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Performance

· 24 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
92
GRADE
A
FIX
0
REVIEW
4
PASS
19
INFO
1

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

Mobile Desktop
73
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.
73
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
66
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.

3.06 s

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

4.40 s

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

287 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.

3.27 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.

4.40 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
19 PASS 4 REVIEW
C
JS Execution Cost
Action
1024ms total JS execution
REVIEW
1024ms total JS execution
Warning::
https://xpenv.com/assets/index-CgOUFYGR.js: 401ms CPU time
Info::
Unattributable: 250ms CPU time
Info::
https://xpenv.com/cdn-cgi/challenge-platform/scrip...: 220ms CPU time
Info::
https://xpenv.com/: 153ms CPU time

Main Thread Breakdown

Script Evaluation 62% Other 25% Style & Layout 9%
ScriptTotalScriptingParse/CompileParty
https://xpenv.com/assets/index-CgOUFYGR.js401ms388ms5ms1st
Unattributable250ms6ms0ms1st
https://xpenv.com/cdn-cgi/challenge-platform/scripts/jsd/main.js220ms197ms2ms1st
https://xpenv.com/153ms50ms3ms1st
C
JS Bundles
Action
4 scripts, 265 KB unused
REVIEW
4 scripts, 265 KB unused
Warning::
https://xpenv.com/assets/index-CgOUFYGR.js: 265 KB unused (64%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 265 KB
265 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://xpenv.com/assets/index-CgOUFYGR.js414 KB265 KB (64%)✓1st
https://xpenv.com/path-guard.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?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

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
Main HTML Cache-Control
Action
Main HTML max-age=29030400 (~483840min) is aggressive
REVIEW
Main HTML max-age=29030400 (~483840min) is aggressive
Warning::
Main HTML cached for 483840 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: public, max-age=29030400, immutable
A+
Page Weight Budget
450 KB transferred, 11 requests
PASS
450 KB transferred, 11 requests
Info::
Page weighs 1.5 MB (450 KB transferred)
Info::
11 HTTP requests
Info::
Estimated 0.09 g CO2 per page load
450 KB / 2.4 MB budget
450 KB transferred
11 requests
0.09 g CO2 per page load
JavaScript 425.1 KiB 95%
CSS 14.4 KiB 3%
HTML 6.6 KiB 1%
Other 1.8 KiB 0%
Other 780 B 0%
Other 596 B 0%
Other 550 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 (780 B of 449.8 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+
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
4 Server-Timing entries advertised
PASS
4 Server-Timing entries advertised
Info::
Server-Timing header advertises 4 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::
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
11 resources · 450 KB · 265 KB savings available
PASS
11 resources · 450 KB · 265 KB savings available
Info::
Within 1MB page-weight target
Got: 450 KB
Info::
~265 KB of savings available
Info::
2 third-party resources (0% of weight)
Info::
1 resources over 200KB
11 resources · 449.8 KiB · 2 third-party Within 1MB page-weight target
JavaScript 95% · 425.1 KiB
CSS 3% · 14.4 KiB
Document 1% · 6.6 KiB
Other 1% · 3.7 KiB

~265.4 KiB of savings available

Remove unused JavaScript: 265.4 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=29030400 (48 weeks)
PASS
max-age=29030400 (48 weeks)
Info::
Cache-Control header is set
Got: public, max-age=29030400, immutable
Info::
Effective TTL: 48 weeks (max-age=29030400)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=29030400, immutable

DirectiveValueMeaning
public—Any cache may store this response
max-age29030400Cache for 48 weeks
immutable—Content will never change
Effective TTL: 29030400 seconds
Network Waterfall
11 requests over 779ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 3.1 s LCP 4.4 shttps://xpenv.com// https://xpenv.com/ — 200 — 6.6 KiB — 184 ms — h2https://xpenv.com/cdn-cgi/speculation/cdn-cgi/speculation https://xpenv.com/cdn-cgi/speculation — 200 — 457 B — 21 ms — h2https://xpenv.com/path-guard.js/path-guard.js https://xpenv.com/path-guard.js — 200 — 1.3 KiB — 76 ms — h2https://xpenv.com/assets/index-CgOUFYGR.js/assets/index-CgOUFYGR.js https://xpenv.com/assets/index-CgOUFYGR.js — 200 — 413.6 KiB — 155 ms — h2https://xpenv.com/assets/index-BX6_DtCa.css/assets/index-BX6_DtCa.css https://xpenv.com/assets/index-BX6_DtCa.css — 200 — 14.4 KiB — 141 ms — h2https://xpenv.com/manifest.json/manifest.json https://xpenv.com/manifest.json — 200 — 1.8 KiB — 122 ms — h2https://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 — 139 B — 36 ms — h2https://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 — 10.2 KiB — 22 ms — h2https://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 — 780 B — 193 ms — h3https://xpenv.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/1eec422858ff/0.7944530211207429:1780017030:M9hPW6TnNJwNgKf5MYxGLycahzz0I2UOWQtDdxcwGZI/a031e2204b82d622/cdn-cgi/challenge-platform/h/b/jsd... https://xpenv.com/cdn-cgi/challenge-platform/h/b/jsd/oneshot/1eec422858ff/0.7944530211207429:1780017030:M9hPW6TnNJwNgKf5MYxGLycahzz0I2UOWQtDdxcwGZI/a031e2204b82d622 — 200 — 550 B — 40 ms — h2
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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