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Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
91
GRADE
A
FIX
1
REVIEW
4
PASS
18
INFO
3

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

Mobile Desktop
98
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
81
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.

1.32 s

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

1.42 s

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

133 ms

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

0.038

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

2.54 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.

2.34 s

Page Load Progression

533 ms
1.1 s
1.6 s
2.1 s
2.7 s
3.2 s
3.7 s
4.3 s
Checks
26
18 PASS 4 REVIEW 1 FIX
D
JS Execution Cost
Action
2225ms total JS execution
FIX
2225ms total JS execution
Warning::
https://beavercheck.com/: 1464ms CPU time
Warning::
Unattributable: 494ms CPU time
Info::
https://beavercheck.com/static/js/alpine.min.js?v=...: 213ms CPU time
Info::
https://beavercheck.com/static/js/htmx.min.js?v=d0...: 54ms CPU time
Info::
Third-party scripts: 494ms (22% of total)

Main Thread Breakdown

Style & Layout 40% Other 33% Script Evaluation 12% Rendering 10%
ScriptTotalScriptingParse/CompileParty
https://beavercheck.com/1464ms18ms1ms1st
Unattributable494ms9ms0ms3rd
https://beavercheck.com/static/js/alpine.min.js?v=d069ba1b213ms190ms9ms1st
https://beavercheck.com/static/js/htmx.min.js?v=d069ba1b54ms45ms7ms1st
B
Image Optimization
10 images, 0 KB saveable
REVIEW
10 images, 0 KB saveable
Info::
All images are well-optimized
10 images 154 KB
0 oversized -0 KB
9 legacy format
0 missing dimensions CLS risk
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
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
A
Page Weight Budget
868 KB transferred, 27 requests
PASS
868 KB transferred, 27 requests
Info::
Page weighs 1.2 MB (868 KB transferred)
Info::
27 HTTP requests
Info::
Estimated 0.18 g CO2 per page load
868 KB / 2.4 MB budget
868 KB transferred
27 requests
0.18 g CO2 per page load
Other 521.9 KiB 60%
Images 154.2 KiB 18%
Fonts 95.4 KiB 11%
JavaScript 55.8 KiB 6%
CSS 20.3 KiB 2%
HTML 19.3 KiB 2%
Other 827 B 0%
Other 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+
Font Loading
4 fonts (95 KB)
PASS
4 fonts (95 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

95 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 500 ms 1.0 s 1.5 s FCP 1.3 s LCP 1.4 shttps://beavercheck.com/static/fonts/inter-400.woff2inter-400.woff2 https://beavercheck.com/static/fonts/inter-400.woff2 — 23.3 KiB — 580 ms — font-display: swaphttps://beavercheck.com/static/fonts/inter-600.woff2inter-600.woff2 https://beavercheck.com/static/fonts/inter-600.woff2 — 24.1 KiB — 583 ms — font-display: swaphttps://beavercheck.com/static/fonts/inter-500.woff2inter-500.woff2 https://beavercheck.com/static/fonts/inter-500.woff2 — 23.9 KiB — 588 ms — font-display: swaphttps://beavercheck.com/static/fonts/inter-700.woff2inter-700.woff2 https://beavercheck.com/static/fonts/inter-700.woff2 — 24.0 KiB — 588 ms — font-display: swap
inter-400.woff2 woff2 swap
Size 23 KB
Load time 580 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
inter-600.woff2 woff2 swap
Size 24 KB
Load time 583 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
inter-500.woff2 woff2 swap
Size 24 KB
Load time 588 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
inter-700.woff2 woff2 swap
Size 24 KB
Load time 588 ms
Start 1.3 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)
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://beavercheck.com/static/js/htmx.min.js?v=d069ba1b19 KB—✓1st
https://beavercheck.com/static/js/htmx-config.js?v=d069ba1b0 KB—✓1st
https://beavercheck.com/static/js/bar-styles.js?v=d069ba1b1 KB—✓1st
https://beavercheck.com/static/js/components.js?v=d069ba1b6 KB—✓1st
https://beavercheck.com/static/js/alpine.min.js?v=d069ba1b22 KB—✓1st
https://beavercheck.com/static/js/app.js?v=d069ba1b5 KB—✓1st
https://beavercheck.com/static/js/actions.js?v=d069ba1b3 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+
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 max-age=60 (≤ 5min) is appropriate
PASS
Main HTML max-age=60 (≤ 5min) is appropriate
Info::
Main HTML max-age=60 (≤ 5min) is appropriate
Got: public, max-age=60
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
27 resources · 868 KB · 0 KB savings available
PASS
27 resources · 868 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 868 KB
Info::
1 resources over 200KB
27 resources · 867.7 KiB · 0 third-party Within 1MB page-weight target
Media 60% · 521.9 KiB
Image 18% · 154.2 KiB
Font 11% · 95.4 KiB
JavaScript 6% · 55.8 KiB
CSS 2% · 20.3 KiB
Document 2% · 19.3 KiB
Other 0% · 827 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: OVHcloud

