Consider code splitting or tree shaking to reduce unused code.
Why this matters
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.
Why this matters
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.
Why this matters
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.
Why this matters
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.
Why this matters
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
i
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.
C
Document Compression
Action
Document response served uncompressed
REVIEW
Document 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
Main HTML Cache-Control
Main HTML max-age=3600 (~60min)
REVIEW
Main HTML max-age=3600 (~60min)
Info::
i
Main HTML cached for 60 minutes -- mild staleness risk
Got: max-age=3600
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::
!
2 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 5.8 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
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
14 fonts (504 KB)
PASS
14 fonts (504 KB)
Info::
i
14 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
14
504 KB total
Render-blocking
0
of 14
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
memvYaGs126MiZpBA-UvWbX...woff2swap
Size42 KB
Load time110 ms
Start2.1 s
RiskFOUT — text flashes from fallback to web font
modules.woffwoffswap
Size90 KB
Load time132 ms
Start2.1 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
JTUSjIg1_i6t8kCHKm459Wl...woff2swap
Size35 KB
Load time116 ms
Start2.1 s
RiskFOUT — text flashes from fallback to web font
LDIoaomQNQcsA88c7O9yZ4K...woff2swap
Size27 KB
Load time115 ms
Start2.1 s
RiskFOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLDz8Z1x...woff2swap
Size8 KB
Load time70 ms
Start2.1 s
RiskFOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLGT9Z1x...woff2swap
Size8 KB
Load time59 ms
Start2.1 s
RiskFOUT — text flashes from fallback to web font
pxiByp8kv8JHgFVrLCz7Z1x...woff2swap
Size8 KB
Load time53 ms
Start2.1 s
RiskFOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX...woff2swap
Size22 KB
Load time114 ms
Start2.1 s
RiskFOUT — text flashes from fallback to web font
fa-solid-900.woff2woff2swap
Size79 KB
Load time118 ms
Start2.2 s
RiskFOUT — text flashes from fallback to web font
JTUQjIg1_i6t8kCHKm459Wx...woff2swap
Size36 KB
Load time40 ms
Start2.3 s
RiskFOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a...woff2swap
Size34 KB
Load time118 ms
Start2.8 s
RiskFOUT — text flashes from fallback to web font
dashicons.woffwoffswap
Size26 KB
Load time34 ms
Start2.9 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
fa-regular-400.woff2woff2swap
Size14 KB
Load time64 ms
Start3.6 s
RiskFOUT — text flashes from fallback to web font
fa-solid-900.woff2woff2swap
Size77 KB
Load time68 ms
Start3.6 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 ~35 KB and ~70 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+
Asset Compression
All 1 asset host use brotli
PASS
All 1 asset host use brotli
Info::
✓
cdnjs.cloudflare.com serves assets with brotli (assets: 4)
Got: cdnjs.cloudflare.com (text/css)
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+
Server Response Intelligence
1 server-response signal(s) detected
PASS
1 server-response signal(s) detected
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
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
✓
No CSS performance depth issues detected
A
HTTP Caching
max-age=3600 (1 hour)
PASS
max-age=3600 (1 hour)
Info::
✓
Cache-Control header is set
Got: max-age=3600
Info::
✓
Effective TTL: 1 hour (max-age=3600)
Info::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
max-age=3600
Directive
Value
Meaning
max-age
3600
Cache for 1 hour
Effective TTL: 3600 seconds
Network Waterfall
106 requests over 5825ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
90%of JavaScript execution is third-party
First-party Third-party5194ms · 414KB · €56/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.leancure.com
www.leancure.com
Other
3183ms
69 KB
—
€35/mo
Costly
www.leancure.com
www.leancure.com
Other
742ms
34 KB
—
€8/mo
Costly
www.leancure.com
www.leancure.com
Other
478ms
108 KB
64%
€5/mo
Costly
www.formilla.com
www.formilla.com
Other
144ms
0 KB
82%
€2/mo
Optional
www.leancure.com
www.leancure.com
Other
134ms
14 KB
—
€1/mo
Optional
cdn.buttonizer.io
cdn.buttonizer.io
Other
114ms
1 KB
—
€1/mo
Optional
www.leancure.com
www.leancure.com
Other
111ms
41 KB
54%
€1/mo
Optional
cdn.buttonizer.io
cdn.buttonizer.io
Other
105ms
125 KB
61%
€1/mo
Optional
embed.typeform.com
embed.typeform.com
Other
95ms
15 KB
—
€1/mo
Optional
www.leancure.com
www.leancure.com
Other
87ms
5 KB
—
€1/mo
Optional
www.leancure.com
Other
Costly
Execution3183ms
Transfer69 KB
Monthly Cost€35/mo
www.leancure.com
Other
Costly
Execution742ms
Transfer34 KB
Monthly Cost€8/mo
www.leancure.com
Other
Costly
Execution478ms
Transfer108 KB
Unused64%
Monthly Cost€5/mo
www.formilla.com
Other
Optional
Execution144ms
Transfer0 KB
Unused82%
Monthly Cost€2/mo
www.leancure.com
Other
Optional
Execution134ms
Transfer14 KB
Monthly Cost€1/mo
cdn.buttonizer.io
Other
Optional
Execution114ms
Transfer1 KB
Monthly Cost€1/mo
www.leancure.com
Other
Optional
Execution111ms
Transfer41 KB
Unused54%
Monthly Cost€1/mo
cdn.buttonizer.io
Other
Optional
Execution105ms
Transfer125 KB
Unused61%
Monthly Cost€1/mo
embed.typeform.com
Other
Optional
Execution95ms
Transfer15 KB
Monthly Cost€1/mo
www.leancure.com
Other
Optional
Execution87ms
Transfer5 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
www.leancure.com adds 3183ms and costs ~€35/month
www.leancure.com adds 742ms and costs ~€8/month
www.leancure.com adds 478ms and costs ~€5/month
90% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
Why this matters
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.leancure.com takes 3183ms 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
www.leancure.com takes 742ms 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
www.leancure.com takes 478ms 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
64% of www.leancure.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.
Source: web.dev
82% of www.formilla.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.
Source: web.dev
54% of www.leancure.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.
Source: web.dev
61% of cdn.buttonizer.io'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.