Skip to content
https://kde.org

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
2
REVIEW
3
PASS
10
INFO
2

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

Mobile Desktop
67
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
78
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.
85
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.

2.86 s

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

5.17 s

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

22 ms

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

0.046

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

9.94 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.

37.08 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
17
10 PASS 3 REVIEW 2 FIX
F
Page Weight Budget
Action
18.3 MB transferred, 64 requests
FIX
18.3 MB transferred, 64 requests
Critical::
Page weighs 18.7 MB (18.3 MB transferred)
Warning::
Images are 17.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 17.7 MB
Info::
Fonts are 410 KB — consider subsetting or using system fonts
Subset fonts to include only used characters, or switch to system font stacks.
Got: 410 KB
Info::
64 HTTP requests
Info::
Estimated 3.8 g CO2 per page load
18.3 MB / 2.4 MB budget
18.3 MB transferred
64 requests
3.8 g CO2 per page load
Images 17.7 MiB 97%
Fonts 410.4 KiB 2%
JavaScript 74.7 KiB 0%
CSS 45.9 KiB 0%
HTML 17.7 KiB 0%
Other 15.1 KiB 0%
Other 93 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

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
JS Execution Cost
Action
2168ms total JS execution
FIX
2168ms total JS execution
Warning::
Unattributable: 1116ms CPU time
Warning::
https://kde.org/: 917ms CPU time
Info::
https://kde.org/js/bundle.min.5e0dd03e1815922423a4...: 81ms CPU time
Info::
https://kde.org/js/swiper-bundle.min.js: 54ms CPU time
Warning::
Third-party scripts: 1116ms (51% of total)

Main Thread Breakdown

Other 51% Style & Layout 20% Script Evaluation 13% Rendering 12%
ScriptTotalScriptingParse/CompileParty
Unattributable1116ms94ms0ms3rd
https://kde.org/917ms103ms2ms1st
https://kde.org/js/bundle.min.5e0dd03e1815922423a429c2876e5279246e82987a36fc84d5699875bc2aca00.js81ms60ms6ms1st
https://kde.org/js/swiper-bundle.min.js54ms4ms19ms1st
C
Image Optimization
Action
51 images, 0 KB saveable
REVIEW
51 images, 0 KB saveable
Warning::
https://cdn.kde.org/screenshots/marknote/marknote.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kde.org/content/hardware/kfocus.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kde.org/announcements/plasma/6/6.6.0/fulls... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kde.org/content/hardware/slimbook_800.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kde.org/anniversaries/30/30Konqi_1500.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.kde.org/screenshots/kmail/kmail.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kde.org/content/hardware/steam-deck-small.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://stats.kde.org/matomo.php?idsite=1&rec=1 is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://cdn.kde.org/screenshots/kdevelop/kdevelop.... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://kde.org/content/hardware/tuxedo_800.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
51 images 17.7 MB
0 oversized -0 KB
45 legacy format
11 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

Performance issues directly impact user engagement and conversion rates.

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

C
Page Weight Inventory
Action
64 resources · 18.3 MB · 22 KB savings available
REVIEW
64 resources · 18.3 MB · 22 KB savings available
Warning::
Page weight 17.3 MB over 1MB target
Got: 18.3 MB Expected: ≤ 1 MB
Info::
15 third-party resources (9% of weight)
Info::
24 resources over 200KB
64 resources · 18.3 MiB · 15 third-party 17.3 MiB over 1MB target
Image 97% · 17.7 MiB
Font 2% · 410.4 KiB
JavaScript 0% · 74.7 KiB
CSS 0% · 45.9 KiB
Document 0% · 17.7 KiB
Other 0% · 93 B

~22.4 KiB of savings available

Remove unused JavaScript: 22.4 KiB
B
HTTP Caching
max-age=0
REVIEW
max-age=0
Info::
Cache-Control header is set
Got: max-age=0
Info::
Last-Modified header present
Cache-Control

max-age=0

DirectiveValueMeaning
max-age0Cache for 0 seconds
A+
Third-Party Impact
9% third-party, 0 ms blocking
PASS
9% third-party, 0 ms blocking
Info::
Third-party code accounts for 9% of page weight (1.7 MiB of 18.3 MiB)
Info::
Third-party blocking time is low (0 ms)
91%
First-party Third-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 (410 KB)
PASS
4 fonts (410 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

