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https://au.dk

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
71
GRADE
C
FIX
6
REVIEW
2
PASS
7
INFO
2

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

Mobile Desktop
42
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
91
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.
92
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.

6.42 s

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

23.27 s

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

534 ms

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

0.001

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

11.08 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.

24.30 s

Page Load Progression

513 ms
1.0 s
1.5 s
2.1 s
2.6 s
3.1 s
3.6 s
4.1 s
Checks
17
7 PASS 2 REVIEW 6 FIX
F
Page Weight Budget
Action
4.7 MB transferred, 60 requests
FIX
4.7 MB transferred, 60 requests
Critical::
Page weighs 7.6 MB (4.7 MB transferred)
Warning::
Images are 3.7 MB — compress or use modern formats
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Got: 3.7 MB
Warning::
JavaScript is 790 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 790 KB
Info::
60 HTTP requests
Info::
Estimated 0.99 g CO2 per page load
4.7 MB / 2.4 MB budget
4.7 MB transferred
60 requests
0.99 g CO2 per page load
Images 3.7 MiB 78%
JavaScript 789.6 KiB 16%
CSS 104.4 KiB 2%
Fonts 102.4 KiB 2%
HTML 41.0 KiB 1%
Other 31.7 KiB 1%
Other 293 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

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 (4.7 MiB of 4.7 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2950ms total JS execution
FIX
2950ms total JS execution
Warning::
https://cdn.cookie-script.com/s/a8ca7e688df75cd8a6...: 807ms CPU time
Warning::
https://cdn.au.dk/2016/assets/js/vendor.js: 692ms CPU time
Warning::
https://www.au.dk/: 540ms CPU time
Warning::
Unattributable: 493ms CPU time
Info::
https://www.googletagmanager.com/gtm.js?id=GTM-WXR...: 206ms CPU time
Warning::
Third-party scripts: 2950ms (100% of total)

Main Thread Breakdown

Script Evaluation 34% Style & Layout 26% Other 18% Script Parsing & Compilation 12% Parse HTML & CSS 6% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://cdn.cookie-script.com/s/a8ca7e688df75cd8a6a03fcab6d18143.js807ms151ms50ms3rd
https://cdn.au.dk/2016/assets/js/vendor.js692ms580ms65ms3rd
https://www.au.dk/540ms8ms6ms3rd
Unattributable493ms7ms0ms3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WXRLNF206ms144ms47ms3rd
https://cdn.apple-mapkit.com/mk/5.x.x/mapkit.js142ms41ms101ms3rd
https://cdn.au.dk/apps/react/findwidget/6.0.2/app.js70ms51ms19ms3rd
D
JS Bundles
Action
22 scripts, 473 KB unused
FIX
22 scripts, 473 KB unused
Warning::
https://cdn.apple-mapkit.com/mk/5.x.x/mapkit.js: 205 KB unused (89%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.au.dk/2016/assets/js/vendor.js: 94 KB unused (77%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtm.js?id=GTM-WXR...: 68 KB unused (57%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.jsdelivr.net/npm/react-dom@16.13.1/umd...: 31 KB unused (83%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://cdn.au.dk/apps/react/findwidget/6.0.2/app....: 27 KB unused (67%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 473 KB
473 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://cdn.apple-mapkit.com/mk/5.x.x/mapkit.js232 KB205 KB (89%)✓3rd
https://cdn.au.dk/2016/assets/js/vendor.js123 KB94 KB (77%)✓3rd
https://www.googletagmanager.com/gtm.js?id=GTM-WXRLNF120 KB68 KB (57%)✓3rd
https://cdn.jsdelivr.net/npm/react-dom@16.13.1/umd/react-dom.production.min.js38 KB31 KB (83%)✓3rd
https://cdn.au.dk/apps/react/findwidget/6.0.2/app.js41 KB27 KB (67%)✓3rd
https://customer.cludo.com/scripts/bundles/search-script.min.js51 KB26 KB (52%)✓3rd
https://www.au.dk/_assets/948410ace0dfa9ad00627133d9ca8a23/JavaScript/Powermail/Form.min.js?177349393728 KB21 KB (75%)✓3rd
https://www.au.dk/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js1 KB—✓3rd
https://cdn.jsdelivr.net/npm/es6-shim@0.35.5/es6-shim.min.js17 KB—✓3rd
https://www.au.dk/fileadmin/www.au.dk/AU_i_tal/forside-tal/js/locations-da_v2.js?v=22 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

