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Performance

· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
96
GRADE
A
FIX
0
REVIEW
3
PASS
20
INFO
3

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

Mobile Desktop
99
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.
92
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.

1.15 s

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

1.85 s

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

48 ms

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

0.010

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

2.06 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.

1.85 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
26
20 PASS 3 REVIEW
B
JS Execution Cost
773ms total JS execution
REVIEW
773ms total JS execution
Warning::
Unattributable: 322ms CPU time
Info::
https://franckconsulting.it/main.js: 237ms CPU time
Info::
https://franckconsulting.it/: 213ms CPU time

Main Thread Breakdown

Other 50% Style & Layout 30% Rendering 8% Parse HTML & CSS 7% Script Evaluation 5%
ScriptTotalScriptingParse/CompileParty
Unattributable322ms5ms0ms1st
https://franckconsulting.it/main.js237ms26ms2ms1st
https://franckconsulting.it/213ms4ms1ms1st
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.
B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control

public, max-age=0, must-revalidate

DirectiveValueMeaning
public—Any cache may store this response
max-age0Cache for 0 seconds
must-revalidate—Must recheck with server after expiry
A+
Page Weight Budget
168 KB transferred, 14 requests
PASS
168 KB transferred, 14 requests
Info::
Page weighs 212 KB (168 KB transferred)
Info::
14 HTTP requests
Info::
Estimated 0.03 g CO2 per page load
168 KB / 2.4 MB budget
168 KB transferred
14 requests
0.03 g CO2 per page load
Images 77.9 KiB 46%
Fonts 59.7 KiB 36%
CSS 9.5 KiB 6%
HTML 9.1 KiB 5%
JavaScript 5.9 KiB 4%
Other 5.6 KiB 3%
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
4 images, 0 KB saveable
PASS
4 images, 0 KB saveable
Info::
All images are well-optimized
4 images 78 KB
0 oversized -0 KB
3 legacy format
0 missing dimensions CLS risk
A+
Font Loading
5 fonts (60 KB)
PASS
5 fonts (60 KB)
Info::
5 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

5

60 KB total

Render-blocking

0

of 5

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 1.2 s LCP 1.8 shttps://franckconsulting.it/assets/fonts/poppins-latin-700-normal.woff2poppins-latin-700-norma... https://franckconsulting.it/assets/fonts/poppins-latin-700-normal.woff2 — 8.1 KiB — 84 ms — font-display: swaphttps://franckconsulting.it/assets/fonts/poppins-latin-400-normal.woff2poppins-latin-400-norma... https://franckconsulting.it/assets/fonts/poppins-latin-400-normal.woff2 — 8.0 KiB — 54 ms — font-display: swaphttps://franckconsulting.it/assets/fonts/open-sauce-sans-latin-500-italic.woff2open-sauce-sans-latin-5... https://franckconsulting.it/assets/fonts/open-sauce-sans-latin-500-italic.woff2 — 26.2 KiB — 51 ms — font-display: swaphttps://franckconsulting.it/assets/fonts/poppins-latin-600-normal.woff2poppins-latin-600-norma... https://franckconsulting.it/assets/fonts/poppins-latin-600-normal.woff2 — 8.8 KiB — 38 ms — font-display: swaphttps://franckconsulting.it/assets/fonts/poppins-latin-500-normal.woff2poppins-latin-500-norma... https://franckconsulting.it/assets/fonts/poppins-latin-500-normal.woff2 — 8.5 KiB — 65 ms — font-display: swap
poppins-latin-700-norma... woff2 swap
Size 8 KB
Load time 84 ms
Start 145 ms
Risk FOUT — text flashes from fallback to web font
poppins-latin-400-norma... woff2 swap
Size 8 KB
Load time 54 ms
Start 147 ms
Risk FOUT — text flashes from fallback to web font
open-sauce-sans-latin-5... woff2 swap
Size 26 KB
Load time 51 ms
Start 147 ms
Risk FOUT — text flashes from fallback to web font
poppins-latin-600-norma... woff2 swap
Size 9 KB
Load time 38 ms
Start 283 ms
Risk FOUT — text flashes from fallback to web font
poppins-latin-500-norma... woff2 swap
Size 9 KB
Load time 65 ms
Start 283 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
1 scripts, 0 KB unused
PASS
1 scripts, 0 KB unused
0 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://franckconsulting.it/main.js6 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+
Document Compression
Document response uses brotli
PASS
Document 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 max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: public, max-age=0, must-revalidate
A
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: br` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
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
14 resources · 168 KB · 0 KB savings available
PASS
14 resources · 168 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 168 KB
14 resources · 167.7 KiB · 0 third-party Within 1MB page-weight target
Image 50% · 83.1 KiB
Font 36% · 59.7 KiB
CSS 6% · 9.5 KiB
Document 5% · 9.1 KiB
JavaScript 4% · 5.9 KiB
Other 0% · 484 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
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

