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Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
73
GRADE
C
FIX
5
REVIEW
3
PASS
5
INFO
2

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

Mobile Desktop
89
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
96
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.
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.

1.07 s

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

1.89 s

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

74 ms

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

0.004

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

1.18 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.

3.30 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
15
5 PASS 3 REVIEW 5 FIX
D
Page Weight Budget
Action
2.4 MB transferred, 45 requests
FIX
2.4 MB transferred, 45 requests
Warning::
Page weighs 2.5 MB (2.4 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
Warning::
JavaScript is 717 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 717 KB
Info::
Fonts are 345 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 345 KB
Info::
45 HTTP requests
Info::
Estimated 0.51 g CO2 per page load
2.4 MB / 2.4 MB budget
2.4 MB transferred
45 requests
0.51 g CO2 per page load
Images 1.3 MiB 52%
JavaScript 716.6 KiB 29%
Fonts 344.9 KiB 14%
Other 83.9 KiB 3%
HTML 27.0 KiB 1%
CSS 24.7 KiB 1%
Other 2.0 KiB 0%
Other 1.2 KiB 0%
Other 170 B 0%
0 2.4 MB 4.9 MB
Over budget

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

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

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

D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (2.4 MiB of 2.4 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
F
JS Bundles
Action
6 scripts, 348 KB unused
FIX
6 scripts, 348 KB unused
Warning::
https://www.gnome.org/js/three.min.js: 324 KB unused (55%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gnome.org/js/GLTFLoader.js: 24 KB unused (25%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gnome.org/js/GLTFLoader.js: unminified — 32 KB could be saved
Info::
Total unused JavaScript: 348 KB
348 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gnome.org/js/three.min.js590 KB324 KB (55%)✓3rd
https://www.gnome.org/js/GLTFLoader.js95 KB24 KB (25%)✗3rd
https://www.gnome.org/js/i18n.js2 KB—✓3rd
https://www.gnome.org/js/helpers.js2 KB—✓3rd
https://webstats.gnome.org/matomo.js22 KB—✓3rd
https://www.gnome.org/js/3dlid.js5 KB—✗3rd

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

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

D
Page Weight Inventory
Action
45 resources · 2.4 MB · 348 KB savings available
FIX
45 resources · 2.4 MB · 348 KB savings available
Warning::
Page weight 1.4 MB over 1MB target
Got: 2.4 MB Expected: ≤ 1 MB
Info::
~348 KB of savings available
Warning::
44 third-party resources (100% of weight)
Info::
4 resources over 200KB
45 resources · 2.4 MiB · 44 third-party 1.4 MiB over 1MB target
Image 52% · 1.3 MiB
JavaScript 29% · 716.6 KiB
Font 14% · 344.9 KiB
Other 3% · 85.9 KiB
Document 1% · 27.3 KiB
CSS 1% · 24.7 KiB

~347.7 KiB of savings available

Remove unused JavaScript: 347.7 KiB
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.

C
Image Optimization
Action
28 images, 0 KB saveable
REVIEW
28 images, 0 KB saveable
Warning::
https://www.gnome.org/img/shell.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/workspaces-l.webp is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/canonical.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/redhat.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/endless.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/cloudns.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/equinix.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/design.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/osl.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/aws.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/macstadium.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/miniorange.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/apps.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/google.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/suse.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/abusix.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/cdn.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/digitalocean.sv... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/codethink.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/igalia.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.gnome.org/img/sponsors/fastly.svg 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
24 legacy format
21 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

B
JS Execution Cost
805ms total JS execution
REVIEW
805ms total JS execution
Warning::
https://www.gnome.org/: 465ms CPU time
Warning::
Unattributable: 340ms CPU time
Warning::
Third-party scripts: 805ms (100% of total)