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

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

F
Page Weight Inventory
Action
60 resources · 4.7 MB · 473 KB savings available
FIX
60 resources · 4.7 MB · 473 KB savings available
Warning::
Page weight 3.7 MB over 1MB target
Got: 4.7 MB Expected: ≤ 1 MB
Info::
~473 KB of savings available
Warning::
59 third-party resources (100% of weight)
Info::
9 resources over 200KB
60 resources · 4.7 MiB · 59 third-party 3.7 MiB over 1MB target
Image 78% · 3.7 MiB
JavaScript 16% · 789.6 KiB
CSS 2% · 104.4 KiB
Font 2% · 102.4 KiB
Document 1% · 41.0 KiB
Other 0% · 352 B

~472.7 KiB of savings available

Remove unused JavaScript: 472.7 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.

B
Image Optimization
18 images, 0 KB saveable
REVIEW
18 images, 0 KB saveable
Warning::
https://cdn.au.dk/2016/assets/img/au_segl.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
18 images 3.7 MB
0 oversized -0 KB
18 legacy format
1 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

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
4 fonts (102 KB)
PASS
4 fonts (102 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

102 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 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s FCP 6.4 s LCP 23.3 shttps://fonts.au.dk/fonts/aupassata_rg-webfont.woff2aupassata_rg-webfont.woff2 https://fonts.au.dk/fonts/aupassata_rg-webfont.woff2 — 33.1 KiB — 246 ms — font-display: swaphttps://fonts.au.dk/fonts/au_icons.woffau_icons.woff https://fonts.au.dk/fonts/au_icons.woff — 18.2 KiB — 245 ms — font-display: swaphttps://fonts.au.dk/fonts/aupassata_bold-webfont.woff2aupassata_bold-webfont.... https://fonts.au.dk/fonts/aupassata_bold-webfont.woff2 — 29.8 KiB — 246 ms — font-display: swaphttps://fonts.au.dk/fonts/autohinting/aupassata_bold-webfont.woff2aupassata_bold-webfont.... https://fonts.au.dk/fonts/autohinting/aupassata_bold-webfont.woff2 — 21.3 KiB — 17 ms — font-display: swap
aupassata_rg-webfont.woff2 woff2 swap
Size 33 KB
Load time 246 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
au_icons.woff woff swap
Size 18 KB
Load time 245 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
  • Convert to woff2 for ~30% smaller file size
aupassata_bold-webfont.... woff2 swap
Size 30 KB
Load time 246 ms
Start 2.4 s
Risk FOUT — text flashes from fallback to web font
aupassata_bold-webfont.... woff2 swap
Size 21 KB
Load time 17 ms
Start 3.8 s
Risk FOUT — text flashes from fallback to web font
Optimization checklist
  • Preload critical fonts (priority=high)
  • Use woff2 format for all fonts
  • Set font-display to swap, optional, or fallback
  • Subset large fonts (≤100 KB each)

