.com/turnstile/v0/g/f...: 71ms CPU time
Info::
Third-party scripts: 212ms (10% of total)

Main Thread Breakdown

Script Evaluation 85% Other 10%
ScriptTotalScriptingParse/CompileParty
https://gitlab.com/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9f8fb757386a437b1756ms1717ms23ms1st
Unattributable142ms10ms0ms3rd
https://gitlab.com/users/sign_in108ms10ms2ms1st
https://challenges.cloudflare.com/turnstile/v0/g/fe6331af5207/api.js?onload=kwkA1&render=explicit71ms40ms8ms3rd
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
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
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
A+
Page Weight Budget
547 KB transferred, 19 requests
PASS
547 KB transferred, 19 requests
Info::
Page weighs 953 KB (547 KB transferred)
Info::
19 HTTP requests
Info::
Estimated 0.11 g CO2 per page load
547 KB / 2.4 MB budget
547 KB transferred
19 requests
0.11 g CO2 per page load
Other 371.9 KiB 68%
HTML 85.0 KiB 16%
JavaScript 81.7 KiB 15%
Other 3.4 KiB 1%
Images 3.0 KiB 1%
Other 1.7 KiB 0%
0 2.4 MB 4.9 MB
Under budget
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
3 images, 0 KB saveable
PASS
3 images, 0 KB saveable
Info::
All images are well-optimized
3 images 3 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
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+
JS Bundles
7 scripts, 0 KB unused
PASS
7 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://gitlab.com/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9f8fb757386a437b62 KB—✓1st
blob:https://gitlab.com/ff1de6f4-abba-4570-99e0-e156614e31010 KB—✓3rd
https://challenges.cloudflare.com/turnstile/v0/g/fe6331af5207/api.js?onload=kwkA1&render=explicit20 KB—✓3rd
blob:https://gitlab.com/d6c4cecc-c655-49ee-adc7-59a8e8ee6916-0 KB—✓3rd
blob:https://challenges.cloudflare.com/af2a80c7-a5de-4ed7-8a0a-b94baee8f9ab0 KB—✓3rd
blob:https://challenges.cloudflare.com/7225752b-673b-4a59-ae42-3e54fa036017-0 KB—✓3rd
blob:https://challenges.cloudflare.com/7225752b-673b-4a59-ae42-3e54fa036017-0 KB—✓3rd
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-Timing Observability
1 Server-Timing entries advertised
PASS
1 Server-Timing entries advertised
Info::
Server-Timing header advertises 1 timing entries
A
Page Weight Inventory
19 resources · 547 KB · 0 KB savings available
PASS
19 resources · 547 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 547 KB
Warning::
11 third-party resources (84% of weight)
Info::
1 resources over 200KB
19 resources · 546.7 KiB · 11 third-party Within 1MB page-weight target
Other 68% · 373.7 KiB
Document 16% · 88.3 KiB
JavaScript 15% · 81.7 KiB
Image 1% · 3.0 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
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
1 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
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

