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https://linuxfr.org

Performance

· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
85
GRADE
B
FIX
2
REVIEW
8
PASS
9
INFO
3

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

Mobile Desktop
85
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
93
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
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.

777 ms

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

1.52 s

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

0 ms

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

0.199

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

777 ms

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

1.52 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
22
9 PASS 8 REVIEW 2 FIX
D
Third-Party Impact
Action
67% third-party, 0 ms blocking
FIX
67% third-party, 0 ms blocking
Warning::
Third-party code accounts for 67% of page weight (1.2 MiB of 1.8 MiB)
Info::
Third-party blocking time is low (0 ms)
33%
67%
First-party Third-party
D
Page Weight Inventory
Action
36 resources · 1.8 MB · 98 KB savings available
FIX
36 resources · 1.8 MB · 98 KB savings available
Warning::
Page weight 1.8 MB exceeds 1 MB target by 833 KB
Got: 1.8 MB Expected: ≤ 1 MB
Info::
~98 KB of savings available
Warning::
15 third-party resources (67% of weight)
Info::
2 resources over 200KB
36 resources · 1.8 MiB · 15 third-party 832.7 KiB over 1MB target
Image 72% · 1.3 MiB
Font 15% · 281.5 KiB
JavaScript 8% · 143.7 KiB
CSS 4% · 75.7 KiB
Document 1% · 20.5 KiB

~98.5 KiB of savings available

Remove unused JavaScript: 98.5 KiB
C
Page Weight Budget
Action
1.8 MB transferred, 36 requests
REVIEW
1.8 MB transferred, 36 requests
Info::
Page weighs 1.9 MB (1.8 MB transferred)
Warning::
Images are 1.3 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 1.3 MB
Info::
Fonts are 281 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 281 KB
Info::
36 HTTP requests
Info::
Estimated 0.38 g CO2 per page load
1.8 MB / 2.4 MB budget
1.8 MB transferred
36 requests
0.38 g CO2 per page load
Images 1.3 MiB 72%
Fonts 281.5 KiB 15%
JavaScript 143.7 KiB 8%
CSS 75.7 KiB 4%
HTML 20.5 KiB 1%
Other 2.0 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit

Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.

Why this matters

Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.

Source: web.dev

Subset fonts to include only used characters, or switch to system font stacks.

Why this matters

Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).

Source: web.dev font loading

C
Image Optimization
Action
28 images, 0 KB saveable
REVIEW
28 images, 0 KB saveable
Warning::
https://img.linuxfr.org/img/68747470733a2f2f706c61... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/22.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f656d6d... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f777777... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/92.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f706963... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/83.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f676d69... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f676d69... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f777777... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/70.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f786d70... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/19.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f777777... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/85.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f777777... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/66.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/9.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/16.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f706963... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://img.linuxfr.org/img/68747470733a2f2f692e69... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/1.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://linuxfr.org/images/sections/62.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
28 images 1.3 MB
0 oversized -0 KB
26 legacy format
23 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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 Bundles
1 scripts, 98 KB unused
REVIEW
1 scripts, 98 KB unused
Warning::
https://linuxfr.org/assets/application-479dcb6f903...: 98 KB unused (69%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 98 KB
98 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://linuxfr.org/assets/application-479dcb6f90370579ac2ba5b7b3f9da4886a7721e365e58032b9e93e6320695c7.js144 KB98 KB (69%)✓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.
B
Compression Algorithm
Main response uses gzip; brotli would be ~20% smaller
REVIEW
Main response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
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.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

B
HTTP Caching
max-age=0, private, must-revalidate
REVIEW
max-age=0, private, must-revalidate
Info::
Cache-Control header is set
Got: max-age=0, private, must-revalidate
Info::
ETag present — enables conditional (304) responses
Cache-Control

max-age=0, private, must-revalidate

DirectiveValueMeaning
max-age0Cache for 0 seconds
private—Only browser cache, not CDN/proxy
must-revalidate—Must recheck with server after expiry
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+
JS Execution Cost
227ms total JS execution
PASS
227ms total JS execution
Info::
https://linuxfr.org/: 160ms CPU time
Info::
Unattributable: 67ms CPU time

Main Thread Breakdown

Other 36% Style & Layout 36% Rendering 17% Script Evaluation 7%
ScriptTotalScriptingParse/CompileParty
https://linuxfr.org/160ms1ms0ms1st
Unattributable67ms1ms0ms1st
A+
Font Loading
2 fonts (281 KB)
PASS
2 fonts (281 KB)
Info::
2 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