410 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 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.9 s LCP 5.2 shttps://kde.org/fonts/InterVariable.woff2InterVariable.woff2 https://kde.org/fonts/InterVariable.woff2 — 344.2 KiB — 846 ms — font-display: swaphttps://kde.org/fonts/glyph/glyph.ttf?5ea9rbglyph.ttf https://kde.org/fonts/glyph/glyph.ttf?5ea9rb — 8.2 KiB — 835 ms — font-display: swapdata:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA…font-woff;charset=utf-8... data:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA… — 1.6 KiB — 57 ms — font-display: swaphttps://kde.org/fonts/Bebas_Neue/BebasNeue-Regular.ttfBebasNeue-Regular.ttf https://kde.org/fonts/Bebas_Neue/BebasNeue-Regular.ttf — 56.4 KiB — 952 ms — font-display: swap
InterVariable.woff2 woff2 swap
Size 344 KB
Load time 846 ms
Start 863 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
glyph.ttf ttf swap
Size 8 KB
Load time 835 ms
Start 863 ms
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
font-woff;charset=utf-8... woff swap
Size 2 KB
Load time 57 ms
Start 1.7 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
BebasNeue-Regular.ttf ttf swap
Size 56 KB
Load time 952 ms
Start 1.8 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
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 ~192 KB and ~384 ms

A+
JS Bundles
3 scripts, 22 KB unused
PASS
3 scripts, 22 KB unused
Warning::
https://kde.org/js/swiper-bundle.min.js: 22 KB unused (60%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 22 KB
22 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://kde.org/js/swiper-bundle.min.js37 KB22 KB (60%)✓1st
https://kde.org/js/bundle.min.5e0dd03e1815922423a429c2876e5279246e82987a36fc84d5699875bc2aca00.js16 KB—✓1st
https://stats.kde.org/matomo.js22 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

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
2 hints, 0 missing preconnects
PASS
2 hints, 0 missing preconnects
Info::
Page uses 2 resource hint(s)

