Skip to content
https://kde.org

Performance

· 15 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
81
GRADE
B
FIX
1
REVIEW
3
PASS
9
INFO
2

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

Mobile Desktop
70
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
79
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.

2.05 s

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

2.66 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.

0.005

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

3.35 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.

2.67 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
9 PASS 3 REVIEW 1 FIX
F
Page Weight Budget
Action
18.3 MB transferred, 63 requests
FIX
18.3 MB transferred, 63 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::
63 HTTP requests
Info::
Estimated 3.8 g CO2 per page load
18.3 MB / 2.4 MB budget
18.3 MB transferred
63 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

C
Image Optimization
Action
50 images, 0 KB saveable
REVIEW
50 images, 0 KB saveable
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://cdn.kde.org/screenshots/marknote/marknote.... 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://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://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://kde.org/aether/languages.png 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://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/anniversaries/30/30Konqi_1500.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/tuxedo_800.png 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.
50 images 17.7 MB
0 oversized -0 KB
45 legacy format
12 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

Performance issues directly impact user engagement and conversion rates.

C
Page Weight Inventory
Action
63 resources · 18.3 MB · 22 KB savings available
REVIEW
63 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::
14 third-party resources (9% of weight)
Info::
24 resources over 200KB
63 resources · 18.3 MiB · 14 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+
JS Execution Cost
498ms total JS execution
PASS
498ms total JS execution
Warning::
Unattributable: 280ms CPU time
Info::
https://kde.org/: 217ms CPU time
Warning::
Third-party scripts: 280ms (56% of total)

