Performance
· 26 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
7.26 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
14.68 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.19 s
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.008
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
10.06 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.
17.56 s
Page Load Progression
FPage Weight BudgetAction16.6 MB transferred, 186 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
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.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
Each request adds latency. Bundle small files, use sprites, or eliminate unnecessary requests.
High HTTP request count — bundling, sprite-ing, and HTTP/2 server push can reduce per-request overhead.
Source: web.dev
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction16954ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.dr.dk/ | 4932ms | 41ms | 56ms | 3rd |
| https://www.dr.dk/hydra/resources/_next/static/chunks/main-app-cf938d03eb22c849.js | 4928ms | 3921ms | 43ms | 3rd |
| Unattributable | 1974ms | 105ms | 0ms | 1st |
| https://consent.cookiebot.com/uc.js?cbid=258095c6-67bb-4e09-8c33-4eda8f42c049&implementation=gtm&advertiserConsentMode=disabled | 1107ms | 114ms | 14ms | 3rd |
| https://www.dr.dk/hydra/resources/_next/static/chunks/common-0fc2ed1f59e8ec66.js | 951ms | 412ms | 144ms | 3rd |
| https://www.dr.dk/statisk/cep-banners/serve@1.0.0-rc.1.js | 715ms | 66ms | 0ms | 3rd |
| https://www.dr.dk/tms/gtmp/tag.js?id=GTM-KCBPQTH>m_auth=Q9NGHPUfzKNV8SwAChk3Ng>m_preview=env-1>m_cookies_win=x | 552ms | 456ms | 55ms | 3rd |
| https://www.dr.dk/hydra/resources/_next/static/chunks/webpack-68b1f677c1fa5258.js | 511ms | 510ms | 1ms | 3rd |
| https://www.dr.dk/statisk/cep-banners/assets/templateSchema-CDtT7Dg8.js | 426ms | 270ms | 130ms | 3rd |
| https://consent.cookiebot.com/258095c6-67bb-4e09-8c33-4eda8f42c049/cc.js?renew=false&referer=www.dr.dk&dnt=false&init=false | 381ms | 159ms | 40ms | 3rd |
Showing top 10 of 13 scripts
FJS BundlesAction33 scripts, 554 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.dr.dk/hydra/resources/_next/static/chunks/common-0fc2ed1f59e8ec66.js | 343 KB | 167 KB (49%) | ✓ | 3rd |
| https://www.dr.dk/tms/gtmp/tag.js?id=GTM-KCBPQTH>m_auth=Q9NGHPUfzKNV8SwAChk3Ng>m_preview=env-1>m_cookies_win=x | 131 KB | 59 KB (45%) | ✓ | 3rd |
| https://www.dr.dk/statisk/dr-cookiedialog/bundle.js | 132 KB | 55 KB (41%) | ✓ | 3rd |
| https://www.dr.dk/statisk/cep-banners/assets/templateSchema-CDtT7Dg8.js | 0 KB | 45 KB (59%) | ✓ | 3rd |
| https://www.dr.dk/statisk/cep-banners/assets/templateSchema-CDtT7Dg8.js | 0 KB | 45 KB (59%) | ✓ | 3rd |
| https://www.dr.dk/statisk/cep-banners/assets/templateSchema-CDtT7Dg8.js | 0 KB | 45 KB (59%) | ✓ | 3rd |
| https://www.dr.dk/statisk/cep-banners/assets/templateSchema-CDtT7Dg8.js | 76 KB | 45 KB (59%) | ✓ | 3rd |
| https://consent.cookiebot.com/258095c6-67bb-4e09-8c33-4eda8f42c049/cc.js?renew=false&referer=www.dr.dk&dnt=false&init=false | 101 KB | 36 KB (36%) | ✓ | 3rd |
| https://www.dr.dk/hydra/resources/_next/static/chunks/main-app-cf938d03eb22c849.js | 98 KB | 36 KB (37%) | ✓ | 3rd |
| https://consent.cookiebot.com/uc.js?cbid=258095c6-67bb-4e09-8c33-4eda8f42c049&implementation=gtm&advertiserConsentMode=disabled | 36 KB | 23 KB (64%) | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction186 resources · 16.6 MB · 554 KB savings availableFIX
~554.4 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 186 resources | 16.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization43 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading15 fonts (199 KB)PASS
Web fonts
15
199 KB total
Render-blocking
0
of 15
Dominant font-display
swap
Most common across fonts
Font loading timeline
- 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 ~68 KB and ~136 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
AResource Hints10 hints, 0 missing preconnectsPASS
Current Resource Hints
10 resource hints configured
Fonts are always fetched as crossorigin=anonymous; a preload without the attribute creates a different cache key, so the browser refetches when the actual font request happens. Sample: https://www.dr.dk/global/fonts/DRPublikUIVF-b49db5333dbc736c65cec4e56338975e.woff2. Add `crossorigin` (or `crossorigin="anonymous"`) to each preload.
Performance issues directly impact user engagement and conversion rates.
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
Network Waterfall186 requests over 4650msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.dr.dk www.dr.dk | Other | 4932ms | 111 KB | — | kr638/mo | Costly |
www.dr.dk www.dr.dk | Other | 4928ms | 98 KB | 37% | kr637/mo | Costly |
consent.cookiebot.com consent.cookiebot.com | Other | 1107ms | 36 KB | 64% | kr143/mo | Costly |
www.dr.dk www.dr.dk | Other | 951ms | 343 KB | 49% | kr123/mo | Costly |
www.dr.dk www.dr.dk | Other | 715ms | 10 KB | — | kr92/mo | Costly |
www.dr.dk www.dr.dk | Other | 552ms | 131 KB | 45% | kr71/mo | Costly |
www.dr.dk www.dr.dk | Other | 511ms | 3 KB | — | kr66/mo | Costly |
www.dr.dk www.dr.dk | Other | 426ms | 0 KB | 59% | kr55/mo | Costly |
consent.cookiebot.com consent.cookiebot.com | Other | 381ms | 101 KB | 36% | kr49/mo | Costly |
www.dr.dk www.dr.dk | Other | 337ms | 132 KB | 41% | kr44/mo | Costly |
www.dr.dk www.dr.dk | Other | 80ms | 25 KB | — | kr10/mo | Optional |
evs.cdp.dr.dk evs.cdp.dr.dk | Other | 59ms | 1 KB | — | kr8/mo | Optional |
These scripts may cost more than they're worth
- www.dr.dk adds 4932ms and costs ~kr638/month
- www.dr.dk adds 4928ms and costs ~kr637/month
- consent.cookiebot.com adds 1107ms and costs ~kr143/month
- www.dr.dk adds 951ms and costs ~kr123/month
- www.dr.dk adds 715ms and costs ~kr92/month
- www.dr.dk adds 552ms and costs ~kr71/month
- www.dr.dk adds 511ms and costs ~kr66/month
- www.dr.dk adds 426ms and costs ~kr55/month
- consent.cookiebot.com adds 381ms and costs ~kr49/month
- www.dr.dk adds 337ms and costs ~kr44/month
88% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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.dr.dk takes 4932ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.dr.dk takes 4928ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
consent.cookiebot.com takes 1107ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
64% of consent.cookiebot.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
www.dr.dk takes 951ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.dr.dk takes 715ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.dr.dk takes 552ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.dr.dk takes 511ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.dr.dk takes 426ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
59% of www.dr.dk's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
consent.cookiebot.com takes 381ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
www.dr.dk takes 337ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
Image Optimization105 images, 1 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
105
Total Size
1 KB