Main Thread Breakdown

Other 60% Script Evaluation 28% Style & Layout 7%
ScriptTotalScriptingParse/CompileParty
https://www.gnome.org/465ms1ms0ms3rd
Unattributable340ms200ms0ms3rd
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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
1 fonts (345 KB)
PASS
1 fonts (345 KB)
Info::
1 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

1

345 KB total

Render-blocking

0

of 1

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 1.1 s LCP 1.9 shttps://static.gnome.org/fonts/InterVariable.woff2InterVariable.woff2 https://static.gnome.org/fonts/InterVariable.woff2 — 344.9 KiB — 213 ms — font-display: swap
InterVariable.woff2 woff2 swap
Size 345 KB
Load time 213 ms
Start 1.0 s
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 ~172 KB and ~344 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
Network Waterfall
45 requests over 2800ms
INFO
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.1 s LCP 1.9 shttps://gnome.org// https://gnome.org/ — 301 — 173 B — 297 ms — http/1.1https://www.gnome.org/www.gnome.org/ https://www.gnome.org/ — 200 — 27.0 KiB — 466 ms — http/1.1https://static.gnome.org/css/inter.cssstatic.gnome.org/css/inter.css https://static.gnome.org/css/inter.css — 200 — 1.2 KiB — 89 ms — h2https://www.gnome.org/style.csswww.gnome.org/style.css https://www.gnome.org/style.css — 200 — 23.5 KiB — 228 ms — http/1.1https://www.gnome.org/js/i18n.jswww.gnome.org/js/i18n.js https://www.gnome.org/js/i18n.js — 200 — 2.5 KiB — 330 ms — http/1.1https://www.gnome.org/js/helpers.jswww.gnome.org/js/helpers.js https://www.gnome.org/js/helpers.js — 200 — 2.5 KiB — 326 ms — http/1.1https://www.gnome.org/img/laptop.webpwww.gnome.org/img/laptop.webp https://www.gnome.org/img/laptop.webp — 200 — 76.9 KiB — 481 ms — http/1.1https://www.gnome.org/img/shell.svgwww.gnome.org/img/shell.svg https://www.gnome.org/img/shell.svg — 200 — 52.0 KiB — 433 ms — http/1.1https://www.gnome.org/img/workspaces-l.webpwww.gnome.org/img/workspaces-l.webp https://www.gnome.org/img/workspaces-l.webp — 200 — 194.8 KiB — 616 ms — http/1.1https://www.gnome.org/img/apps.svgwww.gnome.org/img/apps.svg https://www.gnome.org/img/apps.svg — 200 — 94.9 KiB — 340 ms — http/1.1https://www.gnome.org/img/circle-illu.svgwww.gnome.org/img/circle-illu.svg https://www.gnome.org/img/circle-illu.svg — 200 — 58.3 KiB — 325 ms — http/1.1https://www.gnome.org/js/three.min.jswww.gnome.org/js/three.min.js https://www.gnome.org/js/three.min.js — 200 — 589.7 KiB — 620 ms — http/1.1https://www.gnome.org/languages.jsonwww.gnome.org/languages.json https://www.gnome.org/languages.json — 200 — 2.0 KiB — 277 ms — http/1.1https://webstats.gnome.org/matomo.jswebstats.gnome.org/matomo.js https://webstats.gnome.org/matomo.js — 200 — 21.9 KiB — 404 ms — http/1.1https://www.gnome.org/img/tris-l.svgwww.gnome.org/img/tris-l.svg https://www.gnome.org/img/tris-l.svg — 200 — 9.7 KiB — 293 ms — http/1.1https://static.gnome.org/fonts/InterVariable.woff2static.gnome.org/fonts/InterVariabl... https://static.gnome.org/fonts/InterVariable.woff2 — 200 — 344.9 KiB — 213 ms — h2https://www.gnome.org/js/GLTFLoader.jswww.gnome.org/js/GLTFLoader.js https://www.gnome.org/js/GLTFLoader.js — 200 — 94.7 KiB — 234 ms — http/1.1https://www.gnome.org/js/3dlid.jswww.gnome.org/js/3dlid.js https://www.gnome.org/js/3dlid.js — 200 — 5.4 KiB — 136 ms — http/1.1https://www.gnome.org/img/flathub-illu.svgwww.gnome.org/img/flathub-illu.svg https://www.gnome.org/img/flathub-illu.svg — 200 — 315.1 KiB — 316 ms — http/1.1https://www.gnome.org/img/devs-illu.svgwww.gnome.org/img/devs-illu.svg https://www.gnome.org/img/devs-illu.svg — 200 — 252.8 KiB — 324 ms — http/1.1https://www.gnome.org/img/design.svgwww.gnome.org/img/design.svg https://www.gnome.org/img/design.svg — 200 — 28.8 KiB — 146 ms — http/1.1https://www.gnome.org/img/download.webpwww.gnome.org/img/download.webp https://www.gnome.org/img/download.webp — 200 — 123.2 KiB — 234 ms — http/1.1https://webstats.gnome.org/matomo.php?action_name=GNOME%20%E2%80%94%20An%20independent%20computing%20platform%20for%20everyone&idsite=1&rec=1&r=360032&h=20&m=11&s=42&url=https%3A%2F%2Fwww.gnome.org%2F&_id=07b870519fa469e9&_idn=1&send_image=0&_refts=0&pv_id=mfSSDb&pf_net=208&pf_srv=155&pf_tfr=103&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.101%22%7D%2C%7B%22brand%22%3A%22Not.A%2FBrand%22%2C%22version%22%3A%228.0.0.0%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600webstats.gnome.org/matomo.php?actio... https://webstats.gnome.org/matomo.php?action_name=GNOME%20%E2%80%94%20An%20independent%20computing%20platform%20for%20everyone&idsite=1&rec=1&r=360032&h=20&m=11&s=42&url=https%3A%2F%2Fwww.gnome.org%2F&_id=07b870519fa469e9&_idn=1&send_image=0&_refts=0&pv_id=mfSSDb&pf_net=208&pf_srv=155&pf_tfr=103&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.101%22%7D%2C%7B%22brand%22%3A%22Not.A%2FBrand%22%2C%22version%22%3A%228.0.0.0%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600 — 204 — 170 B — 116 ms — http/1.1https://www.gnome.org/img/sponsors/google.svgwww.gnome.org/img/sponsors/google.s... https://www.gnome.org/img/sponsors/google.svg — 200 — 5.7 KiB — 148 ms — http/1.1https://www.gnome.org/img/sponsors/suse.svgwww.gnome.org/img/sponsors/suse.svg https://www.gnome.org/img/sponsors/suse.svg — 200 — 5.5 KiB — 140 ms — http/1.1https://www.gnome.org/img/sponsors/canonical.svgwww.gnome.org/img/sponsors/canonica... https://www.gnome.org/img/sponsors/canonical.svg — 200 — 7.9 KiB — 137 ms — http/1.1https://www.gnome.org/img/sponsors/codethink.svgwww.gnome.org/img/sponsors/codethin... https://www.gnome.org/img/sponsors/codethink.svg — 200 — 7.7 KiB — 131 ms — http/1.1https://www.gnome.org/img/sponsors/redhat.svgwww.gnome.org/img/sponsors/redhat.s... https://www.gnome.org/img/sponsors/redhat.svg — 200 — 2.8 KiB — 128 ms — http/1.1https://www.gnome.org/img/sponsors/endless.svgwww.gnome.org/img/sponsors/endless.... https://www.gnome.org/img/sponsors/endless.svg — 200 — 2.6 KiB — 131 ms — http/1.1https://www.gnome.org/img/sponsors/igalia.svgwww.gnome.org/img/sponsors/igalia.s... https://www.gnome.org/img/sponsors/igalia.svg — 200 — 8.6 KiB — 171 ms — http/1.1
