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Performance

· 24 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
95
GRADE
A
FIX
1
REVIEW
2
PASS
20
INFO
1

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

Mobile Desktop
68
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
94
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.

3.47 s

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

3.92 s

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

474 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.041

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

3.47 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.

4.58 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
24
20 PASS 2 REVIEW 1 FIX
D
HTTP Caching
Action
no-store (uncacheable)
FIX
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-store
Info::
Last-Modified header present
Cache-Control

no-store

DirectiveValueMeaning
no-store—Never cache this response
C
JS Execution Cost
Action
1655ms total JS execution
REVIEW
1655ms total JS execution
Warning::
https://xpenv.com/assets/index-BSy0Hrty.js: 704ms CPU time
Warning::
Unattributable: 408ms CPU time
Warning::
https://xpenv.com/cdn-cgi/challenge-platform/scrip...: 302ms CPU time
Info::
https://xpenv.com/: 241ms CPU time

Main Thread Breakdown

Script Evaluation 64% Other 25% Style & Layout 7%
ScriptTotalScriptingParse/CompileParty
https://xpenv.com/assets/index-BSy0Hrty.js704ms677ms9ms1st
Unattributable408ms9ms0ms1st
https://xpenv.com/cdn-cgi/challenge-platform/scripts/jsd/main.js302ms289ms4ms1st
https://xpenv.com/241ms91ms4ms1st
C
JS Bundles
Action
3 scripts, 289 KB unused
REVIEW
3 scripts, 289 KB unused
Warning::
https://xpenv.com/assets/index-BSy0Hrty.js: 289 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 289 KB
289 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://xpenv.com/assets/index-BSy0Hrty.js454 KB289 KB (64%)✓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

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

A+
Page Weight Budget
484 KB transferred, 10 requests
PASS
484 KB transferred, 10 requests
Info::
Page weighs 1.6 MB (484 KB transferred)
Info::
10 HTTP requests
Info::
Estimated 0.10 g CO2 per page load
484 KB / 2.4 MB budget
484 KB transferred
10 requests
0.10 g CO2 per page load
JavaScript 464.3 KiB 96%
CSS 11.5 KiB 2%
HTML 4.7 KiB 1%
Other 1.6 KiB 0%
Other 795 B 0%
Other 779 B 0%
Other 606 B 0%
0 2.4 MB 4.9 MB
Under budget
A+
Third-Party Impact
0% third-party, 0 ms blocking
PASS
0% third-party, 0 ms blocking
Info::
Third-party code accounts for 0% of page weight (779 B of 484.2 KiB)
Info::
Third-party blocking time is low (0 ms)
100%
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
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+
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+
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
PASS
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: no-store
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
10 resources · 484 KB · 289 KB savings available
PASS
10 resources · 484 KB · 289 KB savings available
Info::
Within 1MB page-weight target
Got: 484 KB
Info::
~289 KB of savings available
Info::
2 third-party resources (0% of weight)
Info::
1 resources over 200KB
10 resources · 484.2 KiB · 2 third-party Within 1MB page-weight target
JavaScript 96% · 464.3 KiB
CSS 2% · 11.5 KiB
Document 1% · 4.7 KiB
Other 1% · 3.7 KiB

~289.1 KiB of savings available

Remove unused JavaScript: 289.1 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
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
10 requests over 635ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 3.5 s LCP 3.9 shttps://xpenv.com// https://xpenv.com/ — 200 — 4.7 KiB — 33 ms — h3https://xpenv.com/cdn-cgi/speculation/cdn-cgi/speculation https://xpenv.com/cdn-cgi/speculation — 200 — 591 B — 7 ms — h3https://xpenv.com/assets/index-BSy0Hrty.js/assets/index-BSy0Hrty.js https://xpenv.com/assets/index-BSy0Hrty.js — 200 — 454.2 KiB — 41 ms — h3https://xpenv.com/assets/index-Crwodijn.css/assets/index-Crwodijn.css https://xpenv.com/assets/index-Crwodijn.css — 200 — 11.5 KiB — 18 ms — h3https://xpenv.com/manifest.json/manifest.json https://xpenv.com/manifest.json — 200 — 1.6 KiB — 575 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 — 204 B — 63 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 — 10.1 KiB — 10 ms — h3https://api.coingecko.com/api/v3/simple/price?ids=stellar&vs_currencies=usdapi.coingecko.com/api/v3/simple/pri... https://api.coingecko.com/api/v3/simple/price?ids=stellar&vs_currencies=usd — 200 — 779 B — 209 ms — h3https://xpenv.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/1eec422858ff/0.17501131559053684:1779667642:LqB4163RDXkiM9vQeCJ7w996RuOAuZGGhF1wVK5pcKw/a010974f7aa8626a/cdn-cgi/challenge-platform/h/b/jsd... https://xpenv.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/1eec422858ff/0.17501131559053684:1779667642:LqB4163RDXkiM9vQeCJ7w996RuOAuZGGhF1wVK5pcKw/a010974f7aa8626a — 200 — 606 B — 17 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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