2

281 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 500 ms 1.0 s 1.5 s FCP 777 ms LCP 1.5 shttps://linuxfr.org/fonts/Lato-Regular.woff2Lato-Regular.woff2 https://linuxfr.org/fonts/Lato-Regular.woff2 — 178.9 KiB — 707 ms — font-display: swaphttps://linuxfr.org/fonts/Merriweather-Regular.woff2Merriweather-Regular.woff2 https://linuxfr.org/fonts/Merriweather-Regular.woff2 — 102.6 KiB — 720 ms — font-display: swap
Lato-Regular.woff2 woff2 swap
Size 179 KB
Load time 707 ms
Start 401 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
Merriweather-Regular.woff2 woff2 swap
Size 103 KB
Load time 720 ms
Start 401 ms
Risk FOUT — text flashes from fallback to web font
  • Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
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)

Fixing the unchecked items could save ~141 KB and ~282 ms

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=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
Main HTML max-age=0 (≤ 5min) is appropriate
Got: max-age=0, private, 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: gzip` 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::
`ETag` present -- conditional GET supported
Network Waterfall
36 requests over 1437ms
INFO
0 ms 500 ms 1.0 s 1.5 s FCP 777 ms LCP 1.5 shttps://linuxfr.org// https://linuxfr.org/ — 200 — 20.5 KiB — 240 ms — h2https://linuxfr.org/assets/application-3ada03aed34c02e42ffd030d48ca5338cf11aa7dae15813951cfb12064311087.css/assets/application-3ada03aed34c02e... https://linuxfr.org/assets/application-3ada03aed34c02e42ffd030d48ca5338cf11aa7dae15813951cfb12064311087.css — 200 — 75.7 KiB — 85 ms — h2https://linuxfr.org/images/sections/92.png/images/sections/92.png https://linuxfr.org/images/sections/92.png — 200 — 5.1 KiB — 131 ms — h2https://img.linuxfr.org/img/68747470733a2f2f7777772e70726f6a6574732d6c69627265732e6f72672f77702d636f6e74656e742f75706c6f6164732f323032362f30372f50726f6a6574732d4c696272657378706f73746d61726b65744f532d373837783331332d312e706e67/Projets-LibresxpostmarketOS-787x313-1.pngimg.linuxfr.org/img/68747470733a2f2... https://img.linuxfr.org/img/68747470733a2f2f7777772e70726f6a6574732d6c69627265732e6f72672f77702d636f6e74656e742f75706c6f6164732f323032362f30372f50726f6a6574732d4c696272657378706f73746d61726b65744f532d373837783331332d312e706e67/Projets-LibresxpostmarketOS-787x313-1.png — 200 — 75.0 KiB — 183 ms — h2https://linuxfr.org/images/sections/70.png/images/sections/70.png https://linuxfr.org/images/sections/70.png — 200 — 4.4 KiB — 132 ms — h2https://img.linuxfr.org/img/68747470733a2f2f692e696d6775722e636f6d2f63773252496e652e6a7067/cw2RIne.jpgimg.linuxfr.org/img/68747470733a2f2... https://img.linuxfr.org/img/68747470733a2f2f692e696d6775722e636f6d2f63773252496e652e6a7067/cw2RIne.jpg — 200 — 46.6 KiB — 216 ms — h2https://linuxfr.org/images/sections/85.png/images/sections/85.png https://linuxfr.org/images/sections/85.png — 200 — 3.3 KiB — 234 ms — h2https://linuxfr.org/assets/application-479dcb6f90370579ac2ba5b7b3f9da4886a7721e365e58032b9e93e6320695c7.js/assets/application-479dcb6f9037057... https://linuxfr.org/assets/application-479dcb6f90370579ac2ba5b7b3f9da4886a7721e365e58032b9e93e6320695c7.js — 200 — 143.7 KiB — 325 ms — h2https://img.linuxfr.org/img/68747470733a2f2f7777772e70726f6a6574732d6c69627265732e6f72672f77702d636f6e74656e742f75706c6f6164732f323032362f30382f50726f6a6574732d4c69627265732d782d53746174652d6f662d7468652d4d61702d323032362d373638783433322d312e706e67/Projets-Libres-x-State-of-the-Map-2026-768x432-1.pngimg.linuxfr.org/img/68747470733a2f2... https://img.linuxfr.org/img/68747470733a2f2f7777772e70726f6a6574732d6c69627265732e6f72672f77702d636f6e74656e742f75706c6f6164732f323032362f30382f50726f6a6574732d4c69627265732d782d53746174652d6f662d7468652d4d61702d323032362d373638783433322d312e706e67/Projets-Libres-x-State-of-the-Map-2026-768x432-1.png — 200 — 159.2 KiB — 352 ms — h2https://linuxfr.org/images/sections/66.png/images/sections/66.png