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.
4.21 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
11.39 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
499 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.
6.32 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.
11.45 s
Page Load Progression
FPage Weight BudgetAction4.2 MB transferred, 95 requestsFIX
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
DThird-Party ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2869ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.merkur.de/ | 771ms | 151ms | 5ms | 3rd |
| Unattributable | 638ms | 36ms | 0ms | 3rd |
| https://widgets.outbrain.com/outbrain.js | 412ms | 139ms | 27ms | 3rd |
| https://idcdn.de/static/common/js/vendor/requirejs/require.2.1.18.min.js | 204ms | 169ms | 1ms | 3rd |
| https://www.merkur.de/fdn/bootstrap/ | 195ms | 77ms | 6ms | 3rd |
| https://mv.outbrain.com/Multivac/api/get?url=https%3A%2F%2Fwww.merkur.de%2F&idx=0&rand=98234&widgetJSId=AR_13&va=true&et=true&format=html&px=10&py=27173&vpd=26350&settings=true&recs=true&cw=392&key=NANOWDGT01&tch=1&wdr-cs=1&adblck=0&abwl=0&obRecsAbtestVars=1550:5795&wdr-attribution-src=1&activeTab=true&lsl=1&chb=64&chfv=%5B%7B%22brand%22%3A%22Chromium%22%2C%22version%22%3A%22147.0.7727.101%22%7D%2C%7B%22brand%22%3A%22Not.A%2FBrand%22%2C%22version%22%3A%228.0.0.0%22%7D%5D&chm=moto%20g%20power%20(2022)&chpv=11.0&chrp=true&chp=Android&clientType=21&clientVer=90acd988123_2026-04-20&devMem=8&scrOri=l&hwc=4&ttfb=39&netQ=4g&ccnsnt=false&navt=navigate&version=90acd988123_2026-04-20&sig=G39Ufywc&apv=false&osLang=en-US&winW=412&winH=823&scrW=412&scrH=823&dpr=1.75&secured=true&cmpStat=0&ccpaStat=0&ogn=https%3A%2F%2Fwww.merkur.de%2F | 180ms | 132ms | 2ms | 3rd |
| https://static.revenuereel.com/player/397/default.js | 131ms | 52ms | 0ms | 3rd |
| https://cdn.opencmp.net/tcf-v2/platforms/modern/ui.js | 130ms | 94ms | 9ms | 3rd |
| https://cdn.opencmp.net/tcf-v2/platforms/modern/cmp-latest.js | 86ms | 66ms | 12ms | 3rd |
| https://cdn.binsiad.com/ins-ag/ins-ag.min.js?e=1 | 66ms | 43ms | 11ms | 3rd |
Showing top 10 of 11 scripts
DPage Weight InventoryAction95 resources · 4.2 MB · 145 KB savings availableFIX
~145.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 95 resources | 4.2 MiB | ||||||
BImage Optimization23 images, 0 KB saveableREVIEW
BJS Bundles26 scripts, 145 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://cdntrf.com/trf-merkur.js | 88 KB | 67 KB (77%) | ✓ | 3rd |
| https://widgets.outbrain.com/outbrain.js | 110 KB | 54 KB (49%) | ✓ | 3rd |
| https://cdn.opencmp.net/tcf-v2/platforms/modern/cmp-latest.js | 51 KB | 24 KB (48%) | ✓ | 3rd |
| https://www.merkur.de/sso/static/login/common/js/id-userid-sso.min-1798d8d1f7e05f44dff8486ffce2b026.js | 7 KB | — | ✓ | 3rd |
| https://idcdn.de/static/common/js/build/modules/2883373e8603b86fc54df3725af60091/id.core.js | 3 KB | — | ✓ | 3rd |
| https://cdn.opencmp.net/tcf-v2/cmp-stub-latest.js | 11 KB | — | ✓ | 3rd |
| https://cl.k5a.io/614855c8e16cdd72901684f2.module.js | 29 KB | — | ✓ | 3rd |
| https://idcdn.de/static/common/js/vendor/requirejs/require.2.1.18.min.js | 6 KB | — | ✓ | 3rd |
| https://cdn.binsiad.com/ins-ag/ins-ag.min.js?e=1 | 26 KB | — | ✓ | 3rd |
| https://idcdn.de/static/common/js/build/vendor/cd7115a64f8f5a67925bef79bbed4fe5/vendor-combined.js | 17 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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading3 fonts (46 KB)PASS
Web fonts
3
46 KB total
Render-blocking
0
of 3
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 Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 resource hints configured
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: ALL-INKL.COM
AHTTP Cachingmax-age=604800 (1 week)PASS
max-age=604800
| Directive | Value | Meaning |
|---|---|---|
| max-age | 604800 | Cache for 1 week |
Network Waterfall95 requests over 1683msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.merkur.de www.merkur.de | Other | 771ms | 105 KB | — | €8/mo | Costly |
Unattributable Unattributable | Other | 638ms | 0 KB | — | €7/mo | Costly |
widgets.outbrain.com widgets.outbrain.com | Other | 412ms | 110 KB | 49% | €4/mo | Costly |
idcdn.de idcdn.de | Other | 204ms | 6 KB | — | €2/mo | Costly |
www.merkur.de www.merkur.de | Other | 195ms | 30 KB | — | €2/mo | Optional |
mv.outbrain.com mv.outbrain.com | Other | 180ms | 8 KB | — | €2/mo | Optional |
static.revenuereel.com static.revenuereel.com | Other | 131ms | 25 KB | — | €1/mo | Optional |
cdn.opencmp.net cdn.opencmp.net | Other | 130ms | 29 KB | — | €1/mo | Optional |
cdn.opencmp.net cdn.opencmp.net | Other | 86ms | 51 KB | 48% | €1/mo | Optional |
cdn.binsiad.com cdn.binsiad.com | Other | 66ms | 26 KB | — | €1/mo | Optional |
cdntrf.com cdntrf.com | Other | 55ms | 88 KB | 77% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.merkur.de adds 771ms and costs ~€8/month
- Unattributable adds 638ms and costs ~€7/month
- widgets.outbrain.com adds 412ms and costs ~€4/month
- idcdn.de adds 204ms 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
www.merkur.de takes 771ms 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 638ms 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
widgets.outbrain.com takes 412ms 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
idcdn.de takes 204ms 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
77% of cdntrf.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