https://routing-outdoors-hamburg-fan.trycloudflare.com
Performance
· 22 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.SCORE
94
GRADE
A
FIX
1
REVIEW
4
PASS
14
INFO
3
Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
98
100
100
61
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
760 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
895 ms
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
0 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.
1.17 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.
895 ms
Page Load Progression
375 ms 750 ms 1.1 s
1.5 s 1.9 s 2.2 s 2.6 s
3.0 sChecks
2214 PASS 4 REVIEW 1 FIX
DHTTP CachingActionno-store (uncacheable)FIX
HTTP Caching
Actionno-store (uncacheable)
no-store (uncacheable)
Info::
Cache-Control: no-store prevents all caching
Intentional for dynamic content, but increases server load for every page view.
Got: no-store, no-cache, must-revalidate
Info::
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
no-store, no-cache, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| no-store | — | Never cache this response |
| no-cache | — | Cache but always revalidate first |
| must-revalidate | — | Must recheck with server after expiry |
BImage Optimization20 images, 0 KB saveableREVIEW
Image Optimization
20 images, 0 KB saveable
20 images, 0 KB saveable
Info::
All images are well-optimized
20 images 274 KB
0 oversized -0 KB
4 legacy format
0 missing dimensions CLS risk
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
HTTP/3 (QUIC)
HTTP/3 not advertised
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
BDocument CompressionDocument response uses gzip; brotli would be ~20% smallerREVIEW
Document Compression
Document response uses gzip; brotli would be ~20% smaller
Document response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
Server-Timing Observability
No Server-Timing header found
No Server-Timing header found
Info::
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.
A+Page Weight Budget346 KB transferred, 29 requestsPASS
Page Weight Budget
346 KB transferred, 29 requests
346 KB transferred, 29 requests
Info::
Page weighs 526 KB (346 KB transferred)
Info::
29 HTTP requests
Info::
Estimated 0.07 g CO2 per page load
346 KB transferred
29 requests
0.07 g CO2 per page load
Images 275.6 KiB 80%
Other 32.7 KiB 9%
CSS 21.0 KiB 6%
HTML 8.8 KiB 3%
JavaScript 7.4 KiB 2%
Other 669 B 0%
0 2.4 MB 4.9 MB
Under budget
A+Third-Party ImpactNo third-party resourcesPASS
Third-Party Impact
No third-party resources
No third-party resources
Info::
No third-party resources detected
No third-party resources detected — all resources are first-party.
A+Text CompressionAll text resources are compressedPASS
Text Compression
All text resources are compressed
All text resources are compressed
Info::
All text resources are compressed
All text resources are properly compressed.
A+JS Execution Cost195ms total JS executionPASS
JS Execution Cost
195ms total JS execution
195ms total JS execution
Info::
https://routing-outdoors-hamburg-fan.trycloudflare...: 117ms CPU time
Info::
Unattributable: 78ms CPU time
Main Thread Breakdown
Other 42% Style & Layout 29% Rendering 13% Script Evaluation 12% Parse HTML & CSS 4%
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://routing-outdoors-hamburg-fan.trycloudflare.com/ | 117ms | 6ms | 1ms | 1st |
| Unattributable | 78ms | 2ms | 0ms | 1st |
A+Font LoadingNo web fonts (system fonts)PASS
Font Loading
No web fonts (system fonts)
No web fonts (system fonts)
Info::
No web fonts loaded — system fonts are fastest
No web fonts loaded — system fonts are optimal.
A+JS Bundles2 scripts, 0 KB unusedPASS
JS Bundles
2 scripts, 0 KB unused
2 scripts, 0 KB unused
0 KB unused JavaScript
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://routing-outdoors-hamburg-fan.trycloudflare.com/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js | 1 KB | — | ✓ | 1st |
| https://routing-outdoors-hamburg-fan.trycloudflare.com/atb-site.min.js?v=20260927r4 | 7 KB | — | ✓ | 1st |
A+Resource CachingAll resources properly cachedPASS
Resource Caching
All resources properly cached
All resources properly cached
Info::
No caching issues found
All static resources have appropriate caching headers.
A+Critical Rendering PathNo render-blocking resourcesPASS
Critical Rendering Path
No render-blocking resources
No render-blocking resources
Info::
No render-blocking resources detected
A+Resource HintsNo optimization neededPASS
Resource Hints
No optimization needed
No optimization needed
Info::
No resource hint issues
A+LCP Image PreloadLCP preload audit not availablePASS
LCP Image Preload
LCP preload audit not available
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+Main HTML Cache-ControlMain HTML uses no-store -- correct for sensitive/dynamic contentPASS
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
Main HTML uses no-store -- correct for sensitive/dynamic content
Got: no-store, no-cache, must-revalidate
AServer Response Intelligence2 server-response signal(s) detectedPASS
Server Response Intelligence
2 server-response signal(s) detected
2 server-response signal(s) detected
Warning::
Compressed response missing `Vary` header
The page is served with `Content-Encoding: gzip` but has no `Vary` header. Without `Vary: Accept-Encoding`, intermediary caches (corporate proxies, ISP caches) may serve the compressed variant to clients that didn't send the matching `Accept-Encoding` -- the client sees garbled bytes. Add `Vary: Accept-Encoding` whenever the response is conditionally compressed.
Info::
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+Page Weight Inventory29 resources · 346 KB · 0 KB savings availablePASS
Page Weight Inventory
29 resources · 346 KB · 0 KB savings available
29 resources · 346 KB · 0 KB savings available
Info::
Within 1MB page-weight target
Got: 346 KB
29 resources · 346.2 KiB · 0 third-party Within 1MB page-weight target
Image 89% · 308.3 KiB
CSS 6% · 21.0 KiB
Document 3% · 8.8 KiB
JavaScript 2% · 7.4 KiB
Other 0% · 669 B
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 29 resources | 346.2 KiB | ||||||
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
Whether the site is served from green-energy infrastructure
Green Hosting
This site is hosted on green energy infrastructure
Provider: Cloudflare
Asset CompressionNo text asset hosts to measureINFO
Asset Compression
No text asset hosts to measure
No text asset hosts to measure
Info::
No third-party or subdomain host served enough text assets to measure
Asset compression is measured per host, from one HEAD request against a sampled resource. Pages that serve all their JS and CSS from the document's own origin are covered by the document compression check instead.
Network Waterfall29 requests over 3463msINFO
Network Waterfall
29 requests over 3463ms
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Image Optimization26 images, 83 KB total, 0 KB wastedINFO
Image Optimization
26 images, 83 KB total, 0 KB wasted
Image Optimization Audit
Total Images
26
Total Size
83 KB
1 missing dimensions 1 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.