0 ms 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 1.1 s LCP 1.9 shttps://gnome.org// https://gnome.org/ — 301 — 173 B — 297 ms — http/1.1https://www.gnome.org/www.gnome.org/ https://www.gnome.org/ — 200 — 27.0 KiB — 466 ms — http/1.1https://static.gnome.org/css/inter.cssstatic.gnome.org/css/inter.css https://static.gnome.org/css/inter.css — 200 — 1.2 KiB — 89 ms — h2https://www.gnome.org/style.csswww.gnome.org/style.css https://www.gnome.org/style.css — 200 — 23.5 KiB — 228 ms — http/1.1https://www.gnome.org/js/i18n.jswww.gnome.org/js/i18n.js https://www.gnome.org/js/i18n.js — 200 — 2.5 KiB — 330 ms — http/1.1https://www.gnome.org/js/helpers.jswww.gnome.org/js/helpers.js https://www.gnome.org/js/helpers.js — 200 — 2.5 KiB — 326 ms — http/1.1https://www.gnome.org/img/laptop.webpwww.gnome.org/img/laptop.webp https://www.gnome.org/img/laptop.webp — 200 — 76.9 KiB — 481 ms — http/1.1https://www.gnome.org/img/shell.svgwww.gnome.org/img/shell.svg https://www.gnome.org/img/shell.svg — 200 — 52.0 KiB — 433 ms — http/1.1https://www.gnome.org/img/workspaces-l.webpwww.gnome.org/img/workspaces-l.webp https://www.gnome.org/img/workspaces-l.webp — 200 — 194.8 KiB — 616 ms — http/1.1https://www.gnome.org/img/apps.svgwww.gnome.org/img/apps.svg https://www.gnome.org/img/apps.svg — 200 — 94.9 KiB — 340 ms — http/1.1https://www.gnome.org/img/circle-illu.svgwww.gnome.org/img/circle-illu.svg https://www.gnome.org/img/circle-illu.svg — 200 — 58.3 KiB — 325 ms — http/1.1https://www.gnome.org/js/three.min.jswww.gnome.org/js/three.min.js https://www.gnome.org/js/three.min.js — 200 — 589.7 KiB — 620 ms — http/1.1https://www.gnome.org/languages.jsonwww.gnome.org/languages.json https://www.gnome.org/languages.json — 200 — 2.0 KiB — 277 ms — http/1.1https://webstats.gnome.org/matomo.jswebstats.gnome.org/matomo.js https://webstats.gnome.org/matomo.js — 200 — 21.9 KiB — 404 ms — http/1.1https://www.gnome.org/img/tris-l.svgwww.gnome.org/img/tris-l.svg https://www.gnome.org/img/tris-l.svg — 200 — 9.7 KiB — 293 ms — http/1.1https://static.gnome.org/fonts/InterVariable.woff2static.gnome.org/fonts/InterVariabl... https://static.gnome.org/fonts/InterVariable.woff2 — 200 — 344.9 KiB — 213 ms — h2https://www.gnome.org/js/GLTFLoader.jswww.gnome.org/js/GLTFLoader.js https://www.gnome.org/js/GLTFLoader.js — 200 — 94.7 KiB — 234 ms — http/1.1https://www.gnome.org/js/3dlid.jswww.gnome.org/js/3dlid.js https://www.gnome.org/js/3dlid.js — 200 — 5.4 KiB — 136 ms — http/1.1https://www.gnome.org/img/flathub-illu.svgwww.gnome.org/img/flathub-illu.svg https://www.gnome.org/img/flathub-illu.svg — 200 — 315.1 KiB — 316 ms — http/1.1https://www.gnome.org/img/devs-illu.svgwww.gnome.org/img/devs-illu.svg https://www.gnome.org/img/devs-illu.svg — 200 — 252.8 KiB — 324 ms — http/1.1https://www.gnome.org/img/design.svgwww.gnome.org/img/design.svg