Fixing the unchecked items could save ~5 KB and ~10 ms

A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
No render-blocking resources detected
A+
Resource Hints
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
A+
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
Network Waterfall
60 requests over 4582ms
INFO
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s FCP 6.4 s LCP 23.3 shttps://au.dk// https://au.dk/ — 302 — 59 B — 876 ms — h2https://www.au.dk/www.au.dk/ https://www.au.dk/ — 200 — 12.1 KiB — 450 ms — h3https://www.au.dk/typo3temp/assets/css/4adea90c81bdd79ac4f5be3b55a7851c.css?1774258798www.au.dk/typo3temp/assets/css/4ade... https://www.au.dk/typo3temp/assets/css/4adea90c81bdd79ac4f5be3b55a7851c.css?1774258798 — 200 — 1.4 KiB — 872 ms — h3https://cdn.au.dk/2016/assets/css/app.csscdn.au.dk/2016/assets/css/app.css https://cdn.au.dk/2016/assets/css/app.css — 200 — 39.7 KiB — 268 ms — h2https://cdn.au.dk/components/umd/all.csscdn.au.dk/components/umd/all.css https://cdn.au.dk/components/umd/all.css — 200 — 5.8 KiB — 259 ms — h2https://www.au.dk/_assets/bba0af3e32dafabe31c0da8e169fa8c4/Css/fluid_styled_content.css?1775815305www.au.dk/_assets/bba0af3e32dafabe3... https://www.au.dk/_assets/bba0af3e32dafabe31c0da8e169fa8c4/Css/fluid_styled_content.css?1775815305 — 200 — 477 B — 933 ms — h3https://www.au.dk/_assets/56b797f8bb08f87b2b0a4b7706a3f2d6/Css/Powermail/CssDemo.css?1775815301www.au.dk/_assets/56b797f8bb08f87b2... https://www.au.dk/_assets/56b797f8bb08f87b2b0a4b7706a3f2d6/Css/Powermail/CssDemo.css?1775815301 — 200 — 410 B — 886 ms — h3https://www.au.dk/_assets/56b797f8bb08f87b2b0a4b7706a3f2d6/Css/powermail-overrides.css?1775815301www.au.dk/_assets/56b797f8bb08f87b2... https://www.au.dk/_assets/56b797f8bb08f87b2b0a4b7706a3f2d6/Css/powermail-overrides.css?1775815301 — 200 — 2.3 KiB — 867 ms — h3https://www.au.dk/_assets/d336a48cc75b0ce72905efb565ce5df1/Css/news-basic.css?1775815305www.au.dk/_assets/d336a48cc75b0ce72... https://www.au.dk/_assets/d336a48cc75b0ce72905efb565ce5df1/Css/news-basic.css?1775815305 — 200 — 3.4 KiB — 889 ms — h3https://customer.cludo.com/css/511/2151/cludo-search.min.csscustomer.cludo.com/css/511/2151/clu... https://customer.cludo.com/css/511/2151/cludo-search.min.css — 200 — 8.5 KiB — 390 ms — h2https://cdn.jsdelivr.net/npm/react@16.13.1/umd/react.production.min.jscdn.jsdelivr.net/npm/react@16.13.1/... https://cdn.jsdelivr.net/npm/react@16.13.1/umd/react.production.min.js — 200 — 5.3 KiB — 33 ms — h2https://cdn.jsdelivr.net/npm/react-dom@16.13.1/umd/react-dom.production.min.jscdn.jsdelivr.net/npm/react-dom@16.1... https://cdn.jsdelivr.net/npm/react-dom@16.13.1/umd/react-dom.production.min.js — 200 — 38.1 KiB — 40 ms — h2https://cdn.jsdelivr.net/npm/axios@0.19.2/dist/axios.min.jscdn.jsdelivr.net/npm/axios@0.19.2/d... https://cdn.jsdelivr.net/npm/axios@0.19.2/dist/axios.min.js — 200 — 5.5 KiB — 26 ms — h2https://cdn.jsdelivr.net/npm/dom4@2.1.5/build/dom4.jscdn.jsdelivr.net/npm/dom4@2.1.5/bui... https://cdn.jsdelivr.net/npm/dom4@2.1.5/build/dom4.js — 200 — 4.4 KiB — 27 ms — h2https://cdn.jsdelivr.net/npm/es6-shim@0.35.5/es6-shim.min.jscdn.jsdelivr.net/npm/es6-shim@0.35.... https://cdn.jsdelivr.net/npm/es6-shim@0.35.5/es6-shim.min.js — 200 — 16.9 KiB — 34 ms — h2https://cdn.au.dk/2016/assets/js/vendor.jscdn.au.dk/2016/assets/js/vendor.js https://cdn.au.dk/2016/assets/js/vendor.js — 200 — 123.2 KiB — 267 ms — h2https://cdn.au.dk/2016/assets/js/app.jscdn.au.dk/2016/assets/js/app.js https://cdn.au.dk/2016/assets/js/app.js — 200 — 15.3 KiB — 260 ms — h2https://cdn.jsdelivr.net/npm/@aarhus-university/au-designsystem-delphinus@latest/public/projects/typo3/js/app.jscdn.jsdelivr.net/npm/@aarhus-univer... https://cdn.jsdelivr.net/npm/@aarhus-university/au-designsystem-delphinus@latest/public/projects/typo3/js/app.js — 200 — 4.0 KiB — 37 ms — h2https://www.au.dk/_assets/d336a48cc75b0ce72905efb565ce5df1/JavaScript/Infobox.js?1775815305www.au.dk/_assets/d336a48cc75b0ce72... https://www.au.dk/_assets/d336a48cc75b0ce72905efb565ce5df1/JavaScript/Infobox.js?1775815305 — 200 — 1.3 KiB — 893 ms — h3https://www.au.dk/fileadmin/www.au.dk/AU_i_tal/forside-tal/js/locations-da_v2.js?v=2www.au.dk/fileadmin/www.au.dk/AU_i_... https://www.au.dk/fileadmin/www.au.dk/AU_i_tal/forside-tal/js/locations-da_v2.js?v=2 — 200 — 1.6 KiB — 907 ms — h3https://cdn.jsdelivr.net/npm/@aarhus-university/au-designsystem-delphinus@latest/public/projects/typo3/style.csscdn.jsdelivr.net/npm/@aarhus-univer... https://cdn.jsdelivr.net/npm/@aarhus-university/au-designsystem-delphinus@latest/public/projects/typo3/style.css — 200 — 39.0 KiB — 38 ms — h2https://cdn.au.dk/2016/assets/img/au_segl.svgcdn.au.dk/2016/assets/img/au_segl.s... https://cdn.au.dk/2016/assets/img/au_segl.svg — 200 — 16.3 KiB — 263 ms — h2https://www.au.dk/fileadmin/www.au.dk/Hero-forside/Forskningens_Dogn_2023_Grafik_1000px_mobil.pngwww.au.dk/fileadmin/www.au.dk/Hero-... https://www.au.dk/fileadmin/www.au.dk/Hero-forside/Forskningens_Dogn_2023_Grafik_1000px_mobil.png — 200 — 69.3 KiB — 895 ms — h3https://cdn.au.dk/apps/react/presentation/5.2.0/presentation.csscdn.au.dk/apps/react/presentation/5... https://cdn.au.dk/apps/react/presentation/5.2.0/presentation.css — 200 — 2.5 KiB — 125 ms — h2https://www.au.dk/fileadmin/gridelements/gymnasieportalen_04.jpgwww.au.dk/fileadmin/gridelements/gy... https://www.au.dk/fileadmin/gridelements/gymnasieportalen_04.jpg — 200 — 131.1 KiB — 894 ms — h3https://www.au.dk/fileadmin/gridelements/netvaerksdag-for-skoleledere_03.jpgwww.au.dk/fileadmin/gridelements/ne... https://www.au.dk/fileadmin/gridelements/netvaerksdag-for-skoleledere_03.jpg — 200 — 149.8 KiB — 890 ms — h3https://www.au.dk/fileadmin/gridelements/Det_rullende_universitet_01.jpgwww.au.dk/fileadmin/gridelements/De... https://www.au.dk/fileadmin/gridelements/Det_rullende_universitet_01.jpg — 200 — 309.2 KiB — 908 ms — h3https://cdn.au.dk/apps/react/some/3.4.0/some.csscdn.au.dk/apps/react/some/3.4.0/som... https://cdn.au.dk/apps/react/some/3.4.0/some.css — 200 — 1.0 KiB — 137 ms — h2https://www.au.dk/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.jswww.au.dk/cdn-cgi/scripts/5c5dd728/... https://www.au.dk/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js — 200 — 726 B — 14 ms — h3https://cdn.au.dk/apps/react/findwidget/6.0.2/app.jscdn.au.dk/apps/react/findwidget/6.0... https://cdn.au.dk/apps/react/findwidget/6.0.2/app.js — 200 — 41.3 KiB — 20 ms — h2
