Performance
· 15 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.
1.83 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
2.11 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
246 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.922
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
3.68 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.
4.29 s
Page Load Progression
618 ms
1.2 s
1.9 s 2.5 s
3.1 s
3.7 s 4.3 s
4.9 sFPage Weight BudgetAction3.0 MB transferred, 292 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
Subset fonts to include only used characters, or switch to system font stacks.
Font payload is large — subset to used glyphs only, or fall back to system fonts (zero load time).
Source: web.dev font loading
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
DJS Execution CostAction2844ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.faz.net/aktuell/ | 902ms | 55ms | 2ms | 3rd |
| https://www.faz.net/_nuxt/Y_yNO3W2.js | 642ms | 554ms | 2ms | 3rd |
| Unattributable | 406ms | 102ms | 0ms | 3rd |
| https://cdn.storifyme.xyz/static/web-components/storifyme-elements-v2.min.js | 244ms | 35ms | 5ms | 3rd |
| https://assets.adobedtm.com/101b76c36d9a/299bb2761e13/launch-b62c4c37ed74.min.js | 209ms | 129ms | 29ms | 3rd |
| https://www.faz.net/_nuxt/DNFXikqV.js | 141ms | 6ms | 0ms | 3rd |
| https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js | 129ms | 9ms | 19ms | 3rd |
| https://snacks.faz.net/assets/fsw-4bddb8ef.js | 93ms | 36ms | 0ms | 3rd |
| https://www.faz.net/iq/cdn_iqdfaz/live/iqadcontroller.js.gz | 78ms | 49ms | 23ms | 3rd |
DPage Weight InventoryAction292 resources · 3.0 MB · 267 KB savings availableFIX
~267.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 292 resources | 3.0 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization25 images, 0 KB saveableREVIEW
CJS BundlesAction143 scripts, 267 KB unusedREVIEW
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.faz.net/_nuxt/Y_yNO3W2.js | 183 KB | 58 KB (32%) | ✓ | 3rd |
| https://assets.adobedtm.com/101b76c36d9a/299bb2761e13/launch-b62c4c37ed74.min.js | 169 KB | 56 KB (33%) | ✓ | 3rd |
| https://www.faz.net/_nuxt/BZDSjRy2.js | 69 KB | 36 KB (54%) | ✓ | 3rd |
| https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js | 44 KB | 28 KB (64%) | ✓ | 3rd |
| https://consent.faz.net/wrapperMessagingWithoutDetection.js | 54 KB | 23 KB (43%) | ✓ | 3rd |
| https://snacks.faz.net/assets/Fallback-e01f9a40.js | 24 KB | 23 KB (98%) | ✓ | 3rd |
| https://www.faz.net/_nuxt/B84tuDQJ.js | 29 KB | 23 KB (77%) | ✓ | 3rd |
| https://atonato.de/fazscr | 26 KB | 22 KB (88%) | ✓ | 3rd |
| https://www.faz.net/_nuxt/Dw-Xbajj.js | 5 KB | — | ✓ | 3rd |
| https://static.cleverpush.com/channel/loader/v3LddGcmHMyc4wNxg.js | 48 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
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 Loading23 fonts (1019 KB)PASS
Web fonts
23
1019 KB total
Render-blocking
0
of 23
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
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
- Convert to woff2 for ~30% smaller file size
- 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 ~520 KB and ~1040 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
Network Waterfall292 requests over 5730msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.faz.net www.faz.net | Other | 902ms | 197 KB | — | €10/mo | Costly |
www.faz.net www.faz.net | Other | 642ms | 183 KB | 32% | €7/mo | Costly |
Unattributable Unattributable | Other | 406ms | 0 KB | — | €4/mo | Costly |
cdn.storifyme.xyz cdn.storifyme.xyz | Other | 244ms | 32 KB | — | €3/mo | Costly |
assets.adobedtm.com assets.adobedtm.com | Other | 209ms | 169 KB | 33% | €2/mo | Costly |
www.faz.net www.faz.net | Other | 141ms | 25 KB | — | €2/mo | Optional |
jsDelivr cdn.jsdelivr.net | CDN | 129ms | 44 KB | 64% | €1/mo | Optional |
snacks.faz.net snacks.faz.net | Other | 93ms | 33 KB | — | €1/mo | Optional |
www.faz.net www.faz.net | Other | 78ms | 76 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.faz.net adds 902ms and costs ~€10/month
- www.faz.net adds 642ms and costs ~€7/month
- Unattributable adds 406ms and costs ~€4/month
- cdn.storifyme.xyz adds 244ms and costs ~€3/month
- assets.adobedtm.com adds 209ms 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.faz.net takes 902ms 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.faz.net takes 642ms 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 406ms 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
cdn.storifyme.xyz takes 244ms 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
assets.adobedtm.com takes 209ms 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 jsDelivr'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