Network Waterfall
19 requests over 2934ms
INFO
0 ms 1.0 s 2.0 s 3.0 s FCP 950 ms LCP 2.7 shttps://gitlab.com/users/sign_in/users/sign_in https://gitlab.com/users/sign_in — 307 — 73 B — 25 ms — http/1.1https://gitlab.com/users/sign_in/users/sign_in https://gitlab.com/users/sign_in — 403 — 4.1 KiB — 8 ms — h2https://gitlab.com/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9f8fb757386a437b/cdn-cgi/challenge-platform/h/g/orc... https://gitlab.com/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=9f8fb757386a437b — 200 — 61.8 KiB — 20 ms — h2blob:https://gitlab.com/ff1de6f4-abba-4570-99e0-e156614e3101gitlab.com/ff1de6f4-abba-4570-99e0-... blob:https://gitlab.com/ff1de6f4-abba-4570-99e0-e156614e3101 — -1 — 0 B — 0 ms — https://challenges.cloudflare.com/turnstile/v0/g/fe6331af5207/api.js?onload=kwkA1&render=explicitchallenges.cloudflare.com/turnstile... https://challenges.cloudflare.com/turnstile/v0/g/fe6331af5207/api.js?onload=kwkA1&render=explicit — 200 — 20.0 KiB — 23 ms — h3https://gitlab.com/favicon.ico/favicon.ico https://gitlab.com/favicon.ico — 301 — 1.7 KiB — 71 ms — h2https://gitlab.com/assets/favicon-72a2cad5025aa931d6ea56c3201d1f18e68a8cd39788c7c80d5b2b82aa5143ef.png/assets/favicon-72a2cad5025aa931d6e... https://gitlab.com/assets/favicon-72a2cad5025aa931d6ea56c3201d1f18e68a8cd39788c7c80d5b2b82aa5143ef.png — 200 — 1.4 KiB — 23 ms — h2https://gitlab.com/favicon.ico/favicon.ico https://gitlab.com/favicon.ico — 301 — 1.6 KiB — 86 ms — h2https://gitlab.com/cdn-cgi/challenge-platform/h/g/flow/ov1/1018565600:1778318523:zpbmyHblv9uT1sqcsaiQfmp8YeHdHl5_PXHuA_TuLGQ/9f8fb757386a437b/ghJcq.4fcYv2W2E6OSUmJ6NjDVuxdXVgp2NLvVniMKo-1778319348-1.2.1.1-C.UZAij4RUfJ34hdM.MLPACvLz2GeSMn_x2w_DnFkhFKs0W1UGK91BKv._oy5wYB/cdn-cgi/challenge-platform/h/g/flo... https://gitlab.com/cdn-cgi/challenge-platform/h/g/flow/ov1/1018565600:1778318523:zpbmyHblv9uT1sqcsaiQfmp8YeHdHl5_PXHuA_TuLGQ/9f8fb757386a437b/ghJcq.4fcYv2W2E6OSUmJ6NjDVuxdXVgp2NLvVniMKo-1778319348-1.2.1.1-C.UZAij4RUfJ34hdM.MLPACvLz2GeSMn_x2w_DnFkhFKs0W1UGK91BKv._oy5wYB — 200 — 15.7 KiB — 23 ms — h2blob:https://gitlab.com/d6c4cecc-c655-49ee-adc7-59a8e8ee6916gitlab.com/d6c4cecc-c655-49ee-adc7-... blob:https://gitlab.com/d6c4cecc-c655-49ee-adc7-59a8e8ee6916 — 200 — -1 B — 45 ms — blobhttps://gitlab.com/assets/favicon-72a2cad5025aa931d6ea56c3201d1f18e68a8cd39788c7c80d5b2b82aa5143ef.png/assets/favicon-72a2cad5025aa931d6e... https://gitlab.com/assets/favicon-72a2cad5025aa931d6ea56c3201d1f18e68a8cd39788c7c80d5b2b82aa5143ef.png — 200 — 0 B — 4 ms — h2https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/turnstile/f/ov2/av0/rch/zm973/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/new/normal?lang=autochallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/turnstile/f/ov2/av0/rch/zm973/0x4AAAAAAADnPIDROrmt1Wwj/light/fbE/new/normal?lang=auto — 200 — 80.9 KiB — 31 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/cmg/1challenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/cmg/1 — 200 — 208 B — 7 ms — h3blob:https://challenges.cloudflare.com/af2a80c7-a5de-4ed7-8a0a-b94baee8f9abchallenges.cloudflare.com/af2a80c7-... blob:https://challenges.cloudflare.com/af2a80c7-a5de-4ed7-8a0a-b94baee8f9ab — -1 — 0 B — 0 ms — https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/flow/ov1/1422299800:1778318524:zwZoUiFtTJwV90CYRenzUlgNaNdFcIMuDkiizXsi69c/9f8fb759695e3d71/KH8MZtrfjsP3jgoWxZe4dMz7VFzrjLdN3qUg8rsJLfc-1778319348-1.2.1.1-M446pzkO6UvJm8Ltb9on0zVPlfF9VtfGA_poNsSSnDJJWZ3Q6jFkNAGtHQEE_iB6challenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/flow/ov1/1422299800:1778318524:zwZoUiFtTJwV90CYRenzUlgNaNdFcIMuDkiizXsi69c/9f8fb759695e3d71/KH8MZtrfjsP3jgoWxZe4dMz7VFzrjLdN3qUg8rsJLfc-1778319348-1.2.1.1-M446pzkO6UvJm8Ltb9on0zVPlfF9VtfGA_poNsSSnDJJWZ3Q6jFkNAGtHQEE_iB6 — 200 — 356.3 KiB — 96 ms — h3blob:https://challenges.cloudflare.com/7225752b-673b-4a59-ae42-3e54fa036017challenges.cloudflare.com/7225752b-... blob:https://challenges.cloudflare.com/7225752b-673b-4a59-ae42-3e54fa036017 — 200 — -1 B — 35 ms — blobhttps://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/d/9f8fb759695e3d71/1778319349034/U9EElh2Ykk_i4Whchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/d/9f8fb759695e3d71/1778319349034/U9EElh2Ykk_i4Wh — 200 — 1.4 KiB — 6 ms — h3https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/pat/9f8fb759695e3d71/1778319349035/463b259a3e2ec0df279f89950ac9dcc4d28c384b2f8299a07c9d586d58392564/qKC-vw8hMhccyYVchallenges.cloudflare.com/cdn-cgi/c... https://challenges.cloudflare.com/cdn-cgi/challenge-platform/h/g/pat/9f8fb759695e3d71/1778319349035/463b259a3e2ec0df279f89950ac9dcc4d28c384b2f8299a07c9d586d58392564/qKC-vw8hMhccyYV — 401 — 1.7 KiB — 7 ms — h3blob:https://challenges.cloudflare.com/7225752b-673b-4a59-ae42-3e54fa036017challenges.cloudflare.com/7225752b-... blob:https://challenges.cloudflare.com/7225752b-673b-4a59-ae42-3e54fa036017 — 200 — -1 B — 20 ms — blob
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
10% of JavaScript execution is third-party
First-party Third-party 212ms · 20KB · $3/mo
Unattributable
Other
Optional
Execution 142ms
Transfer 0 KB
Monthly Cost $2/mo
challenges.cloudflare.com
Other
Optional
Execution 71ms
Transfer 20 KB
Monthly Cost $1/mo

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 (2026-04-10 — 2026-05-07)

LCP (p75)

2092 ms

86% good

INP (p75)

54 ms

97% good

CLS (p75)

0.060

87% good

FCP (p75)

1984 ms

TTFB (p75)

1720 ms

This origin passes Core Web Vitals assessment
Image Optimization
1 images, 1 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

1 KB

1 missing dimensions
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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