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
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.
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.
A+
Third-Party Impact
1% third-party, 0 ms blocking
PASS
1% third-party, 0 ms blocking
Info::
i
Third-party code accounts for 1% of page weight (530.1 KiB of 58.3 MiB)
Info::
✓
Third-party blocking time is low (0 ms)
99%
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
Image Optimization
32 images, 0 KB saveable
PASS
32 images, 0 KB saveable
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.commercialcarpetcleaning.london/assets... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
32images57.7 MB
0oversized-0 KB
0legacy format
26missing 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
A+
Font Loading
4 fonts (292 KB)
PASS
4 fonts (292 KB)
Info::
i
4 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
4
292 KB total
Render-blocking
0
of 4
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
fa-solid-900.woff2woff2swap
Size155 KB
Load time71 ms
Start660 ms
RiskFOUT — text flashes from fallback to web font
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
RrQQboN_4yJ0JmiMe2LE0ZJ...woff2swap
Size12 KB
Load time36 ms
Start661 ms
RiskFOUT — text flashes from fallback to web font
fa-brands-400.woff2woff2swap
Size117 KB
Load time82 ms
Start661 ms
RiskFOUT — text flashes from fallback to web font
Subset this font — over 100 KB suggests Latin Extended or full glyph coverage that most pages don't need
pxiEyp8kv8JHgFVrJJfecnF...woff2swap
Size8 KB
Load time45 ms
Start719 ms
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 ~136 KB and ~272 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+
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+
Document Compression
Document response uses brotli
PASS
Document 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+
Asset Compression
All 1 asset host use brotli
PASS
All 1 asset host use brotli
Info::
✓
cdnjs.cloudflare.com serves assets with brotli (assets: 3)
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+
Main HTML Cache-Control
Main HTML uses no-store -- correct for sensitive/dynamic content
PASS
Main HTML uses no-store -- correct for sensitive/dynamic content
Info::
✓
Main HTML uses no-store -- correct for sensitive/dynamic content
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.
Each `<link rel="stylesheet">` without a non-blocking `media` attribute holds up the first paint. Browsers download all of them before painting any content. Consolidate into 1-2 critical-path stylesheets; defer non-critical CSS via `<link rel="stylesheet" media="print" onload="this.media='all'">` or via the loadCSS pattern; inline above-the-fold CSS in `<style>` to short-circuit the request entirely.
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: Hetzner Online GmbH
Network Waterfall
70 requests over 2629ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
30%of JavaScript execution is third-party
First-party Third-party784ms · 208KB · €4/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Google Tag Manager
www.googletagmanager.com
Tag Manager
503ms
178 KB
42%
€2/mo
Costly
ajax.googleapis.com
ajax.googleapis.com
Other
281ms
30 KB
—
€1/mo
Costly
Google Tag Manager
Tag Manager
Costly
Execution503ms
Transfer178 KB
Unused42%
Monthly Cost€2/mo
ajax.googleapis.com
Other
Costly
Execution281ms
Transfer30 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
Google Tag Manager adds 503ms and costs ~€2/month
ajax.googleapis.com adds 281ms and costs ~€1/month
Google Tag Manager takes 503ms 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
ajax.googleapis.com takes 281ms 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.