0 ms 2.0 s 4.0 s 6.0 s 8.0 s 10.0 s 12.0 s 14.0 s 16.0 s 18.0 s 20.0 s 22.0 s 24.0 s FCP 6.4 s LCP 23.3 shttps://au.dk// https://au.dk/ — 302 — 59 B — 876 ms — h2https://www.au.dk/www.au.dk/ https://www.au.dk/ — 200 — 12.1 KiB — 450 ms — h3https://www.au.dk/typo3temp/assets/css/4adea90c81bdd79ac4f5be3b55a7851c.css?1774258798www.au.dk/typo3temp/assets/css/4ade... https://www.au.dk/typo3temp/assets/css/4adea90c81bdd79ac4f5be3b55a7851c.css?1774258798 — 200 — 1.4 KiB — 872 ms — h3https://cdn.au.dk/2016/assets/css/app.csscdn.au.dk/2016/assets/css/app.css https://cdn.au.dk/2016/assets/css/app.css — 200 — 39.7 KiB — 268 ms — h2https://cdn.au.dk/components/umd/all.csscdn.au.dk/components/umd/all.css https://cdn.au.dk/components/umd/all.css — 200 — 5.8 KiB — 259 ms — h2https://www.au.dk/_assets/bba0af3e32dafabe31c0da8e169fa8c4/Css/fluid_styled_content.css?1775815305www.au.dk/_assets/bba0af3e32dafabe3... https://www.au.dk/_assets/bba0af3e32dafabe31c0da8e169fa8c4/Css/fluid_styled_content.css?1775815305 — 200 — 477 B — 933 ms — h3https://www.au.dk/_assets/56b797f8bb08f87b2b0a4b7706a3f2d6/Css/Powermail/CssDemo.css?1775815301www.au.dk/_assets/56b797f8bb08f87b2... https://www.au.dk/_assets/56b797f8bb08f87b2b0a4b7706a3f2d6/Css/Powermail/CssDemo.css?1775815301 — 200 — 410 B — 886 ms — h3https://www.au.dk/_assets/56b797f8bb08f87b2b0a4b7706a3f2d6/Css/powermail-overrides.css?1775815301www.au.dk/_assets/56b797f8bb08f87b2... https://www.au.dk/_assets/56b797f8bb08f87b2b0a4b7706a3f2d6/Css/powermail-overrides.css?1775815301 — 200 — 2.3 KiB — 867 ms — h3https://www.au.dk/_assets/d336a48cc75b0ce72905efb565ce5df1/Css/news-basic.css?1775815305www.au.dk/_assets/d336a48cc75b0ce72... https://www.au.dk/_assets/d336a48cc75b0ce72905efb565ce5df1/Css/news-basic.css?1775815305 — 200 — 3.4 KiB — 889 ms — h3https://customer.cludo.com/css/511/2151/cludo-search.min.csscustomer.cludo.com/css/511/2151/clu... 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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 2950ms · 585KB · kr241/mo
Cookie Script
Consent
Essential
Execution 807ms
Transfer 57 KB
Monthly Cost kr66/mo
cdn.au.dk
Other
Costly
Execution 692ms
Transfer 123 KB
Unused 77%
Monthly Cost kr57/mo
www.au.dk
Other
Costly
Execution 540ms
Transfer 12 KB
Monthly Cost kr44/mo
Unattributable
Other
Costly
Execution 493ms
Transfer 0 KB
Monthly Cost kr40/mo
Google Tag Manager
Tag Manager
Costly
Execution 206ms
Transfer 120 KB
Unused 57%
Monthly Cost kr17/mo
cdn.apple-mapkit.com
Other
Optional
Execution 142ms
Transfer 232 KB
Unused 89%
Monthly Cost kr12/mo
cdn.au.dk
Other
Optional
Execution 70ms
Transfer 41 KB
Unused 67%
Monthly Cost kr6/mo

These scripts may cost more than they're worth

  • cdn.au.dk adds 692ms and costs ~kr57/month
  • www.au.dk adds 540ms and costs ~kr44/month
  • Unattributable adds 493ms and costs ~kr40/month
  • Google Tag Manager adds 206ms and costs ~kr17/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

cdn.au.dk takes 692ms 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

77% of cdn.au.dk's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

www.au.dk takes 540ms 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 493ms 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

Google Tag Manager takes 206ms 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

57% of Google Tag Manager's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

89% of cdn.apple-mapkit.com's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

Source: web.dev

67% of cdn.au.dk's code is unused. The script may be loading features you don't use.

Why this matters

Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.

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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