https://www.gnome.org/img/design.svg — 200 — 28.8 KiB — 146 ms — http/1.1https://www.gnome.org/img/download.webpwww.gnome.org/img/download.webp https://www.gnome.org/img/download.webp — 200 — 123.2 KiB — 234 ms — http/1.1https://webstats.gnome.org/matomo.php?action_name=GNOME%20%E2%80%94%20An%20independent%20computing%20platform%20for%20everyone&idsite=1&rec=1&r=360032&h=20&m=11&s=42&url=https%3A%2F%2Fwww.gnome.org%2F&_id=07b870519fa469e9&_idn=1&send_image=0&_refts=0&pv_id=mfSSDb&pf_net=208&pf_srv=155&pf_tfr=103&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.101%22%7D%2C%7B%22brand%22%3A%22Not.A%2FBrand%22%2C%22version%22%3A%228.0.0.0%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600webstats.gnome.org/matomo.php?actio... https://webstats.gnome.org/matomo.php?action_name=GNOME%20%E2%80%94%20An%20independent%20computing%20platform%20for%20everyone&idsite=1&rec=1&r=360032&h=20&m=11&s=42&url=https%3A%2F%2Fwww.gnome.org%2F&_id=07b870519fa469e9&_idn=1&send_image=0&_refts=0&pv_id=mfSSDb&pf_net=208&pf_srv=155&pf_tfr=103&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.101%22%7D%2C%7B%22brand%22%3A%22Not.A%2FBrand%22%2C%22version%22%3A%228.0.0.0%22%7D%5D%2C%22mobile%22%3Afalse%2C%22model%22%3A%22%22%2C%22platform%22%3A%22macOS%22%2C%22platformVersion%22%3A%2210.15.7%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=800x600 — 204 — 170 B — 116 ms — http/1.1https://www.gnome.org/img/sponsors/google.svgwww.gnome.org/img/sponsors/google.s... https://www.gnome.org/img/sponsors/google.svg — 200 — 5.7 KiB — 148 ms — http/1.1https://www.gnome.org/img/sponsors/suse.svgwww.gnome.org/img/sponsors/suse.svg https://www.gnome.org/img/sponsors/suse.svg — 200 — 5.5 KiB — 140 ms — http/1.1https://www.gnome.org/img/sponsors/canonical.svgwww.gnome.org/img/sponsors/canonica... https://www.gnome.org/img/sponsors/canonical.svg — 200 — 7.9 KiB — 137 ms — http/1.1https://www.gnome.org/img/sponsors/codethink.svgwww.gnome.org/img/sponsors/codethin... https://www.gnome.org/img/sponsors/codethink.svg — 200 — 7.7 KiB — 131 ms — http/1.1https://www.gnome.org/img/sponsors/redhat.svgwww.gnome.org/img/sponsors/redhat.s... https://www.gnome.org/img/sponsors/redhat.svg — 200 — 2.8 KiB — 128 ms — http/1.1https://www.gnome.org/img/sponsors/endless.svgwww.gnome.org/img/sponsors/endless.... https://www.gnome.org/img/sponsors/endless.svg — 200 — 2.6 KiB — 131 ms — http/1.1https://www.gnome.org/img/sponsors/igalia.svgwww.gnome.org/img/sponsors/igalia.s... https://www.gnome.org/img/sponsors/igalia.svg — 200 — 8.6 KiB — 171 ms — http/1.1https://www.gnome.org/img/sponsors/cloudns.svgwww.gnome.org/img/sponsors/cloudns.... https://www.gnome.org/img/sponsors/cloudns.svg — 200 — 4.4 KiB — 141 ms — http/1.1https://www.gnome.org/img/3dlid.gltfwww.gnome.org/img/3dlid.gltf https://www.gnome.org/img/3dlid.gltf — 200 — 9.4 KiB — 203 ms — http/1.1https://www.gnome.org/img/sponsors/abusix.svgwww.gnome.org/img/sponsors/abusix.s... https://www.gnome.org/img/sponsors/abusix.svg — 200 — 10.4 KiB — 136 ms — http/1.1https://www.gnome.org/img/sponsors/fastly.svgwww.gnome.org/img/sponsors/fastly.s... https://www.gnome.org/img/sponsors/fastly.svg — 200 — 2.6 KiB — 134 ms — http/1.1https://www.gnome.org/img/sponsors/cdn.svgwww.gnome.org/img/sponsors/cdn.svg https://www.gnome.org/img/sponsors/cdn.svg — 200 — 1.9 KiB — 148 ms — http/1.1https://www.gnome.org/img/sponsors/osl.svgwww.gnome.org/img/sponsors/osl.svg https://www.gnome.org/img/sponsors/osl.svg — 200 — 4.6 KiB — 140 ms — http/1.1https://www.gnome.org/img/sponsors/equinix.svgwww.gnome.org/img/sponsors/equinix.... https://www.gnome.org/img/sponsors/equinix.svg — 200 — 2.5 KiB — 128 ms — http/1.1https://www.gnome.org/img/sponsors/digitalocean.svgwww.gnome.org/img/sponsors/digitalo... https://www.gnome.org/img/sponsors/digitalocean.svg — 200 — 4.4 KiB — 124 ms — http/1.1https://www.gnome.org/img/sponsors/aws.svgwww.gnome.org/img/sponsors/aws.svg https://www.gnome.org/img/sponsors/aws.svg — 200 — 3.9 KiB — 144 ms — http/1.1https://www.gnome.org/img/sponsors/macstadium.svgwww.gnome.org/img/sponsors/macstadi... https://www.gnome.org/img/sponsors/macstadium.svg — 200 — 4.2 KiB — 130 ms — http/1.1https://www.gnome.org/img/3dlid.binwww.gnome.org/img/3dlid.bin https://www.gnome.org/img/3dlid.bin — 200 — 74.5 KiB — 164 ms — http/1.1https://www.gnome.org/img/sponsors/miniorange.svgwww.gnome.org/img/sponsors/minioran... https://www.gnome.org/img/sponsors/miniorange.svg — 200 — 16.2 KiB — 148 ms — http/1.1data:image/webp;base64,UklGRiIAAABXRUJQVlA4IBYAAAAwAQCdASoBAAEADsD+JaQAA3AAAAAAdata:image/webp;base64,UklGRiIAAABX... data:image/webp;base64,UklGRiIAAABXRUJQVlA4IBYAAAAwAQCdASoBAAEADsD+JaQAA3AAAAAA — 200 — 0 B — 0 ms — datahttps://www.gnome.org/img/download.webpwww.gnome.org/img/download.webp https://www.gnome.org/img/download.webp — 200 — 0 B — 2 ms — http/1.1https://www.gnome.org/img/favicon.pngwww.gnome.org/img/favicon.png https://www.gnome.org/img/favicon.png — 200 — 1022 B — 132 ms — http/1.1
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 805ms · 27KB · €9/mo
www.gnome.org
Other
Costly
Execution 465ms
Transfer 27 KB
Monthly Cost €5/mo
Unattributable
Other
Costly
Execution 340ms
Transfer 0 KB
Monthly Cost €4/mo

These scripts may cost more than they're worth

  • www.gnome.org adds 465ms and costs ~€5/month
  • Unattributable adds 340ms and costs ~€4/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

Learn more ▾

Every millisecond of third-party JS competes with your own for main-thread time. If their share is bigger than yours, optimization on your code base barely moves the needle. Audit, defer, or remove third-parties before further frontend optimization. Use Lighthouse's third-party audit to identify the worst offenders.

Source: web.dev

www.gnome.org takes 465ms 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

Unattributable takes 340ms 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

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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