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.
C
Compression Algorithm
Action
Main response served uncompressed
REVIEW
Main response served uncompressed
Info::
i
Main HTML response has no Content-Encoding (uncompressed)
The main HTML document is served without compression. The Text Compression section above lists the broader picture; for the main response specifically, even gzip would shave ~70-80% off most text payloads.
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
2 JS blocking issue(s) detected
REVIEW
2 JS blocking issue(s) detected
Warning::
!
1 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.
Warning::
!
Total JS execution time is 10.3 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
B
HTTP Caching
max-age=0
REVIEW
max-age=0
Info::
✓
Cache-Control header is set
Got: max-age=0
Info::
✓
Last-Modified header present
Cache-Control
max-age=0
Directive
Value
Meaning
max-age
0
Cache for 0 seconds
A+
Third-Party Impact
3% third-party, 0 ms blocking
PASS
3% third-party, 0 ms blocking
Info::
i
Third-party code accounts for 3% of page weight (673.1 KiB of 19.3 MiB)
Info::
✓
Third-party blocking time is low (0 ms)
97%
First-party Third-party
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
4 fonts (167 KB)
PASS
4 fonts (167 KB)
Info::
i
4 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
4
167 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
FlamaCondensed-Medium.woffwoffswap
Size43 KB
Load time480 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
2D28C1_1_0.woff2woff2swap
Size39 KB
Load time484 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
2D28C1_3_0.woff2woff2swap
Size49 KB
Load time491 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
2D28C1_2_0.woff2woff2swap
Size36 KB
Load time498 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
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 ~13 KB and ~26 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—
dns-prefetch
1
prefetch—
1 resource hints configured
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 max-age=0 (≤ 5min) is appropriate
PASS
Main HTML max-age=0 (≤ 5min) is appropriate
Info::
✓
Main HTML max-age=0 (≤ 5min) is appropriate
Got: max-age=0
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::
✓
`Last-Modified` present -- timestamp-based conditional GET supported
Consider also setting `ETag` for stronger revalidation -- ETags are content hashes that don't suffer from clock-skew or DST issues. Last-Modified alone is functional for conditional GETs and not a bug.
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
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
✓
No CSS performance depth issues detected
Network Waterfall
42 requests over 13121ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
28%of JavaScript execution is third-party
First-party Third-party2890ms · 610KB · €46/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
1305ms
0 KB
—
€21/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
440ms
162 KB
47%
€7/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
356ms
175 KB
39%
€6/mo
Costly
cdn.ldnfrpl.com
cdn.ldnfrpl.com
Other
189ms
175 KB
89%
€3/mo
Optional
cdn.dreamdata.cloud
cdn.dreamdata.cloud
Other
178ms
35 KB
—
€3/mo
Optional
policy.app.cookieinformation.com
policy.app.cookieinformation.com
Other
177ms
14 KB
—
€3/mo
Optional
cdnjs
cdnjs.cloudflare.com
CDN
128ms
28 KB
—
€2/mo
Optional
cdn.leadinfo.net
cdn.leadinfo.net
Other
117ms
21 KB
—
€2/mo
Optional
Unattributable
Other
Costly
Execution1305ms
Transfer0 KB
Monthly Cost€21/mo
Google Tag Manager
Tag Manager
Costly
Execution440ms
Transfer162 KB
Unused47%
Monthly Cost€7/mo
Google Tag Manager
Tag Manager
Costly
Execution356ms
Transfer175 KB
Unused39%
Monthly Cost€6/mo
cdn.ldnfrpl.com
Other
Optional
Execution189ms
Transfer175 KB
Unused89%
Monthly Cost€3/mo
cdn.dreamdata.cloud
Other
Optional
Execution178ms
Transfer35 KB
Monthly Cost€3/mo
policy.app.cookieinformation.com
Other
Optional
Execution177ms
Transfer14 KB
Monthly Cost€3/mo
cdnjs
CDN
Optional
Execution128ms
Transfer28 KB
Monthly Cost€2/mo
cdn.leadinfo.net
Other
Optional
Execution117ms
Transfer21 KB
Monthly Cost€2/mo
These scripts may cost more than they're worth
Unattributable adds 1305ms and costs ~€21/month
Google Tag Manager adds 440ms and costs ~€7/month
Google Tag Manager adds 356ms and costs ~€6/month
Unattributable takes 1305ms 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
Google Tag Manager takes 440ms 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
Google Tag Manager takes 356ms 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
89% of cdn.ldnfrpl.com'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.