Performance
· 17 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.
3.12 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.
306 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.920
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
11.63 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.
5.62 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2659ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://verwaltung.bund.de/portal/public/assets/portal-frontend.2.0.0-2933780.js | 1218ms | 942ms | 4ms | 3rd |
| Unattributable | 563ms | 40ms | 0ms | 3rd |
| https://verwaltung.bund.de/portal/ | 502ms | 7ms | 2ms | 3rd |
| https://verwaltung.bund.de/leistungsverzeichnis/scripts/lv-search.v3.bundle.js | 215ms | 208ms | 2ms | 3rd |
| https://verwaltung.bund.de/konto/scripts/konto-frontend/p-bLMYUFxa.js | 104ms | 70ms | 0ms | 3rd |
| https://verwaltung.bund.de/konto/scripts/konto-frontend/p-58c65092.entry.js | 58ms | 49ms | 1ms | 3rd |
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BPage Weight Budget1.1 MB transferred, 88 requestsREVIEW
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
BImage Optimization25 images, 0 KB saveableREVIEW
BJS Bundles38 scripts, 136 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://verwaltung.bund.de/portal/public/assets/portal-frontend.2.0.0-2933780.js | 219 KB | 71 KB (33%) | ✓ | 3rd |
| https://verwaltung.bund.de/leistungsverzeichnis/scripts/lv-search.v3.bundle.js | 119 KB | 33 KB (28%) | ✓ | 3rd |
| https://verwaltung.bund.de/konto/scripts/konto-frontend/p-58c65092.entry.js | 63 KB | 32 KB (52%) | ✓ | 3rd |
| https://verwaltung.bund.de/portal/public/assets/portal-frontend.2.0.0-2933780147.js | 1 KB | — | ✓ | 3rd |
| https://verwaltung.bund.de/portal/public/assets/portal-frontend.2.0.0-29337806.js | 1 KB | — | ✓ | 3rd |
| https://verwaltung.bund.de/portal/public/assets/portal-frontend.2.0.0-2933780216.js | 78 KB | — | ✓ | 3rd |
| https://verwaltung.bund.de/portal/public/assets/portal-frontend.2.0.0-2933780197.js | 5 KB | — | ✓ | 3rd |
| https://verwaltung.bund.de/portal/public/assets/portal-frontend.2.0.0-2933780203.js | 1 KB | — | ✓ | 3rd |
| https://verwaltung.bund.de/portal/public/assets/portal-frontend.2.0.0-2933780185.js | 1 KB | — | ✓ | 3rd |
| https://verwaltung.bund.de/portal/public/assets/portal-frontend.2.0.0-2933780186.js | 5 KB | — | ✓ | 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
BPage Weight Inventory88 resources · 1.1 MB · 136 KB savings availableREVIEW
~136.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 88 resources | 1.1 MiB | ||||||
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 Loading2 fonts (39 KB)PASS
Web fonts
2
39 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
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)
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
Network Waterfall88 requests over 8221msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
verwaltung.bund.de verwaltung.bund.de | Other | 1218ms | 219 KB | 33% | €13/mo | Costly |
Unattributable Unattributable | Other | 563ms | 0 KB | — | €6/mo | Costly |
verwaltung.bund.de verwaltung.bund.de | Other | 502ms | 2 KB | — | €5/mo | Costly |
verwaltung.bund.de verwaltung.bund.de | Other | 215ms | 119 KB | 28% | €2/mo | Costly |
verwaltung.bund.de verwaltung.bund.de | Other | 104ms | 8 KB | — | €1/mo | Optional |
verwaltung.bund.de verwaltung.bund.de | Other | 58ms | 63 KB | 52% | €1/mo | Optional |
These scripts may cost more than they're worth
- verwaltung.bund.de adds 1218ms and costs ~€13/month
- Unattributable adds 563ms and costs ~€6/month
- verwaltung.bund.de adds 502ms and costs ~€5/month
- verwaltung.bund.de adds 215ms and costs ~€2/month
100% 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
verwaltung.bund.de takes 1218ms 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
Unattributable takes 563ms 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
verwaltung.bund.de takes 502ms 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
verwaltung.bund.de takes 215ms 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
52% of verwaltung.bund.de'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