https://linuxfr.org/images/sections/66.png — 200 — 2.2 KiB — 369 ms — h2https://img.linuxfr.org/img/68747470733a2f2f786d70702e6f72672f696d616765732f6e6577736c65747465722f786d70705f6e6577736c65747465725f62616e6e65722e737667/xmpp_newsletter_banner.svgimg.linuxfr.org/img/68747470733a2f2... https://img.linuxfr.org/img/68747470733a2f2f786d70702e6f72672f696d616765732f6e6577736c65747465722f786d70705f6e6577736c65747465725f62616e6e65722e737667/xmpp_newsletter_banner.svg — 200 — 12.4 KiB — 387 ms — h2https://linuxfr.org/images/sections/1.png/images/sections/1.png https://linuxfr.org/images/sections/1.png — 200 — 2.3 KiB — 405 ms — h2https://linuxfr.org/images/sections/9.png/images/sections/9.png https://linuxfr.org/images/sections/9.png — 200 — 3.0 KiB — 440 ms — h2https://linuxfr.org/images/sections/62.png/images/sections/62.png https://linuxfr.org/images/sections/62.png — 200 — 4.3 KiB — 476 ms — h2https://img.linuxfr.org/img/68747470733a2f2f706c61792d6c682e676f6f676c6575736572636f6e74656e742e636f6d2f56697352735431794c504276636755584171482d316a674259384341474f314c5556394b76436970303865332d5653632d764c574d563665336e6a79505f6f5831786a7762724958656d3462796643374e4673753d773833322d683437302d7277/VisRsT1yLPBvcgUXAqH-1jgBY8CAGO1LUV9KvCip08e3-VSc-vLWMV6e3njyP_oX1xjwbrIXem4byfC7NFsu=w832-h470-rwimg.linuxfr.org/img/68747470733a2f2... https://img.linuxfr.org/img/68747470733a2f2f706c61792d6c682e676f6f676c6575736572636f6e74656e742e636f6d2f56697352735431794c504276636755584171482d316a674259384341474f314c5556394b76436970303865332d5653632d764c574d563665336e6a79505f6f5831786a7762724958656d3462796643374e4673753d773833322d683437302d7277/VisRsT1yLPBvcgUXAqH-1jgBY8CAGO1LUV9KvCip08e3-VSc-vLWMV6e3njyP_oX1xjwbrIXem4byfC7NFsu=w832-h470-rw — 200 — 318.2 KiB — 520 ms — h2https://img.linuxfr.org/img/68747470733a2f2f7069632e696e66696e692e66722f6b323743377375372f77454367674968342e706e67/wECggIh4.pngimg.linuxfr.org/img/68747470733a2f2... https://img.linuxfr.org/img/68747470733a2f2f7069632e696e66696e692e66722f6b323743377375372f77454367674968342e706e67/wECggIh4.png — 200 — 11.8 KiB — 649 ms — h2https://linuxfr.org/images/sections/22.png/images/sections/22.png https://linuxfr.org/images/sections/22.png — 200 — 3.1 KiB — 581 ms — h2https://linuxfr.org/images/sections/83.png/images/sections/83.png https://linuxfr.org/images/sections/83.png — 200 — 6.7 KiB — 632 ms — h2https://linuxfr.org/images/sections/16.png/images/sections/16.png https://linuxfr.org/images/sections/16.png — 200 — 13.7 KiB — 657 ms — h2https://linuxfr.org/images/sections/19.png/images/sections/19.png https://linuxfr.org/images/sections/19.png — 200 — 2.6 KiB — 725 ms — h2https://linuxfr.org/images/contrib/RonRonnement/background_html.png/images/contrib/RonRonnement/backgr... 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h2https://linuxfr.org/images/icones/download.svg/images/icones/download.svg https://linuxfr.org/images/icones/download.svg — 200 — 2.8 KiB — 758 ms — h2data:image/svg+xml;charset=utf-8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20widt…data:image/svg+xml;charset=utf-8,%3... data:image/svg+xml;charset=utf-8,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20widt… — 200 — 0 B — 0 ms — datahttps://linuxfr.org/fonts/Lato-Regular.woff2/fonts/Lato-Regular.woff2 https://linuxfr.org/fonts/Lato-Regular.woff2 — 200 — 178.9 KiB — 707 ms — h2https://linuxfr.org/fonts/Merriweather-Regular.woff2/fonts/Merriweather-Regular.woff2 https://linuxfr.org/fonts/Merriweather-Regular.woff2 — 200 — 102.6 KiB — 720 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-07-18 — 2026-08-14)

LCP (p75)

1160 ms

97% good

INP (p75)

53 ms

99% good

CLS (p75)

0.020

91% good

FCP (p75)

948 ms

TTFB (p75)

652 ms

This origin passes Core Web Vitals assessment
Image Optimization
27 images, 71 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

27

Total Size

71 KB

Oversized

5

27 missing dimensions 26 missing lazy loading
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