Current Resource Hints

preconnect
—
preload
2
dns-prefetch
—
prefetch
—

2 resource hints configured

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: Hetzner Online GmbH

Network Waterfall
64 requests over 4910ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.9 s LCP 5.2 shttps://kde.org// https://kde.org/ — 200 — 17.7 KiB — 846 ms — h2https://kde.org/scss/bootstrap.9501887618154b4858a2493cfb915a1b6d7b5b0c0c06e130373deb5aac78aa87.css/scss/bootstrap.9501887618154b4858a... https://kde.org/scss/bootstrap.9501887618154b4858a2493cfb915a1b6d7b5b0c0c06e130373deb5aac78aa87.css — 200 — 39.0 KiB — 854 ms — h2https://kde.org/fonts/InterVariable.woff2/fonts/InterVariable.woff2 https://kde.org/fonts/InterVariable.woff2 — 200 — 344.2 KiB — 846 ms — h2https://kde.org/fonts/glyph/glyph.ttf?5ea9rb/fonts/glyph/glyph.ttf?5ea9rb https://kde.org/fonts/glyph/glyph.ttf?5ea9rb — 200 — 8.2 KiB — 835 ms — h2https://kde.org/scss/index.min.89953f6f40218be19eac4ddc0ec8e67a39cb0da084deb7a6df457eed5ab540a0.css/scss/index.min.89953f6f40218be19ea... https://kde.org/scss/index.min.89953f6f40218be19eac4ddc0ec8e67a39cb0da084deb7a6df457eed5ab540a0.css — 200 — 2.5 KiB — 849 ms — h2https://kde.org/css/swiper-bundle.min.css/css/swiper-bundle.min.css https://kde.org/css/swiper-bundle.min.css — 200 — 4.4 KiB — 849 ms — h2https://kde.org/aether/languages.png/aether/languages.png https://kde.org/aether/languages.png — 200 — 881 B — 838 ms — h2https://kde.org/anniversaries/30/30Konqi_1500.png/anniversaries/30/30Konqi_1500.png https://kde.org/anniversaries/30/30Konqi_1500.png — 200 — 295.6 KiB — 1.0 s — h2https://kde.org/reusable-assets/laptop.svg/reusable-assets/laptop.svg https://kde.org/reusable-assets/laptop.svg — 200 — 66.3 KiB — 1.0 s — h2https://kde.org/announcements/plasma/6/6.6.0/fullscreen_with_apps.png/announcements/plasma/6/6.6.0/fulls... https://kde.org/announcements/plasma/6/6.6.0/fullscreen_with_apps.png — 200 — 778.4 KiB — 1.3 s — h2https://kde.org/content/hardware/steam-deck-small.png/content/hardware/steam-deck-small.... https://kde.org/content/hardware/steam-deck-small.png — 200 — 181.0 KiB — 1.3 s — h2https://kde.org/js/swiper-bundle.min.js/js/swiper-bundle.min.js https://kde.org/js/swiper-bundle.min.js — 200 — 37.1 KiB — 1.3 s — h2https://apps.kde.org/app-icons/org.kde.marknote.svgapps.kde.org/app-icons/org.kde.mark... https://apps.kde.org/app-icons/org.kde.marknote.svg — 200 — 4.2 KiB — 2.2 s — h2https://apps.kde.org/app-icons/org.kde.kontact.svgapps.kde.org/app-icons/org.kde.kont... https://apps.kde.org/app-icons/org.kde.kontact.svg — 200 — 4.8 KiB — 2.2 s — h2https://apps.kde.org/app-icons/org.kde.kdevelop.svgapps.kde.org/app-icons/org.kde.kdev... https://apps.kde.org/app-icons/org.kde.kdevelop.svg — 200 — 5.4 KiB — 2.2 s — h2https://kde.org/content/hardware/tuxedo_800.png/content/hardware/tuxedo_800.png https://kde.org/content/hardware/tuxedo_800.png — 200 — 341.7 KiB — 1.7 s — h2https://kde.org/content/hardware/slimbook_800.png/content/hardware/slimbook_800.png https://kde.org/content/hardware/slimbook_800.png — 200 — 352.5 KiB — 1.7 s — h2https://kde.org/content/hardware/kfocus.png/content/hardware/kfocus.png https://kde.org/content/hardware/kfocus.png — 200 — 231.8 KiB — 1.7 s — h2https://kde.org/content/people/2025/kdenlive_sprint.jpg/content/people/2025/kdenlive_sprin... https://kde.org/content/people/2025/kdenlive_sprint.jpg — 200 — 688.5 KiB — 2.3 s — h2https://kde.org/content/people/2025/fosdem2025.jpg/content/people/2025/fosdem2025.jpg https://kde.org/content/people/2025/fosdem2025.jpg — 200 — 235.0 KiB — 2.3 s — h2https://kde.org/content/people/2025/conf.kde.in.jpg/content/people/2025/conf.kde.in.jp... https://kde.org/content/people/2025/conf.kde.in.jpg — 200 — 1.1 MiB — 2.7 s — h2https://kde.org/content/people/2025/scale.jpg/content/people/2025/scale.jpg https://kde.org/content/people/2025/scale.jpg — 200 — 2.1 MiB — 1.9 s — h2https://kde.org/content/people/2025/fossasia.jpg/content/people/2025/fossasia.jpg https://kde.org/content/people/2025/fossasia.jpg — 200 — 284.1 KiB — 1.7 s — h2https://kde.org/content/people/2025/indiafoss.jpg/content/people/2025/indiafoss.jpg https://kde.org/content/people/2025/indiafoss.jpg — 200 — 220.7 KiB — 2.7 s — h2https://kde.org/content/people/2025/las.jpg/content/people/2025/las.jpg https://kde.org/content/people/2025/las.jpg — 200 — 152.2 KiB — 1.9 s — h2https://kde.org/content/people/2025/akademy-es.jpg/content/people/2025/akademy-es.jpg https://kde.org/content/people/2025/akademy-es.jpg — 200 — 156.5 KiB — 1.9 s — h2https://kde.org/content/people/2025/GroupPhotoAkademy2025-25.jpg/content/people/2025/GroupPhotoAkad... https://kde.org/content/people/2025/GroupPhotoAkademy2025-25.jpg — 200 — 2.1 MiB — 2.2 s — h2https://stats.kde.org/matomo.php?idsite=1&rec=1stats.kde.org/matomo.php?idsite=1&r... https://stats.kde.org/matomo.php?idsite=1&rec=1 — 200 — 319 B — 707 ms — h2https://kde.org/js/bundle.min.5e0dd03e1815922423a429c2876e5279246e82987a36fc84d5699875bc2aca00.js/js/bundle.min.5e0dd03e1815922423a4... https://kde.org/js/bundle.min.5e0dd03e1815922423a429c2876e5279246e82987a36fc84d5699875bc2aca00.js — 200 — 15.9 KiB — 2.2 s — h2data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='…www.w3.org/2000/svg' viewBox='0 0 3... data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='… — 200 — 0 B — 0 ms — data
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.9 s LCP 5.2 shttps://kde.org// https://kde.org/ — 200 — 17.7 KiB — 846 ms — h2https://kde.org/scss/bootstrap.9501887618154b4858a2493cfb915a1b6d7b5b0c0c06e130373deb5aac78aa87.css/scss/bootstrap.9501887618154b4858a... https://kde.org/scss/bootstrap.9501887618154b4858a2493cfb915a1b6d7b5b0c0c06e130373deb5aac78aa87.css — 200 — 39.0 KiB — 854 ms — h2https://kde.org/fonts/InterVariable.woff2/fonts/InterVariable.woff2 https://kde.org/fonts/InterVariable.woff2 — 200 — 344.2 KiB — 846 ms — h2https://kde.org/fonts/glyph/glyph.ttf?5ea9rb/fonts/glyph/glyph.ttf?5ea9rb https://kde.org/fonts/glyph/glyph.ttf?5ea9rb — 200 — 8.2 KiB — 835 ms — h2https://kde.org/scss/index.min.89953f6f40218be19eac4ddc0ec8e67a39cb0da084deb7a6df457eed5ab540a0.css/scss/index.min.89953f6f40218be19ea... https://kde.org/scss/index.min.89953f6f40218be19eac4ddc0ec8e67a39cb0da084deb7a6df457eed5ab540a0.css — 200 — 2.5 KiB — 849 ms — h2https://kde.org/css/swiper-bundle.min.css/css/swiper-bundle.min.css https://kde.org/css/swiper-bundle.min.css — 200 — 4.4 KiB — 849 ms — h2https://kde.org/aether/languages.png/aether/languages.png https://kde.org/aether/languages.png — 200 — 881 B — 838 ms — h2https://kde.org/anniversaries/30/30Konqi_1500.png/anniversaries/30/30Konqi_1500.png https://kde.org/anniversaries/30/30Konqi_1500.png — 200 — 295.6 KiB — 1.0 s — h2https://kde.org/reusable-assets/laptop.svg/reusable-assets/laptop.svg https://kde.org/reusable-assets/laptop.svg — 200 — 66.3 KiB — 1.0 s — h2https://kde.org/announcements/plasma/6/6.6.0/fullscreen_with_apps.png/announcements/plasma/6/6.6.0/fulls... https://kde.org/announcements/plasma/6/6.6.0/fullscreen_with_apps.png — 200 — 778.4 KiB — 1.3 s — h2https://kde.org/content/hardware/steam-deck-small.png/content/hardware/steam-deck-small.... https://kde.org/content/hardware/steam-deck-small.png — 200 — 181.0 KiB — 1.3 s — h2https://kde.org/js/swiper-bundle.min.js/js/swiper-bundle.min.js https://kde.org/js/swiper-bundle.min.js — 200 — 37.1 KiB — 1.3 s — h2https://apps.kde.org/app-icons/org.kde.marknote.svgapps.kde.org/app-icons/org.kde.mark... https://apps.kde.org/app-icons/org.kde.marknote.svg — 200 — 4.2 KiB — 2.2 s — h2https://apps.kde.org/app-icons/org.kde.kontact.svgapps.kde.org/app-icons/org.kde.kont... https://apps.kde.org/app-icons/org.kde.kontact.svg — 200 — 4.8 KiB — 2.2 s — h2https://apps.kde.org/app-icons/org.kde.kdevelop.svgapps.kde.org/app-icons/org.kde.kdev... https://apps.kde.org/app-icons/org.kde.kdevelop.svg — 200 — 5.4 KiB — 2.2 s — h2https://kde.org/content/hardware/tuxedo_800.png/content/hardware/tuxedo_800.png https://kde.org/content/hardware/tuxedo_800.png — 200 — 341.7 KiB — 1.7 s — h2https://kde.org/content/hardware/slimbook_800.png/content/hardware/slimbook_800.png https://kde.org/content/hardware/slimbook_800.png — 200 — 352.5 KiB — 1.7 s — h2https://kde.org/content/hardware/kfocus.png/content/hardware/kfocus.png https://kde.org/content/hardware/kfocus.png — 200 — 231.8 KiB — 1.7 s — h2https://kde.org/content/people/2025/kdenlive_sprint.jpg/content/people/2025/kdenlive_sprin... https://kde.org/content/people/2025/kdenlive_sprint.jpg — 200 — 688.5 KiB — 2.3 s — h2https://kde.org/content/people/2025/fosdem2025.jpg/content/people/2025/fosdem2025.jpg https://kde.org/content/people/2025/fosdem2025.jpg — 200 — 235.0 KiB — 2.3 s — h2https://kde.org/content/people/2025/conf.kde.in.jpg/content/people/2025/conf.kde.in.jp... https://kde.org/content/people/2025/conf.kde.in.jpg — 200 — 1.1 MiB — 2.7 s — h2https://kde.org/content/people/2025/scale.jpg/content/people/2025/scale.jpg https://kde.org/content/people/2025/scale.jpg — 200 — 2.1 MiB — 1.9 s — h2https://kde.org/content/people/2025/fossasia.jpg/content/people/2025/fossasia.jpg https://kde.org/content/people/2025/fossasia.jpg — 200 — 284.1 KiB — 1.7 s — h2https://kde.org/content/people/2025/indiafoss.jpg/content/people/2025/indiafoss.jpg https://kde.org/content/people/2025/indiafoss.jpg — 200 — 220.7 KiB — 2.7 s — h2https://kde.org/content/people/2025/las.jpg/content/people/2025/las.jpg https://kde.org/content/people/2025/las.jpg — 200 — 152.2 KiB — 1.9 s — h2https://kde.org/content/people/2025/akademy-es.jpg/content/people/2025/akademy-es.jpg https://kde.org/content/people/2025/akademy-es.jpg — 200 — 156.5 KiB — 1.9 s — h2https://kde.org/content/people/2025/GroupPhotoAkademy2025-25.jpg/content/people/2025/GroupPhotoAkad... https://kde.org/content/people/2025/GroupPhotoAkademy2025-25.jpg — 200 — 2.1 MiB — 2.2 s — h2https://stats.kde.org/matomo.php?idsite=1&rec=1stats.kde.org/matomo.php?idsite=1&r... https://stats.kde.org/matomo.php?idsite=1&rec=1 — 200 — 319 B — 707 ms — h2https://kde.org/js/bundle.min.5e0dd03e1815922423a429c2876e5279246e82987a36fc84d5699875bc2aca00.js/js/bundle.min.5e0dd03e1815922423a4... https://kde.org/js/bundle.min.5e0dd03e1815922423a429c2876e5279246e82987a36fc84d5699875bc2aca00.js — 200 — 15.9 KiB — 2.2 s — h2data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='…www.w3.org/2000/svg' viewBox='0 0 3... data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='… — 200 — 0 B — 0 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAAAFCAYAAACzSkmrAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAAAFCAYAAACzSkmrAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzA… — 