Asset Compression
No text asset hosts to measure
INFO
No text asset hosts to measure
Info::
No third-party or subdomain host served enough text assets to measure
Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.
Network Waterfall
14 requests over 421ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 1.2 s LCP 1.8 shttps://franckconsulting.it// https://franckconsulting.it/ — 200 — 9.1 KiB — 95 ms — h2https://franckconsulting.it/cdn-cgi/speculation/cdn-cgi/speculation https://franckconsulting.it/cdn-cgi/speculation — 200 — 484 B — 48 ms — h2https://franckconsulting.it/assets/fonts/poppins-latin-700-normal.woff2/assets/fonts/poppins-latin-700-nor... https://franckconsulting.it/assets/fonts/poppins-latin-700-normal.woff2 — 200 — 8.1 KiB — 84 ms — h2https://franckconsulting.it/assets/fonts/poppins-latin-400-normal.woff2/assets/fonts/poppins-latin-400-nor... https://franckconsulting.it/assets/fonts/poppins-latin-400-normal.woff2 — 200 — 8.0 KiB — 54 ms — h2https://franckconsulting.it/assets/fonts/open-sauce-sans-latin-500-italic.woff2/assets/fonts/open-sauce-sans-latin... https://franckconsulting.it/assets/fonts/open-sauce-sans-latin-500-italic.woff2 — 200 — 26.2 KiB — 51 ms — h2https://franckconsulting.it/style.css/style.css https://franckconsulting.it/style.css — 200 — 9.5 KiB — 74 ms — h2https://franckconsulting.it/assets/logo.png/assets/logo.png https://franckconsulting.it/assets/logo.png — 200 — 13.7 KiB — 75 ms — h2https://franckconsulting.it/assets/franck-880.webp/assets/franck-880.webp https://franckconsulting.it/assets/franck-880.webp — 200 — 50.2 KiB — 73 ms — h2https://franckconsulting.it/assets/logo-white.png/assets/logo-white.png https://franckconsulting.it/assets/logo-white.png — 200 — 10.5 KiB — 46 ms — h2https://franckconsulting.it/main.js/main.js https://franckconsulting.it/main.js — 200 — 5.9 KiB — 47 ms — h2https://franckconsulting.it/assets/franck-avatar.jpg/assets/franck-avatar.jpg https://franckconsulting.it/assets/franck-avatar.jpg — 200 — 3.5 KiB — 74 ms — h2https://franckconsulting.it/assets/fonts/poppins-latin-600-normal.woff2/assets/fonts/poppins-latin-600-nor... https://franckconsulting.it/assets/fonts/poppins-latin-600-normal.woff2 — 200 — 8.8 KiB — 38 ms — h3https://franckconsulting.it/assets/fonts/poppins-latin-500-normal.woff2/assets/fonts/poppins-latin-500-nor... https://franckconsulting.it/assets/fonts/poppins-latin-500-normal.woff2 — 200 — 8.5 KiB — 65 ms — h3https://franckconsulting.it/favicon.ico/favicon.ico https://franckconsulting.it/favicon.ico — 200 — 5.1 KiB — 55 ms — h3
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization
1 images, 4 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

1

Total Size

4 KB

1 missing dimensions
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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