Skip to content
https://brian.fraval.org

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
88
GRADE
B
FIX
2
REVIEW
6
PASS
12
INFO
2

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

Mobile Desktop
83
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
68
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
96
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
91
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.

2.28 s

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

4.26 s

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

6 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.

2.46 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.

4.29 s

Page Load Progression

443 ms
887 ms
1.3 s
1.8 s
2.2 s
2.7 s
3.1 s
3.5 s
Checks
22
12 PASS 6 REVIEW 2 FIX
D
Third-Party Impact
Action
69% third-party, 0 ms blocking
FIX
69% third-party, 0 ms blocking
Warning::
Third-party code accounts for 69% of page weight (538.5 KiB of 783.5 KiB)
Info::
Third-party blocking time is low (0 ms)
31%
69%
First-party Third-party
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.

No Cache-Control header

Adding a Cache-Control header can significantly improve repeat-visit performance.

B
Image Optimization
4 images, 0 KB saveable
REVIEW
4 images, 0 KB saveable
Warning::
https://brian.fraval.org/images/1637506788823.jpeg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
4 images 615 KB
0 oversized -0 KB
3 legacy format
1 missing dimensions CLS risk

Set explicit width and height to prevent CLS.

Why this matters

Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.

Source: web.dev / Core Web Vitals

B
JS Execution Cost
995ms total JS execution
REVIEW
995ms total JS execution
Warning::
https://brian.fraval.org/: 678ms CPU time
Info::
Unattributable: 241ms CPU time
Info::
https://ajax.googleapis.com/ajax/libs/jquery/1.11....: 76ms CPU time
Info::
Third-party scripts: 317ms (32% of total)

Main Thread Breakdown

Other 48% Style & Layout 31% Rendering 8% Script Evaluation 8% Parse HTML & CSS 3%
ScriptTotalScriptingParse/CompileParty
https://brian.fraval.org/678ms4ms1ms1st
Unattributable241ms6ms0ms3rd
https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js76ms54ms10ms3rd
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
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
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
783 KB transferred, 17 requests
PASS
783 KB transferred, 17 requests
Info::
Page weighs 1002 KB (783 KB transferred)
Info::
17 HTTP requests
Info::
Estimated 0.16 g CO2 per page load
783 KB / 2.4 MB budget
783 KB transferred
17 requests
0.16 g CO2 per page load
Images 615.4 KiB 79%
Fonts 85.5 KiB 11%
JavaScript 45.7 KiB 6%
CSS 33.6 KiB 4%
HTML 3.1 KiB 0%
Other 291 B 0%
0 2.4 MB 4.9 MB
Under budget
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
2 fonts (85 KB)
PASS
2 fonts (85 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

85 KB total

Render-blocking

0

of 2

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.3 s LCP 4.3 shttps://cdn.linearicons.com/free/1.0.0/Linearicons-Free.woff2Linearicons-Free.woff2 https://cdn.linearicons.com/free/1.0.0/Linearicons-Free.woff2 — 22.0 KiB — 62 ms — font-display: swaphttps://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/fonts/fontawesome-webfont.woff2?v=4.4.0fontawesome-webfont.woff2 https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/fonts/fontawesome-webfont.woff2?v=4.4.0 — 63.5 KiB — 39 ms — font-display: swap
Linearicons-Free.woff2 woff2 swap
Size 22 KB
Load time 62 ms
Start 818 ms
Risk FOUT — text flashes from fallback to web font
fontawesome-webfont.woff2 woff2 swap
Size 63 KB
Load time 39 ms
Start 819 ms
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
4 scripts, 21 KB unused
PASS
4 scripts, 21 KB unused
Warning::
https://ajax.googleapis.com/ajax/libs/jquery/1.11....: 21 KB unused (65%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 21 KB
21 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js33 KB21 KB (65%)✓3rd
https://brian.fraval.org/js/bootstrap.min.js10 KB—✓1st
https://brian.fraval.org/js/scripts.js1 KB—✓1st
https://brian.fraval.org/js/konami.js1 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+
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
Page Weight Inventory
17 resources · 783 KB · 21 KB savings available
PASS
17 resources · 783 KB · 21 KB savings available
Info::
Within 1MB page-weight target
Got: 783 KB
Warning::
7 third-party resources (69% of weight)
Info::
1 resources over 200KB
17 resources · 783.5 KiB · 7 third-party Within 1MB page-weight target
Image 79% · 615.4 KiB
Font 11% · 85.5 KiB
JavaScript 6% · 45.7 KiB
CSS 4% · 33.6 KiB
Document 0% · 3.4 KiB