200 — 0 B — 0 ms — datahttps://kde.org/for/digital/applications.svg/for/digital/applications.svg https://kde.org/for/digital/applications.svg — 200 — 920.1 KiB — 1.9 s — h2https://kde.org/for/resources/sonny.webp/for/resources/sonny.webp https://kde.org/for/resources/sonny.webp — 200 — 36.2 KiB — 1.9 s — h2https://kde.org/for/resources/nasa-mars-mission.jpg/for/resources/nasa-mars-mission.jp... https://kde.org/for/resources/nasa-mars-mission.jpg — 200 — 624.1 KiB — 1.9 s — h2https://kde.org/for/activists/pexels-vincent-ma-janssen-2561628.jpg/for/activists/pexels-vincent-ma-ja... https://kde.org/for/activists/pexels-vincent-ma-janssen-2561628.jpg — 200 — 810.6 KiB — 2.1 s — h2https://kde.org/content/develop/devapps-light.png/content/develop/devapps-light.png https://kde.org/content/develop/devapps-light.png — 200 — 984.7 KiB — 2.3 s — h2https://kde.org/content/hardware/steam-deck-large.png/content/hardware/steam-deck-large.... https://kde.org/content/hardware/steam-deck-large.png — 200 — 921.4 KiB — 2.5 s — h2https://cdn.kde.org/screenshots/gcompris/gcompris.pngcdn.kde.org/screenshots/gcompris/gc... https://cdn.kde.org/screenshots/gcompris/gcompris.png — 200 — 583.1 KiB — 161 ms — h2https://kde.org/for/students/background.png/for/students/background.png https://kde.org/for/students/background.png — 200 — 1.6 MiB — 2.8 s — h2https://kde.org/for/travelers/background.webp/for/travelers/background.webp https://kde.org/for/travelers/background.webp — 200 — 295.0 KiB — 2.9 s — h2https://kde.org/for/w10-exiles/exile01_1080p.jpg/for/w10-exiles/exile01_1080p.jpg https://kde.org/for/w10-exiles/exile01_1080p.jpg — 200 — 429.8 KiB — 2.9 s — h2data:image/svg+xml;utf8,<svg width='100' height='70' xmlns='http://www.w3.org/2000/svg' version='1.…www.w3.org/2000/svg' version='1.… data:image/svg+xml;utf8,<svg width='100' height='70' xmlns='http://www.w3.org/2000/svg' version='1.… — 200 — 0 B — 0 ms — datadata:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAAAFCAYAAACzSkmrAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAAAFCAYAAACzSkmrAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzA… — 200 — 0 B — 0 ms — datahttps://kde.org/images/logos/canonical.svg/images/logos/canonical.svg https://kde.org/images/logos/canonical.svg — 200 — 7.5 KiB — 2.9 s — h2https://kde.org/images/logos/google.svg/images/logos/google.svg https://kde.org/images/logos/google.svg — 200 — 1.7 KiB — 2.9 s — h2https://kde.org/images/logos/suse.svg/images/logos/suse.svg https://kde.org/images/logos/suse.svg — 200 — 7.4 KiB — 2.9 s — h2https://kde.org/images/logos/QtGroup.png/images/logos/QtGroup.png https://kde.org/images/logos/QtGroup.png — 200 — 73.6 KiB — 2.9 s — h2https://kde.org/images/logos/blue-systems.png/images/logos/blue-systems.png https://kde.org/images/logos/blue-systems.png — 200 — 1.8 KiB — 2.9 s — h2https://kde.org/images/logos/slimbook.svg/images/logos/slimbook.svg https://kde.org/images/logos/slimbook.svg — 200 — 24.7 KiB — 2.9 s — h2https://kde.org/images/logos/tuxedo.svg/images/logos/tuxedo.svg https://kde.org/images/logos/tuxedo.svg — 200 — 18.3 KiB — 2.9 s — h2https://kde.org/images/logos/kfocus.png/images/logos/kfocus.png https://kde.org/images/logos/kfocus.png — 200 — 55.8 KiB — 2.5 s — h2https://kde.org/images/logos/gnupg.svg/images/logos/gnupg.svg https://kde.org/images/logos/gnupg.svg — 200 — 31.7 KiB — 2.5 s — h2https://kde.org/images/logos/mbition.svg/images/logos/mbition.svg https://kde.org/images/logos/mbition.svg — 200 — 7.0 KiB — 2.5 s — h2https://kde.org/images/logos/techpaladin.png/images/logos/techpaladin.png