https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.party-schlaudt.de/layout/callisto_3/im... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentymarkets.com/s8ix3rhxk064/front... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentymarkets.com/s8ix3rhxk064/front... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentymarkets.com/s8ix3rhxk064/front... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://payments.amazon.de/gp/widgets/button?selle... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.party-schlaudt.de/layout/callisto_3/im... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://cdn02.plentyone.com/s8ix3rhxk064/item/imag... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
44images8.0 MB
0oversized-0 KB
14legacy format
35missing dimensionsCLS risk
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
i
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
B
JavaScript Blocking
1 JS blocking issue(s) detected
REVIEW
1 JS blocking issue(s) detected
Warning::
!
12 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
B
HTTP Caching
no-cache
REVIEW
no-cache
Info::
✓
Cache-Control header is set
Got: no-cache
Info::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
no-cache
Directive
Value
Meaning
no-cache
—
Cache but always revalidate first
A+
Text Compression
All text resources are compressed
PASS
All text resources are compressed
Info::
✓
All text resources are compressed
All text resources are properly compressed.
A+
Font Loading
6 fonts (162 KB)
PASS
6 fonts (162 KB)
Info::
i
6 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
6
162 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
cssunknownswap
Size2 KB
Load time96 ms
Start160 ms
RiskFOUT — text flashes from fallback to web font
fontawesome-webfont.woff2unknownswap
Size76 KB
Load time191 ms
Start382 ms
RiskFOUT — text flashes from fallback to web font
open-sans-v34-latin-ita...woffswap
Size22 KB
Load time85 ms
Start383 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
open-sans-v34-latin-reg...woffswap
Size21 KB
Load time105 ms
Start383 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
open-sans-v34-latin-700...woffswap
Size20 KB
Load time110 ms
Start383 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
open-sans-v34-latin-600...woffswap
Size21 KB
Load time33 ms
Start830 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
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 ~49 KB and ~98 ms
A+
Resource Caching
All resources properly cached
PASS
All resources properly cached
Info::
✓
No caching issues found
All static resources have appropriate caching headers.
A+
Critical Rendering Path
No render-blocking resources
PASS
No render-blocking resources
Info::
✓
No render-blocking resources detected
A+
Resource Hints
1 hints, 0 missing preconnects
PASS
1 hints, 0 missing preconnects
Info::
✓
Page uses 1 resource hint(s)
Current Resource Hints
preconnect—
preload
1
dns-prefetch—
prefetch—
1 resource hints configured
A+
HTTP/3 (QUIC)
HTTP/3 advertised via Alt-Svc
PASS
HTTP/3 advertised via Alt-Svc
Info::
✓
HTTP/3 (QUIC) is supported
First-load mobile users on cellular networks see meaningful latency improvements with HTTP/3. The QUIC transport collapses TLS + TCP handshakes into one and recovers faster from packet loss.
A+
Compression Algorithm
Main response uses brotli
PASS
Main response uses brotli
Info::
✓
Main HTML response uses brotli (Content-Encoding: br)
Brotli is the best text-compression algorithm for general use, ~20% smaller than gzip on average (40% on smaller files). Modern browsers all support it.
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
✓
LCP image preload audit not available for this scan
A+
Main HTML Cache-Control
Main HTML uses no-cache -- safe revalidate-on-request policy
PASS
Main HTML uses no-cache -- safe revalidate-on-request policy
Info::
✓
Main HTML uses no-cache -- safe revalidate-on-request policy
Got: no-cache
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
✓
`Vary` header declared: Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
i
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
✓
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A
CSS Performance Depth
1 CSS depth issue(s) detected
PASS
1 CSS depth issue(s) detected
Warning::
!
6 `@font-face` rule(s) without `font-display` -- causes FOIT
An `@font-face` rule without `font-display` causes Flash of Invisible Text (FOIT): the browser hides the styled text for up to 3 seconds while the custom font downloads, then either swaps to fallback (Chrome / Firefox) or stays invisible (older Safari). Add `font-display: swap` (shows fallback immediately, swaps in the custom font when ready) or `font-display: optional` (uses fallback if the font isn't ready in 100ms; never causes visible swap). Either eliminates FOIT outright.
Network Waterfall
105 requests over 3253ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
53%of JavaScript execution is third-party
First-party Third-party1592ms · 615KB · €7/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
cdn02.plentyone.com
cdn02.plentyone.com
Other
890ms
256 KB
40%
€4/mo
Costly
PayPal
www.paypal.com
Payment
329ms
154 KB
60%
€2/mo
Essential
Google Tag Manager
www.googletagmanager.com
Tag Manager
153ms
131 KB
51%
€1/mo
Optional
applepay.cdn-apple.com
applepay.cdn-apple.com
Other
97ms
48 KB
—
€0/mo
Optional
cdn02.plentyone.com
cdn02.plentyone.com
Other
72ms
5 KB
—
€0/mo
Optional
Google Analytics
www.google-analytics.com
Analytics
51ms
21 KB
—
€0/mo
Optional
cdn02.plentyone.com
Other
Costly
Execution890ms
Transfer256 KB
Unused40%
Monthly Cost€4/mo
PayPal
Payment
Essential
Execution329ms
Transfer154 KB
Unused60%
Monthly Cost€2/mo
Google Tag Manager
Tag Manager
Optional
Execution153ms
Transfer131 KB
Unused51%
Monthly Cost€1/mo
applepay.cdn-apple.com
Other
Optional
Execution97ms
Transfer48 KB
Monthly Cost€0/mo
cdn02.plentyone.com
Other
Optional
Execution72ms
Transfer5 KB
Monthly Cost€0/mo
Google Analytics
Analytics
Optional
Execution51ms
Transfer21 KB
Monthly Cost€0/mo
These scripts may cost more than they're worth
cdn02.plentyone.com adds 890ms and costs ~€4/month
53% of JavaScript execution time comes from third-party scripts.
Why this matters
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
cdn02.plentyone.com takes 890ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
Why this matters
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
60% of PayPal's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
51% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Why this matters
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
375 ms
2.6 s