~21.2 KiB of savings available

Remove unused JavaScript: 21.2 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+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: OVHcloud

Network Waterfall
17 requests over 1234ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s FCP 2.3 s LCP 4.3 shttps://brian.fraval.org// https://brian.fraval.org/ — 200 — 3.1 KiB — 449 ms — h2https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.cssmaxcdn.bootstrapcdn.com/bootstrap/3... https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css — 200 — 20.4 KiB — 93 ms — h3https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.cssmaxcdn.bootstrapcdn.com/font-awesom... https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css — 200 — 6.4 KiB — 28 ms — h3https://cdn.linearicons.com/free/1.0.0/icon-font.min.csscdn.linearicons.com/free/1.0.0/icon... https://cdn.linearicons.com/free/1.0.0/icon-font.min.css — 200 — 2.3 KiB — 65 ms — h2https://brian.fraval.org/css/style.css/css/style.css https://brian.fraval.org/css/style.css — 200 — 2.7 KiB — 299 ms — h2https://brian.fraval.org/css/timeline.css/css/timeline.css https://brian.fraval.org/css/timeline.css — 200 — 1.8 KiB — 297 ms — h2https://brian.fraval.org/images/1637506788823.jpeg/images/1637506788823.jpeg https://brian.fraval.org/images/1637506788823.jpeg — 200 — 39.7 KiB — 294 ms — h2https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.jsajax.googleapis.com/ajax/libs/jquer... https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js — 200 — 33.3 KiB — 40 ms — h2https://brian.fraval.org/js/bootstrap.min.js/js/bootstrap.min.js https://brian.fraval.org/js/bootstrap.min.js — 200 — 10.1 KiB — 580 ms — h2https://brian.fraval.org/js/scripts.js/js/scripts.js https://brian.fraval.org/js/scripts.js — 200 — 1000 B — 293 ms — h2https://brian.fraval.org/js/konami.js/js/konami.js https://brian.fraval.org/js/konami.js — 200 — 1.3 KiB — 296 ms — h2https://brian.fraval.org/images/qrcode.png/images/qrcode.png https://brian.fraval.org/images/qrcode.png — 200 — 87.6 KiB — 574 ms — h2https://brian.fraval.org/images/1603180637550.jpeg/images/1603180637550.jpeg https://brian.fraval.org/images/1603180637550.jpeg — 200 — 97.5 KiB — 283 ms — h2https://images.unsplash.com/photo-1456983933114-c22026990f4b?dpr=2&auto=format&crop=entropy&fit=crop&w=1280&h=720&q=80images.unsplash.com/photo-145698393... https://images.unsplash.com/photo-1456983933114-c22026990f4b?dpr=2&auto=format&crop=entropy&fit=crop&w=1280&h=720&q=80 — 200 — 390.6 KiB — 85 ms — h2https://cdn.linearicons.com/free/1.0.0/Linearicons-Free.woff2cdn.linearicons.com/free/1.0.0/Line... https://cdn.linearicons.com/free/1.0.0/Linearicons-Free.woff2 — 200 — 22.0 KiB — 62 ms — h2https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/fonts/fontawesome-webfont.woff2?v=4.4.0maxcdn.bootstrapcdn.com/font-awesom... https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/fonts/fontawesome-webfont.woff2?v=4.4.0 — 200 — 63.5 KiB — 39 ms — h3https://brian.fraval.org/favicon.ico/favicon.ico https://brian.fraval.org/favicon.ico — 404 — 291 B — 149 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
32% of JavaScript execution is third-party
First-party Third-party 317ms · 33KB · €3/mo
Unattributable
Other
Costly
Execution 241ms
Transfer 0 KB
Monthly Cost €3/mo
ajax.googleapis.com
Other
Optional
Execution 76ms
Transfer 33 KB
Unused 65%
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 241ms and costs ~€3/month

Unattributable takes 241ms 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

65% of ajax.googleapis.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

How third-party costs are calculated

All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

Send Feedback