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.
C
Asset Compression
Action
1 of 3 asset hosts serve text uncompressed
REVIEW
1 of 3 asset hosts serve text uncompressed
Info::
i
cdn-cookieyes.com serves assets with gzip; brotli would be ~20% smaller (assets: 6)
Every current browser accepts brotli. On a CDN this is a per-pull-zone toggle (Cloudflare, Fastly, CloudFront, CDN77, Bunny all expose it); on an origin it needs the brotli module (nginx-brotli, Apache mod_brotli). The saving lands on the assets this host serves, not on the HTML document -- the document's own encoding is reported separately.
Got: cdn-cookieyes.com (application/javascript)
Warning::
!
fonts.googleapis.com serves text assets uncompressed (assets: 6)
The sampled response carries a text content type but no Content-Encoding, so the bytes go over the wire raw. Text compression typically removes 70-80% of a JS or CSS payload -- this is the single cheapest transfer win available on this host.
Got: fonts.googleapis.com (text/css)
Info::
✓
www.googletagmanager.com serves assets with brotli (assets: 3)
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.
Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
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 (626.3 KiB of 19.6 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
8 fonts (230 KB)
PASS
8 fonts (230 KB)
Info::
i
8 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
8
230 KB total
Render-blocking
0
of 8
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
icomoon.ttfttfswap
Size9 KB
Load time32 ms
Start4.2 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Qw3PZQNVED7rKGKxtqIqX5E...woff2swap
Size18 KB
Load time88 ms
Start4.4 s
RiskFOUT — text flashes from fallback to web font
Qw3PZQNVED7rKGKxtqIqX5E...woff2swap
Size17 KB
Load time88 ms
Start4.4 s
RiskFOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX...woff2swap
Size42 KB
Load time86 ms
Start4.4 s
RiskFOUT — text flashes from fallback to web font
Qw3PZQNVED7rKGKxtqIqX5E...woff2swap
Size18 KB
Load time88 ms
Start4.4 s
RiskFOUT — text flashes from fallback to web font
Qw3PZQNVED7rKGKxtqIqX5E...woff2swap
Size18 KB
Load time45 ms
Start4.5 s
RiskFOUT — text flashes from fallback to web font
modules.woffwoffswap
Size90 KB
Load time124 ms
Start4.5 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
l7gdbjpo0cum0ckerWCdmA_...woff2swap
Size18 KB
Load time33 ms
Start4.7 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 ~30 KB and ~60 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
9 hints, 0 missing preconnects
PASS
9 hints, 0 missing preconnects
Info::
i
1 URL(s) appear in multiple hints
The same href shouldn't appear in multiple hint rels -- one wins, the others are wasted markup and may confuse cache behavior. Sample: https://fonts.gstatic.com (preconnect+preconnect+preconnect).
Info::
✓
Page uses 9 resource hint(s)
Current Resource Hints
preconnect
4
preload
4
dns-prefetch
1
prefetch—
9 resource hints configured
The same href shouldn't appear in multiple hint rels -- one wins, the others are wasted markup and may confuse cache behavior. Sample: https://fonts.gstatic.com (preconnect+preconnect+preconnect).
Why this matters
Performance issues directly impact user engagement and conversion rates.
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
Got: no-store, no-cache, must-revalidate
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
JavaScript Blocking
1 JS blocking issue(s) detected
PASS
1 JS blocking issue(s) detected
Warning::
!
Total JS execution time is 4.5 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.
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.
Network Waterfall
83 requests over 5607ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
21%of JavaScript execution is third-party
First-party Third-party950ms · 479KB · €4/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Google Tag Manager
www.googletagmanager.com
Tag Manager
305ms
159 KB
44%
€1/mo
Costly
cdn-cookieyes.com
cdn-cookieyes.com
Other
217ms
33 KB
—
€1/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
197ms
134 KB
52%
€1/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
157ms
119 KB
55%
€1/mo
Optional
cdn-cookieyes.com
cdn-cookieyes.com
Other
74ms
34 KB
—
€0/mo
Optional
Google Tag Manager
Tag Manager
Costly
Execution305ms
Transfer159 KB
Unused44%
Monthly Cost€1/mo
cdn-cookieyes.com
Other
Costly
Execution217ms
Transfer33 KB
Monthly Cost€1/mo
Google Tag Manager
Tag Manager
Optional
Execution197ms
Transfer134 KB
Unused52%
Monthly Cost€1/mo
Google Tag Manager
Tag Manager
Optional
Execution157ms
Transfer119 KB
Unused55%
Monthly Cost€1/mo
cdn-cookieyes.com
Other
Optional
Execution74ms
Transfer34 KB
Monthly Cost€0/mo
These scripts may cost more than they're worth
Google Tag Manager adds 305ms and costs ~€1/month
cdn-cookieyes.com adds 217ms and costs ~€1/month
Google Tag Manager takes 305ms 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
cdn-cookieyes.com takes 217ms 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
52% of Google Tag Manager'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
55% of Google Tag Manager'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.