A
HTTP Caching
max-age=60 (1 minute)
PASS
max-age=60 (1 minute)
Info::
Cache-Control header is set
Got: public, max-age=60
Info::
Effective TTL: 1 minute (max-age=60)
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=60

DirectiveValueMeaning
public—Any cache may store this response
max-age60Cache for 1 minute
Effective TTL: 60 seconds
Network Waterfall
27 requests over 1939ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s FCP 1.3 s LCP 1.4 shttps://beavercheck.com// https://beavercheck.com/ — 200 — 19.3 KiB — 1.0 s — h2https://beavercheck.com/static/css/output.css?v=d069ba1b/static/css/output.css?v=d069ba1b https://beavercheck.com/static/css/output.css?v=d069ba1b — 200 — 20.3 KiB — 350 ms — h2https://beavercheck.com/static/js/htmx.min.js?v=d069ba1b/static/js/htmx.min.js?v=d069ba1b https://beavercheck.com/static/js/htmx.min.js?v=d069ba1b — 200 — 18.6 KiB — 405 ms — h2https://beavercheck.com/static/img/beaver.svg/static/img/beaver.svg https://beavercheck.com/static/img/beaver.svg — 200 — 2.0 KiB — 347 ms — h2https://beavercheck.com/static/js/htmx-config.js?v=d069ba1b/static/js/htmx-config.js?v=d069ba1... https://beavercheck.com/static/js/htmx-config.js?v=d069ba1b — 200 — 367 B — 397 ms — h2https://beavercheck.com/static/js/bar-styles.js?v=d069ba1b/static/js/bar-styles.js?v=d069ba1b https://beavercheck.com/static/js/bar-styles.js?v=d069ba1b — 200 — 1.1 KiB — 397 ms — h2https://beavercheck.com/static/js/components.js?v=d069ba1b/static/js/components.js?v=d069ba1b https://beavercheck.com/static/js/components.js?v=d069ba1b — 200 — 6.2 KiB — 398 ms — h2https://beavercheck.com/static/js/alpine.min.js?v=d069ba1b/static/js/alpine.min.js?v=d069ba1b https://beavercheck.com/static/js/alpine.min.js?v=d069ba1b — 200 — 22.0 KiB — 438 ms — h2https://beavercheck.com/static/js/app.js?v=d069ba1b/static/js/app.js?v=d069ba1b https://beavercheck.com/static/js/app.js?v=d069ba1b — 200 — 4.8 KiB — 530 ms — h2https://beavercheck.com/static/js/actions.js?v=d069ba1b/static/js/actions.js?v=d069ba1b https://beavercheck.com/static/js/actions.js?v=d069ba1b — 200 — 2.9 KiB — 532 ms — h2https://beavercheck.com/static/site.webmanifest/static/site.webmanifest https://beavercheck.com/static/site.webmanifest — 200 — 827 B — 612 ms — h2https://beavercheck.com/static/video/product-tour-poster.jpg/static/video/product-tour-poster.j... https://beavercheck.com/static/video/product-tour-poster.jpg — 200 — 76.4 KiB — 455 ms — h2https://beavercheck.com/static/img/flags/br.svg/static/img/flags/br.svg https://beavercheck.com/static/img/flags/br.svg — 200 — 1.3 KiB — 455 ms — h2https://beavercheck.com/static/img/flags/nl.svg/static/img/flags/nl.svg https://beavercheck.com/static/img/flags/nl.svg — 200 — 329 B — 456 ms — h2https://beavercheck.com/static/img/flags/sg.svg/static/img/flags/sg.svg https://beavercheck.com/static/img/flags/sg.svg — 200 — 479 B — 458 ms — h2https://beavercheck.com/static/img/flags/es.svg/static/img/flags/es.svg https://beavercheck.com/static/img/flags/es.svg — 200 — 326 B — 459 ms — h2https://beavercheck.com/static/img/flags/us.svg/static/img/flags/us.svg https://beavercheck.com/static/img/flags/us.svg — 200 — 521 B — 458 ms — h2https://beavercheck.com/static/video/product-tour.webm/static/video/product-tour.webm https://beavercheck.com/static/video/product-tour.webm — 206 — 521.9 KiB — 854 ms — h2https://beavercheck.com/favicons/threatmodeler.com.png/favicons/threatmodeler.com.png https://beavercheck.com/favicons/threatmodeler.com.png — 200 — 3.0 KiB — 580 ms — h2https://beavercheck.com/favicons/potentialspouse.com.png/favicons/potentialspouse.com.png https://beavercheck.com/favicons/potentialspouse.com.png — 200 — 3.1 KiB — 581 ms — h2https://beavercheck.com/static/img/screenshots/result-overview-light.webp/static/img/screenshots/result-over... https://beavercheck.com/static/img/screenshots/result-overview-light.webp — 200 — 66.8 KiB — 617 ms — h2https://beavercheck.com/static/fonts/inter-400.woff2/static/fonts/inter-400.woff2 https://beavercheck.com/static/fonts/inter-400.woff2 — 200 — 23.3 KiB — 580 ms — h2https://beavercheck.com/static/fonts/inter-600.woff2/static/fonts/inter-600.woff2 https://beavercheck.com/static/fonts/inter-600.woff2 — 200 — 24.1 KiB — 583 ms — h2https://beavercheck.com/static/fonts/inter-500.woff2/static/fonts/inter-500.woff2 https://beavercheck.com/static/fonts/inter-500.woff2 — 200 — 23.9 KiB — 588 ms — h2https://beavercheck.com/static/fonts/inter-700.woff2/static/fonts/inter-700.woff2 https://beavercheck.com/static/fonts/inter-700.woff2 — 200 — 24.0 KiB — 588 ms — h2https://beavercheck.com/static/img/beaver.svg/static/img/beaver.svg https://beavercheck.com/static/img/beaver.svg — 200 — 0 B — 3 ms — h2https://beavercheck.com/static/img/beaver.svg/static/img/beaver.svg https://beavercheck.com/static/img/beaver.svg — 200 — 0 B — 4 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
22% of JavaScript execution is third-party
First-party Third-party 494ms · 0KB · €7/mo
Unattributable
Other
Costly
Execution 494ms
Transfer 0 KB
Monthly Cost €7/mo

These scripts may cost more than they're worth

  • Unattributable adds 494ms and costs ~€7/month

Unattributable takes 494ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.

Why this matters

This script has high main-thread execution time — optimize hot paths or defer.

Source: web.dev

How third-party costs are calculated

Image Optimization
29 images, 163 KB total, 122 KB wasted
INFO

Image Optimization Audit

Total Images

29

Total Size

163 KB

Oversized

16

Wasted

122 KB

10 missing alt text 9 missing dimensions 8 missing lazy loading
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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