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
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
6 fonts (156 KB)
PASS
6 fonts (156 KB)
Info::
i
6 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
6
156 KB total
Render-blocking
0
of 6
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
overpass-semibold.woff2woff2swap
Size33 KB
Load time422 ms
Start1.8 s
RiskFOUT — text flashes from fallback to web font
opensans-regular.woff2woff2swap
Size19 KB
Load time213 ms
Start2.3 s
RiskFOUT — text flashes from fallback to web font
overpass-regular.woff2woff2swap
Size35 KB
Load time607 ms
Start2.3 s
RiskFOUT — text flashes from fallback to web font
opensans-semibold.woff2woff2swap
Size18 KB
Load time626 ms
Start2.3 s
RiskFOUT — text flashes from fallback to web font
opensans-bold.woff2woff2swap
Size18 KB
Load time648 ms
Start2.3 s
RiskFOUT — text flashes from fallback to web font
overpass-bold.woff2woff2swap
Size34 KB
Load time633 ms
Start2.4 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)
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
6 hints, 0 missing preconnects
PASS
6 hints, 0 missing preconnects
Info::
✓
Page uses 6 resource hint(s)
Current Resource Hints
preconnect
3
preload
3
dns-prefetch—
prefetch—
6 resource hints configured
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+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: IONOS SE
Network Waterfall
130 requests over 8940ms
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-party8830ms · 496KB · €37/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.ionos.fr
www.ionos.fr
Other
2608ms
23 KB
—
€11/mo
Costly
www.ionos.fr
www.ionos.fr
Other
2273ms
64 KB
32%
€10/mo
Costly
www.ionos.fr
www.ionos.fr
Other
1202ms
83 KB
—
€5/mo
Costly
Unattributable
Unattributable
Other
1132ms
0 KB
—
€5/mo
Costly
www.ionos.fr
www.ionos.fr
Other
282ms
5 KB
—
€1/mo
Costly
www.ionos.fr
www.ionos.fr
Other
279ms
4 KB
—
€1/mo
Costly
948si5.ionos.fr
948si5.ionos.fr
Other
164ms
74 KB
37%
€1/mo
Optional
www.ionos.fr
www.ionos.fr
Other
162ms
4 KB
—
€1/mo
Optional
cdn.ionos.fr
cdn.ionos.fr
Other
140ms
61 KB
—
€1/mo
Optional
www.ionos.fr
www.ionos.fr
Other
137ms
46 KB
—
€1/mo
Optional
var.uicdn.net
var.uicdn.net
Other
131ms
73 KB
44%
€1/mo
Optional
www.ionos.fr
www.ionos.fr
Other
103ms
8 KB
—
€0/mo
Optional
www.ionos.fr
www.ionos.fr
Other
78ms
1 KB
—
€0/mo
Optional
frontend-services.ionos.com
frontend-services.ionos.com
Other
70ms
21 KB
—
€0/mo
Optional
frontend-services.ionos.com
frontend-services.ionos.com
Other
68ms
29 KB
—
€0/mo
Optional
www.ionos.fr
Other
Costly
Execution2608ms
Transfer23 KB
Monthly Cost€11/mo
www.ionos.fr
Other
Costly
Execution2273ms
Transfer64 KB
Unused32%
Monthly Cost€10/mo
www.ionos.fr
Other
Costly
Execution1202ms
Transfer83 KB
Monthly Cost€5/mo
Unattributable
Other
Costly
Execution1132ms
Transfer0 KB
Monthly Cost€5/mo
www.ionos.fr
Other
Costly
Execution282ms
Transfer5 KB
Monthly Cost€1/mo
www.ionos.fr
Other
Costly
Execution279ms
Transfer4 KB
Monthly Cost€1/mo
948si5.ionos.fr
Other
Optional
Execution164ms
Transfer74 KB
Unused37%
Monthly Cost€1/mo
www.ionos.fr
Other
Optional
Execution162ms
Transfer4 KB
Monthly Cost€1/mo
cdn.ionos.fr
Other
Optional
Execution140ms
Transfer61 KB
Monthly Cost€1/mo
www.ionos.fr
Other
Optional
Execution137ms
Transfer46 KB
Monthly Cost€1/mo
var.uicdn.net
Other
Optional
Execution131ms
Transfer73 KB
Unused44%
Monthly Cost€1/mo
www.ionos.fr
Other
Optional
Execution103ms
Transfer8 KB
Monthly Cost€0/mo
www.ionos.fr
Other
Optional
Execution78ms
Transfer1 KB
Monthly Cost€0/mo
frontend-services.ionos.com
Other
Optional
Execution70ms
Transfer21 KB
Monthly Cost€0/mo
frontend-services.ionos.com
Other
Optional
Execution68ms
Transfer29 KB
Monthly Cost€0/mo
These scripts may cost more than they're worth
www.ionos.fr adds 2608ms and costs ~€11/month
www.ionos.fr adds 2273ms and costs ~€10/month
www.ionos.fr adds 1202ms and costs ~€5/month
Unattributable adds 1132ms and costs ~€5/month
www.ionos.fr adds 282ms and costs ~€1/month
www.ionos.fr adds 279ms and costs ~€1/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
www.ionos.fr takes 2608ms 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.ionos.fr takes 2273ms 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.ionos.fr takes 1202ms 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
Unattributable takes 1132ms 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.ionos.fr takes 282ms 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.ionos.fr takes 279ms 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.