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.
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 time404 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 time446 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
2D28C1_3_0.woff2woff2swap
Size49 KB
Load time452 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
2D28C1_2_0.woff2woff2swap
Size36 KB
Load time454 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
No optimization needed
PASS
No optimization needed
Info::
✓
No resource hint issues
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.
Network Waterfall
41 requests over 13155ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
34%of JavaScript execution is third-party
First-party Third-party659ms · 533KB · €10/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
338ms
0 KB
—
€5/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
133ms
162 KB
47%
€2/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
86ms
175 KB
39%
€1/mo
Optional
cdn.leadinfo.net
cdn.leadinfo.net
Other
52ms
21 KB
—
€1/mo
Optional
cdn.ldnfrpl.com
cdn.ldnfrpl.com
Other
51ms
175 KB
89%
€1/mo
Optional
Unattributable
Other
Costly
Execution338ms
Transfer0 KB
Monthly Cost€5/mo
Google Tag Manager
Tag Manager
Optional
Execution133ms
Transfer162 KB
Unused47%
Monthly Cost€2/mo
Google Tag Manager
Tag Manager
Optional
Execution86ms
Transfer175 KB
Unused39%
Monthly Cost€1/mo
cdn.leadinfo.net
Other
Optional
Execution52ms
Transfer21 KB
Monthly Cost€1/mo
cdn.ldnfrpl.com
Other
Optional
Execution51ms
Transfer175 KB
Unused89%
Monthly Cost€1/mo
These scripts may cost more than they're worth
Unattributable adds 338ms and costs ~€5/month
Unattributable takes 338ms 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.
1.9 s
3.9 s
5.8 s
7.7 s
9.7 s
11.6 s
13.5 s
15.5 s