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Performance

· 24 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
98
GRADE
A+
FIX
0
REVIEW
1
PASS
22
INFO
1

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

Mobile Desktop
91
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.

925 ms

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

1.56 s

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

59 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.

9.52 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.

1.56 s

Page Load Progression

2.3 s
4.5 s
6.8 s
9.1 s
11.4 s
13.6 s
15.9 s
18.2 s
Checks
24
22 PASS 1 REVIEW
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Long max-age on the main HTML document means users may see outdated auth state, SPA shells, or A/B variants until the cache expires.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
30 KB transferred, 9 requests
PASS
30 KB transferred, 9 requests
Info::
Page weighs 92 KB (30 KB transferred)
Info::
9 HTTP requests
Info::
Estimated 0.01 g CO2 per page load
30 KB / 2.4 MB budget
30 KB transferred
9 requests
0.01 g CO2 per page load
CSS 11.6 KiB 39%
JavaScript 10.7 KiB 36%
HTML 5.0 KiB 17%
Other 1.5 KiB 5%
Other 708 B 2%
Other 604 B 2%
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+
JS Execution Cost
476ms total JS execution
PASS
476ms total JS execution
Info::
https://xpenv.com/cdn-cgi/challenge-platform/scrip...: 225ms CPU time
Info::
Unattributable: 140ms CPU time
Info::
https://xpenv.com/: 111ms CPU time

Main Thread Breakdown

Script Evaluation 54% Other 32% Style & Layout 8% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://xpenv.com/cdn-cgi/challenge-platform/scripts/jsd/main.js225ms212ms2ms1st
Unattributable140ms4ms0ms1st
https://xpenv.com/111ms45ms3ms1st
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.js0 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?10 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 · 30 KB · 0 KB savings available
PASS
9 resources · 30 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 30 KB
Info::
1 third-party resources (0% of weight)
9 resources · 30.1 KiB · 1 third-party Within 1MB page-weight target
CSS 39% · 11.6 KiB
JavaScript 36% · 10.7 KiB
Document 17% · 5.0 KiB
Other 9% · 2.8 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
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

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 340ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 925 ms LCP 1.6 shttps://xpenv.com// https://xpenv.com/ — 200 — 5.0 KiB — 68 ms — h2https://xpenv.com/cdn-cgi/speculation/cdn-cgi/speculation https://xpenv.com/cdn-cgi/speculation — 200 — 468 B — 22 ms — h2https://xpenv.com/assets/index-CW5Uzupm.js/assets/index-CW5Uzupm.js https://xpenv.com/assets/index-CW5Uzupm.js — 404 — 328 B — 113 ms — h2https://xpenv.com/assets/index-DyJOIMUX.css/assets/index-DyJOIMUX.css https://xpenv.com/assets/index-DyJOIMUX.css — 200 — 11.6 KiB — 82 ms — h2https://xpenv.com/manifest.json/manifest.json https://xpenv.com/manifest.json — 200 — 1.5 KiB — 95 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 — 240 B — 24 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 — 10.4 KiB — 35 ms — h3https://xpenv.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/1eec422858ff/0.2827523393127894:1779736062:AOCxsMAC8RYJIYBukqu9oF1wwPoEHooNvTozOzwuOMI/a016f2149bce5858/cdn-cgi/challenge-platform/h/b/jsd... https://xpenv.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/1eec422858ff/0.2827523393127894:1779736062:AOCxsMAC8RYJIYBukqu9oF1wwPoEHooNvTozOzwuOMI/a016f2149bce5858 — 200 — 604 B — 26 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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