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Performance

· 24 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
97
GRADE
A+
FIX
0
REVIEW
2
PASS
21
INFO
1

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

Mobile Desktop
88
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.
73
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.

1.21 s

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

1.80 s

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

126 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.

26.20 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.

1.80 s

Page Load Progression

2.3 s
4.6 s
6.9 s
9.2 s
11.5 s
13.8 s
16.0 s
18.3 s
Checks
24
21 PASS 2 REVIEW
B
JS Execution Cost
664ms total JS execution
REVIEW
664ms total JS execution
Warning::
https://xpenv.com/cdn-cgi/challenge-platform/scrip...: 376ms CPU time
Info::
Unattributable: 179ms CPU time
Info::
https://xpenv.com/: 108ms CPU time

Main Thread Breakdown

Script Evaluation 63% Other 28% Style & Layout 5%
ScriptTotalScriptingParse/CompileParty
https://xpenv.com/cdn-cgi/challenge-platform/scripts/jsd/main.js376ms363ms3ms1st
Unattributable179ms6ms0ms1st
https://xpenv.com/108ms53ms3ms1st
C
Main HTML Cache-Control
Action
Main HTML max-age=86400 (~1440min) is aggressive
REVIEW
Main HTML max-age=86400 (~1440min) is aggressive
Warning::
Main HTML cached for 1440 minutes -- risks stale auth / SPA state
Long max-age on the main HTML document means users may see outdated auth state, SPA shells, or A/B variants until the cache expires. Consider Cache-Control: no-cache (or max-age=300) for HTML and let your hashed assets (JS/CSS/images) carry the long cache instead.
Got: max-age=86400
A+
Page Weight Budget
19 KB transferred, 9 requests
PASS
19 KB transferred, 9 requests
Info::
Page weighs 35 KB (19 KB transferred)
Info::
9 HTTP requests
Info::
Estimated 0.00 g CO2 per page load
19 KB / 2.4 MB budget
19 KB transferred
9 requests
0.00 g CO2 per page load
JavaScript 11.2 KiB 59%
HTML 5.0 KiB 26%
Other 1.5 KiB 8%
Other 799 B 4%
Other 606 B 3%
CSS 0 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
No third-party resources
PASS
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-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
No images on this page
PASS
No images on this page
Info::
No images on this page
0 images 0 KB
0 oversized -0 KB
0 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
3 scripts, 0 KB unused
PASS
3 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://xpenv.com/assets/index-CW5Uzupm.js1 KB—✓1st
https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a117781722764470 KB—✓3rd
https://xpenv.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/1eec422858ff/main.js?11 KB—✓1st
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+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
Compression Algorithm
Main response uses brotli
PASS
Main response uses brotli
Info::
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
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
3 Server-Timing entries advertised
PASS
3 Server-Timing entries advertised
Info::
Server-Timing header advertises 3 timing entries
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: Accept-Encoding
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+
Page Weight Inventory
9 resources · 19 KB · 0 KB savings available
PASS
9 resources · 19 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 19 KB
Info::
1 third-party resources (0% of weight)
9 resources · 19.1 KiB · 1 third-party Within 1MB page-weight target
JavaScript 59% · 11.2 KiB
Document 26% · 5.0 KiB
Other 15% · 2.9 KiB
CSS 0% · 0 B
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
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=86400 (1 day)
PASS
max-age=86400 (1 day)
Info::
Cache-Control header is set
Got: max-age=86400
Info::
Effective TTL: 1 day (max-age=86400)
Info::
Last-Modified header present
Cache-Control

max-age=86400

DirectiveValueMeaning
max-age86400Cache for 1 day
Effective TTL: 86400 seconds
Network Waterfall
9 requests over 455ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 1.2 s LCP 1.8 shttps://xpenv.com// https://xpenv.com/ — 200 — 5.0 KiB — 30 ms — h3https://xpenv.com/cdn-cgi/speculation/cdn-cgi/speculation https://xpenv.com/cdn-cgi/speculation — 200 — 594 B — 6 ms — h3https://xpenv.com/assets/index-DyJOIMUX.css/assets/index-DyJOIMUX.css https://xpenv.com/assets/index-DyJOIMUX.css — -1 — 0 B — 271 ms — https://xpenv.com/assets/index-CW5Uzupm.js/assets/index-CW5Uzupm.js https://xpenv.com/assets/index-CW5Uzupm.js — 404 — 695 B — 266 ms — h3https://xpenv.com/manifest.json/manifest.json https://xpenv.com/manifest.json — 200 — 1.5 KiB — 61 ms — h3https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a11778172276447static.cloudflareinsights.com/beaco... https://static.cloudflareinsights.com/beacon.min.js/v833ccba57c9e4d2798f2e76cebdd09a11778172276447 — -1 — 0 B — 0 ms — https://xpenv.com/cdn-cgi/challenge-platform/scripts/jsd/main.js/cdn-cgi/challenge-platform/scripts... https://xpenv.com/cdn-cgi/challenge-platform/scripts/jsd/main.js — 302 — 205 B — 11 ms — h3https://xpenv.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/1eec422858ff/main.js?/cdn-cgi/challenge-platform/h/b/scr... https://xpenv.com/cdn-cgi/challenge-platform/h/b/scripts/jsd/1eec422858ff/main.js? — 200 — 10.5 KiB — 6 ms — h3https://xpenv.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/1eec422858ff/0.36390852067500157:1779682252:AJIBbFSu0_1XGaKuEZTGHI6CCX55Z-2zc3pqdl__rkI/a011f8e9daa1347c/cdn-cgi/challenge-platform/h/b/jsd... https://xpenv.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/1eec422858ff/0.36390852067500157:1779682252:AJIBbFSu0_1XGaKuEZTGHI6CCX55Z-2zc3pqdl__rkI/a011f8e9daa1347c — 200 — 606 B — 9 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
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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