https://kde.org/images/logos/techpaladin.png — 200 — 59.9 KiB — 2.5 s — h2https://kde.org/images/logos/rockylinux.svg/images/logos/rockylinux.svg https://kde.org/images/logos/rockylinux.svg — 200 — 5.5 KiB — 2.5 s — h2https://kde.org/images/logos/framework.svg/images/logos/framework.svg https://kde.org/images/logos/framework.svg — 200 — 2.9 KiB — 2.5 s — h2data:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA…data:application/font-woff;charset=... data:application/font-woff;charset=utf-8;base64, d09GRgABAAAAAAZgABAAAAAADAAAAAAAAAAAAAAAAAAAAAAAAA… — 200 — 1.6 KiB — 57 ms — datahttps://kde.org/fonts/Bebas_Neue/BebasNeue-Regular.ttf/fonts/Bebas_Neue/BebasNeue-Regular... https://kde.org/fonts/Bebas_Neue/BebasNeue-Regular.ttf — 200 — 56.4 KiB — 952 ms — h2https://cdn.kde.org/screenshots/marknote/marknote.pngcdn.kde.org/screenshots/marknote/ma... https://cdn.kde.org/screenshots/marknote/marknote.png — 200 — 721.9 KiB — 67 ms — h2https://cdn.kde.org/screenshots/kmail/kmail.pngcdn.kde.org/screenshots/kmail/kmail... https://cdn.kde.org/screenshots/kmail/kmail.png — 200 — 191.1 KiB — 72 ms — h2https://cdn.kde.org/screenshots/kdevelop/kdevelop.pngcdn.kde.org/screenshots/kdevelop/kd... https://cdn.kde.org/screenshots/kdevelop/kdevelop.png — 200 — 229.1 KiB — 83 ms — h2https://stats.kde.org/matomo.jsstats.kde.org/matomo.js https://stats.kde.org/matomo.js — 200 — 21.7 KiB — 423 ms — h2https://stats.kde.org/matomo.php?action_name=Home%20-%20KDE%20Community&idsite=1&rec=1&r=760485&h=19&m=11&s=13&url=https%3A%2F%2Fkde.org%2F&_id=&_idn=1&send_image=0&_refts=0&pv_id=hzPrkW&pf_net=429&pf_srv=414&pf_tfr=3&pf_dm1=1302&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Not-A.Brand%22%2C%22version%22%3A%2224.0.0.0%22%7D%2C%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22146.0.7680.164%22%7D%5D%2C%22mobile%22%3Atrue%2C%22model%22%3A%22moto%20g%20power%20(2022)%22%2C%22platform%22%3A%22Android%22%2C%22platformVersion%22%3A%2211.0%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=412x823stats.kde.org/matomo.php?action_nam... https://stats.kde.org/matomo.php?action_name=Home%20-%20KDE%20Community&idsite=1&rec=1&r=760485&h=19&m=11&s=13&url=https%3A%2F%2Fkde.org%2F&_id=&_idn=1&send_image=0&_refts=0&pv_id=hzPrkW&pf_net=429&pf_srv=414&pf_tfr=3&pf_dm1=1302&uadata=%7B%22formFactors%22%3A%5B%22Desktop%22%5D%2C%22fullVersionList%22%3A%5B%7B%22brand%22%3A%22Not-A.Brand%22%2C%22version%22%3A%2224.0.0.0%22%7D%2C%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22146.0.7680.164%22%7D%5D%2C%22mobile%22%3Atrue%2C%22model%22%3A%22moto%20g%20power%20(2022)%22%2C%22platform%22%3A%22Android%22%2C%22platformVersion%22%3A%2211.0%22%7D&pdf=1&qt=0&realp=0&wma=0&fla=0&java=0&ag=0&cookie=1&res=412x823 — 204 — 93 B — 266 ms — h2https://kde.org/favicon.ico/favicon.ico https://kde.org/favicon.ico — 200 — 15.1 KiB — 211 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
51% of JavaScript execution is third-party
First-party Third-party 1116ms · 0KB · €3/mo
Unattributable
Other
Costly
Execution 1116ms
Transfer 0 KB
Monthly Cost €3/mo

These scripts may cost more than they're worth

  • Unattributable adds 1116ms and costs ~€3/month

51% of JavaScript execution time comes from third-party scripts.

Why this matters

Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.

Learn more ▾

Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.

Source: web.dev / HTTP Archive Web Almanac

Unattributable takes 1116ms 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.

Send Feedback