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
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
B
HTTP Caching
public, max-age=0, must-revalidate
REVIEW
public, max-age=0, must-revalidate
Info::
✓
Cache-Control header is set
Got: public, max-age=0, must-revalidate
Info::
i
No ETag or Last-Modified header
Conditional requests (304 Not Modified) are not possible without validators.
Cache-Control
public, max-age=0, must-revalidate
Directive
Value
Meaning
public
—
Any cache may store this response
max-age
0
Cache for 0 seconds
must-revalidate
—
Must recheck with server after expiry
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
13 images, 0 KB saveable
PASS
13 images, 0 KB saveable
Info::
✓
All images are well-optimized
13images429 KB
0oversized-0 KB
0legacy format
0missing dimensionsCLS risk
A+
Font Loading
3 fonts (45 KB)
PASS
3 fonts (45 KB)
Info::
i
3 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
3
45 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
open-sans-v34-latin-700...woff2swap
Size16 KB
Load time23 ms
Start144 ms
RiskFOUT — text flashes from fallback to web font
open-sans-v34-latin-reg...woff2swap
Size16 KB
Load time17 ms
Start148 ms
RiskFOUT — text flashes from fallback to web font
oswald-v53-latin-500.woff2woff2swap
Size13 KB
Load time16 ms
Start205 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)
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
Network Waterfall
51 requests over 1190ms
INFO
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100%of JavaScript execution is third-party
First-party Third-party980ms · 650KB · €11/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
Unattributable
Unattributable
Other
327ms
0 KB
—
€4/mo
Costly
www.transparency.org
www.transparency.org
Other
206ms
60 KB
—
€2/mo
Costly
consent.cookiebot.com
consent.cookiebot.com
Other
136ms
113 KB
23%
€1/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
92ms
172 KB
39%
€1/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
80ms
160 KB
42%
€1/mo
Optional
www.transparency.org
www.transparency.org
Other
77ms
0 KB
—
€1/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
62ms
144 KB
46%
€1/mo
Optional
Unattributable
Other
Costly
Execution327ms
Transfer0 KB
Monthly Cost€4/mo
www.transparency.org
Other
Costly
Execution206ms
Transfer60 KB
Monthly Cost€2/mo
consent.cookiebot.com
Other
Optional
Execution136ms
Transfer113 KB
Unused23%
Monthly Cost€1/mo
Google Tag Manager
Tag Manager
Optional
Execution92ms
Transfer172 KB
Unused39%
Monthly Cost€1/mo
Google Tag Manager
Tag Manager
Optional
Execution80ms
Transfer160 KB
Unused42%
Monthly Cost€1/mo
www.transparency.org
Other
Optional
Execution77ms
Transfer0 KB
Monthly Cost€1/mo
Google Tag Manager
Tag Manager
Optional
Execution62ms
Transfer144 KB
Unused46%
Monthly Cost€1/mo
These scripts may cost more than they're worth
Unattributable adds 327ms and costs ~€4/month
www.transparency.org adds 206ms and costs ~€2/month
100% 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
Unattributable takes 327ms 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.transparency.org takes 206ms 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.