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.
5.23 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
12.94 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
702 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
6.56 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.
13.03 s
Page Load Progression
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
FJS Execution CostAction4427ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.kleinanzeigen.de/WFxkaIMiXtGDAz_nIdas_5vo/E3c9t0wz6cpXmD/cEMlcQYB/TQAoKi/EIaiAB | 989ms | 824ms | 52ms | 3rd |
| Unattributable | 804ms | 79ms | 0ms | 3rd |
| https://server.sgtm-legacy.kleinanzeigen.de/gtag/js?id=G-6V6MWRHVN8&cx=c>m=4e64h1&sign=5399af822fe5f222221d91e339e9942d579aa06ea5b5b43cc7a80dbafdf09638_20260421 | 528ms | 472ms | 52ms | 3rd |
| https://server.sgtm-legacy.kleinanzeigen.de/gtm.js?id=GTM-TXFVM46 | 518ms | 429ms | 63ms | 3rd |
| https://n1ux7flhug.kameleoon.io/engine.js | 475ms | 200ms | 29ms | 3rd |
| https://www.kleinanzeigen.de/ | 353ms | 68ms | 15ms | 3rd |
| https://www.kleinanzeigen.de/liberty/liberty-js-cp/prebid-experimental/prebid.js | 187ms | 108ms | 71ms | 3rd |
| https://www.kleinanzeigen.de/akam/13/6a823959 | 128ms | 109ms | 3ms | 3rd |
| https://static.kleinanzeigen.de/m/js/all-zepto.nsf2ssnggscf.js | 111ms | 51ms | 10ms | 3rd |
| https://www.kleinanzeigen.de/liberty/liberty-js-cp/liberty.min.js | 93ms | 78ms | 14ms | 3rd |
Showing top 10 of 13 scripts
DJS BundlesAction29 scripts, 437 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.kleinanzeigen.de/liberty/liberty-js-cp/prebid-experimental/prebid.js | 126 KB | 109 KB (87%) | ✓ | 3rd |
| https://static.kleinanzeigen.de/m/js/all-zepto.nsf2ssnggscf.js | 99 KB | 71 KB (72%) | ✓ | 3rd |
| https://static.kleinanzeigen.de/m/js/top.u2i7h09ec0yj.js | 82 KB | 64 KB (78%) | ✓ | 3rd |
| https://server.sgtm-legacy.kleinanzeigen.de/gtag/js?id=G-6V6MWRHVN8&cx=c>m=4e64h1&sign=5399af822fe5f222221d91e339e9942d579aa06ea5b5b43cc7a80dbafdf09638_20260421 | 174 KB | 58 KB (33%) | ✓ | 3rd |
| https://server.sgtm-legacy.kleinanzeigen.de/gtm.js?id=GTM-TXFVM46 | 158 KB | 53 KB (34%) | ✓ | 3rd |
| https://www.kleinanzeigen.de/WFxkaIMiXtGDAz_nIdas_5vo/E3c9t0wz6cpXmD/cEMlcQYB/TQAoKi/EIaiAB | 176 KB | 37 KB (21%) | ✓ | 3rd |
| https://www.kleinanzeigen.de/bffstatic/ka-kameleoon/ka-kml-experimentation-bundle.js | 41 KB | 24 KB (59%) | ✓ | 3rd |
| https://www.kleinanzeigen.de/liberty/liberty-js-cp/liberty.min.js | 51 KB | 20 KB (40%) | ✓ | 3rd |
| https://www.kleinanzeigen.de/akam/13/6a823959 | 9 KB | — | ✓ | 3rd |
| https://www.kleinanzeigen.de/gdpr/gdpr-consent-management-platform/es/tcfApiBanner.min.js | 0 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
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 InventoryAction113 resources · 1.6 MB · 437 KB savings availableFIX
~436.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 113 resources | 1.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CPage Weight BudgetAction1.6 MB transferred, 113 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
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
BImage Optimization63 images, 0 KB saveableREVIEW
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 LoadingNo web fonts (system fonts)PASS
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 Waterfall113 requests over 2035msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.kleinanzeigen.de www.kleinanzeigen.de | Other | 989ms | 1 KB | 21% | €11/mo | Costly |
Unattributable Unattributable | Other | 804ms | 0 KB | — | €9/mo | Costly |
server.sgtm-legacy.kleinanzeigen.de server.sgtm-legacy.kleinanzeigen.de | Other | 528ms | 174 KB | 33% | €6/mo | Costly |
server.sgtm-legacy.kleinanzeigen.de server.sgtm-legacy.kleinanzeigen.de | Other | 518ms | 158 KB | 34% | €6/mo | Costly |
n1ux7flhug.kameleoon.io n1ux7flhug.kameleoon.io | Other | 475ms | 50 KB | — | €5/mo | Costly |
www.kleinanzeigen.de www.kleinanzeigen.de | Other | 353ms | 23 KB | — | €4/mo | Costly |
www.kleinanzeigen.de www.kleinanzeigen.de | Other | 187ms | 126 KB | 87% | €2/mo | Optional |
www.kleinanzeigen.de www.kleinanzeigen.de | Other | 128ms | 9 KB | — | €1/mo | Optional |
static.kleinanzeigen.de static.kleinanzeigen.de | Other | 111ms | 99 KB | 72% | €1/mo | Optional |
www.kleinanzeigen.de www.kleinanzeigen.de | Other | 93ms | 51 KB | 40% | €1/mo | Optional |
www.kleinanzeigen.de www.kleinanzeigen.de | Other | 90ms | 0 KB | — | €1/mo | Optional |
static.kleinanzeigen.de static.kleinanzeigen.de | Other | 86ms | 82 KB | 78% | €1/mo | Optional |
www.kleinanzeigen.de www.kleinanzeigen.de | Other | 67ms | 41 KB | 59% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.kleinanzeigen.de adds 989ms and costs ~€11/month
- Unattributable adds 804ms and costs ~€9/month
- server.sgtm-legacy.kleinanzeigen.de adds 528ms and costs ~€6/month
- server.sgtm-legacy.kleinanzeigen.de adds 518ms and costs ~€6/month
- n1ux7flhug.kameleoon.io adds 475ms and costs ~€5/month
- www.kleinanzeigen.de adds 353ms and costs ~€4/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
www.kleinanzeigen.de takes 989ms 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 804ms 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
server.sgtm-legacy.kleinanzeigen.de takes 528ms 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
server.sgtm-legacy.kleinanzeigen.de takes 518ms 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
n1ux7flhug.kameleoon.io takes 475ms 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.kleinanzeigen.de takes 353ms 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
87% of www.kleinanzeigen.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
72% of static.kleinanzeigen.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
78% of static.kleinanzeigen.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
59% of www.kleinanzeigen.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