Main Thread Breakdown

Other 50% Style & Layout 22% Script Evaluation 14% Rendering 10%
ScriptTotalScriptingParse/CompileParty
Unattributable280ms28ms0ms3rd
https://kde.org/217ms25ms1ms1st
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 500 ms 1.0 s 1.5 s 2.0 s 2.5 s FCP 2.0 s LCP 2.7 shttps://kde.org/fonts/InterVariable.woff2InterVariable.woff2 https://kde.org/fonts/InterVariable.woff2 — 344.2 KiB — 833 ms — font-display: swaphttps://kde.org/fonts/glyph/glyph.ttf?5ea9rbglyph.ttf https://kde.org/fonts/glyph/glyph.ttf?5ea9rb — 8.2 KiB — 845 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 — 60 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 — 815 ms — font-display: swap
InterVariable.woff2 woff2 swap
Size 344 KB
Load time 833 ms
Start 850 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 845 ms
Start 851 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 60 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 815 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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
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
63 requests over 4978ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.0 s LCP 2.7 shttps://kde.org// https://kde.org/ — 200 — 17.7 KiB — 840 ms — h2https://kde.org/scss/bootstrap.9501887618154b4858a2493cfb915a1b6d7b5b0c0c06e130373deb5aac78aa87.css/scss/bootstrap.9501887618154b4858a... https://kde.org/scss/bootstrap.9501887618154b4858a2493cfb915a1b6d7b5b0c0c06e130373deb5aac78aa87.css — 200 — 39.0 KiB — 849 ms — h2https://kde.org/fonts/InterVariable.woff2/fonts/InterVariable.woff2 https://kde.org/fonts/InterVariable.woff2 — 200 — 344.2 KiB — 833 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 — 845 ms — h2https://kde.org/scss/index.min.89953f6f40218be19eac4ddc0ec8e67a39cb0da084deb7a6df457eed5ab540a0.css/scss/index.min.89953f6f40218be19ea... https://kde.org/scss/index.min.89953f6f40218be19eac4ddc0ec8e67a39cb0da084deb7a6df457eed5ab540a0.css — 200 — 2.6 KiB — 844 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 — 844 ms — h2https://kde.org/aether/languages.png/aether/languages.png https://kde.org/aether/languages.png — 200 — 838 B — 845 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 — 66.4 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 — 778.5 KiB — 1.2 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 — 2.5 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 — 2.0 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 — 2.0 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 — 1.5 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 — 1.7 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 — 1.7 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 — 2.1 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 — 2.4 s — h2https://kde.org/content/people/2025/fossasia.jpg/content/people/2025/fossasia.jpg https://kde.org/content/people/2025/fossasia.jpg — 200 — 284.0 KiB — 2.4 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 — 2.5 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 — 2.5 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 — 2.5 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 — 2.0 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 — 669 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 — 2.1 s — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAAAFCAYAAACzSkmrAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAAAFCAYAAACzSkmrAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzA… — 200 — 0 B — 0 ms — data
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.0 s LCP 2.7 shttps://kde.org// https://kde.org/ — 200 — 17.7 KiB — 840 ms — h2https://kde.org/scss/bootstrap.9501887618154b4858a2493cfb915a1b6d7b5b0c0c06e130373deb5aac78aa87.css/scss/bootstrap.9501887618154b4858a... https://kde.org/scss/bootstrap.9501887618154b4858a2493cfb915a1b6d7b5b0c0c06e130373deb5aac78aa87.css — 200 — 39.0 KiB — 849 ms — h2https://kde.org/fonts/InterVariable.woff2/fonts/InterVariable.woff2 https://kde.org/fonts/InterVariable.woff2 — 200 — 344.2 KiB — 833 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 — 845 ms — h2https://kde.org/scss/index.min.89953f6f40218be19eac4ddc0ec8e67a39cb0da084deb7a6df457eed5ab540a0.css/scss/index.min.89953f6f40218be19ea... https://kde.org/scss/index.min.89953f6f40218be19eac4ddc0ec8e67a39cb0da084deb7a6df457eed5ab540a0.css — 200 — 2.6 KiB — 844 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 — 844 ms — h2https://kde.org/aether/languages.png/aether/languages.png https://kde.org/aether/languages.png — 200 — 838 B — 845 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 — 66.4 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 — 778.5 KiB — 1.2 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 — 2.5 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 — 2.0 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 — 2.0 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 — 1.5 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 — 1.7 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 — 1.7 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 — 2.1 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 — 2.4 s — h2https://kde.org/content/people/2025/fossasia.jpg/content/people/2025/fossasia.jpg https://kde.org/content/people/2025/fossasia.jpg — 200 — 284.0 KiB — 2.4 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 — 2.5 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 — 2.5 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 — 2.5 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 — 2.0 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 — 669 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 — 2.1 s — h2data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAAAFCAYAAACzSkmrAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzA…data:image/png;base64,iVBORw0KGgoAA... data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAAAFCAYAAACzSkmrAAAABHNCSVQICAgIfAhkiAAAAAlwSFlzA… — 200 — 0 B — 0 ms — datadata: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 — datadata: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 — 60 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 — 815 ms — h2https://stats.kde.org/matomo.jsstats.kde.org/matomo.js https://stats.kde.org/matomo.js — 200 — 21.7 KiB — 430 ms — h2https://kde.org/for/digital/applications.svg/for/digital/applications.svg https://kde.org/for/digital/applications.svg — 200 — 920.1 KiB — 509 ms — h2https://kde.org/for/resources/sonny.webp/for/resources/sonny.webp https://kde.org/for/resources/sonny.webp — 200 — 36.2 KiB — 516 ms — 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 — 528 ms — 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 — 540 ms — 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 — 711 ms — 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 — 859 ms — 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 — 118 ms — h2https://kde.org/for/students/background.png/for/students/background.png https://kde.org/for/students/background.png — 200 — 1.6 MiB — 1.1 s — h2https://kde.org/for/travelers/background.webp/for/travelers/background.webp https://kde.org/for/travelers/background.webp — 200 — 295.0 KiB — 1.3 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 — 1.3 s — h2https://kde.org/images/logos/canonical.svg/images/logos/canonical.svg https://kde.org/images/logos/canonical.svg — 200 — 7.5 KiB — 1.3 s — h2https://kde.org/images/logos/google.svg/images/logos/google.svg https://kde.org/images/logos/google.svg — 200 — 1.7 KiB — 1.5 s — h2https://kde.org/images/logos/suse.svg/images/logos/suse.svg https://kde.org/images/logos/suse.svg — 200 — 7.4 KiB — 1.3 s — h2https://kde.org/images/logos/QtGroup.png/images/logos/QtGroup.png https://kde.org/images/logos/QtGroup.png — 200 — 73.6 KiB — 1.3 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 — 1.3 s — h2https://kde.org/images/logos/slimbook.svg/images/logos/slimbook.svg https://kde.org/images/logos/slimbook.svg — 200 — 24.7 KiB — 1.3 s — h2https://kde.org/images/logos/tuxedo.svg/images/logos/tuxedo.svg https://kde.org/images/logos/tuxedo.svg — 200 — 18.3 KiB — 1.3 s — h2https://kde.org/images/logos/kfocus.png/images/logos/kfocus.png https://kde.org/images/logos/kfocus.png — 200 — 55.8 KiB — 1.3 s — h2https://kde.org/images/logos/gnupg.svg/images/logos/gnupg.svg https://kde.org/images/logos/gnupg.svg — 200 — 31.7 KiB — 1.3 s — h2https://kde.org/images/logos/mbition.svg/images/logos/mbition.svg https://kde.org/images/logos/mbition.svg — 200 — 7.0 KiB — 1.5 s — h2https://kde.org/images/logos/techpaladin.png/images/logos/techpaladin.png https://kde.org/images/logos/techpaladin.png — 200 — 59.9 KiB — 1.5 s — h2https://kde.org/images/logos/rockylinux.svg/images/logos/rockylinux.svg https://kde.org/images/logos/rockylinux.svg — 200 — 5.5 KiB — 1.5 s — h2https://kde.org/images/logos/framework.svg/images/logos/framework.svg https://kde.org/images/logos/framework.svg — 200 — 2.9 KiB — 1.5 s — h2https://cdn.kde.org/screenshots/marknote/marknote.pngcdn.kde.org/screenshots/marknote/ma... https://cdn.kde.org/screenshots/marknote/marknote.png — 200 — 721.8 KiB — 97 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 — 47 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 — 38 ms — h2https://stats.kde.org/matomo.php?action_name=Home%20-%20KDE%20Community&idsite=1&rec=1&r=877875&h=19&m=11&s=34&url=https%3A%2F%2Fkde.org%2F&_id=&_idn=1&send_image=0&_refts=0&pv_id=7UpNik&pf_net=426&pf_srv=413&pf_tfr=3&pf_dm1=1288&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%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=800x600stats.kde.org/matomo.php?action_nam... https://stats.kde.org/matomo.php?action_name=Home%20-%20KDE%20Community&idsite=1&rec=1&r=877875&h=19&m=11&s=34&url=https%3A%2F%2Fkde.org%2F&_id=&_idn=1&send_image=0&_refts=0&pv_id=7UpNik&pf_net=426&pf_srv=413&pf_tfr=3&pf_dm1=1288&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%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 — 93 B — 241 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
56% of JavaScript execution is third-party
First-party Third-party 280ms · 0KB · €1/mo
Unattributable
Other
Costly
Execution 280ms
Transfer 0 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Unattributable adds 280ms and costs ~€1/month

56% 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 280ms 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