Browsers will use heuristic caching, which can be unpredictable. Set explicit cache headers.
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
B
Image Optimization
25 images, 0 KB saveable
REVIEW
25 images, 0 KB saveable
Info::
✓
All images are well-optimized
25images17.5 MB
0oversized-0 KB
11legacy format
0missing dimensionsCLS risk
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
5 fonts (4082 KB)
PASS
5 fonts (4082 KB)
Info::
i
5 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
5
4082 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
e4af272ccee01ff0-s.p.woff2woff2swap
Size48 KB
Load time105 ms
Start745 ms
RiskFOUT — text flashes from fallback to web font
58f00d2219f5e110-s.p.ttfttfswap
Size69 KB
Load time107 ms
Start746 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
ddf52e3354263f0b-s.p.ttfttfswap
Size71 KB
Load time122 ms
Start746 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
b3b32643e73e0a8d-s.p.ttfttfswap
Size77 KB
Load time123 ms
Start747 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
kJEhBvYX7BgnkSrUwT8Ohrd...woff2swap
Size3817 KB
Load time375 ms
Start1.1 s
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
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 ~1974 KB and ~3948 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::
✓
Page uses 9 resource hint(s)
Current Resource Hints
preconnect
1
preload
8
dns-prefetch—
prefetch—
9 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: Cloudflare
Network Waterfall
91 requests over 3420ms
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-party7618ms · 4675KB · €122/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.flytap.com
www.flytap.com
Other
1942ms
1789 KB
12%
€31/mo
Costly
www.flytap.com
www.flytap.com
Other
1166ms
57 KB
36%
€19/mo
Costly
Unattributable
Unattributable
Other
768ms
0 KB
—
€12/mo
Costly
www.flytap.com
www.flytap.com
Other
622ms
1424 KB
59%
€10/mo
Costly
www.flytap.com
www.flytap.com
Other
570ms
96 KB
—
€9/mo
Costly
www.flytap.com
www.flytap.com
Other
540ms
109 KB
52%
€9/mo
Costly
www.flytap.com
www.flytap.com
Other
387ms
428 KB
60%
€6/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
259ms
170 KB
39%
€4/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
238ms
146 KB
45%
€4/mo
Costly
Bing UET
bat.bing.com
Advertising
213ms
15 KB
—
€3/mo
Costly
www.flytap.com
www.flytap.com
Other
190ms
0 KB
—
€3/mo
Optional
cdn.engagement.coremedia.cloud
cdn.engagement.coremedia.cloud
Other
183ms
30 KB
—
€3/mo
Optional
Google Tag Manager
www.googletagmanager.com
Tag Manager
167ms
167 KB
40%
€3/mo
Optional
www.flytap.com
www.flytap.com
Other
140ms
20 KB
—
€2/mo
Optional
www.flytap.com
www.flytap.com
Other
95ms
37 KB
—
€2/mo
Optional
OneTrust
cdn.cookielaw.org
Consent
74ms
115 KB
53%
€1/mo
Essential
www.flytap.com
www.flytap.com
Other
64ms
71 KB
44%
€1/mo
Optional
www.flytap.com
Other
Costly
Execution1942ms
Transfer1789 KB
Unused12%
Monthly Cost€31/mo
www.flytap.com
Other
Costly
Execution1166ms
Transfer57 KB
Unused36%
Monthly Cost€19/mo
Unattributable
Other
Costly
Execution768ms
Transfer0 KB
Monthly Cost€12/mo
www.flytap.com
Other
Costly
Execution622ms
Transfer1424 KB
Unused59%
Monthly Cost€10/mo
www.flytap.com
Other
Costly
Execution570ms
Transfer96 KB
Monthly Cost€9/mo
www.flytap.com
Other
Costly
Execution540ms
Transfer109 KB
Unused52%
Monthly Cost€9/mo
www.flytap.com
Other
Costly
Execution387ms
Transfer428 KB
Unused60%
Monthly Cost€6/mo
Google Tag Manager
Tag Manager
Costly
Execution259ms
Transfer170 KB
Unused39%
Monthly Cost€4/mo
Google Tag Manager
Tag Manager
Costly
Execution238ms
Transfer146 KB
Unused45%
Monthly Cost€4/mo
Bing UET
Advertising
Costly
Execution213ms
Transfer15 KB
Monthly Cost€3/mo
www.flytap.com
Other
Optional
Execution190ms
Transfer0 KB
Monthly Cost€3/mo
cdn.engagement.coremedia.cloud
Other
Optional
Execution183ms
Transfer30 KB
Monthly Cost€3/mo
Google Tag Manager
Tag Manager
Optional
Execution167ms
Transfer167 KB
Unused40%
Monthly Cost€3/mo
www.flytap.com
Other
Optional
Execution140ms
Transfer20 KB
Monthly Cost€2/mo
www.flytap.com
Other
Optional
Execution95ms
Transfer37 KB
Monthly Cost€2/mo
OneTrust
Consent
Essential
Execution74ms
Transfer115 KB
Unused53%
Monthly Cost€1/mo
www.flytap.com
Other
Optional
Execution64ms
Transfer71 KB
Unused44%
Monthly Cost€1/mo
These scripts may cost more than they're worth
www.flytap.com adds 1942ms and costs ~€31/month
www.flytap.com adds 1166ms and costs ~€19/month
Unattributable adds 768ms and costs ~€12/month
www.flytap.com adds 622ms and costs ~€10/month
www.flytap.com adds 570ms and costs ~€9/month
www.flytap.com adds 540ms and costs ~€9/month
www.flytap.com adds 387ms and costs ~€6/month
Google Tag Manager adds 259ms and costs ~€4/month
Google Tag Manager adds 238ms and costs ~€4/month
Bing UET adds 213ms and costs ~€3/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.flytap.com takes 1942ms 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.flytap.com takes 1166ms 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 768ms 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.flytap.com takes 622ms 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
59% of www.flytap.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
www.flytap.com takes 570ms 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.flytap.com takes 540ms 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 www.flytap.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
www.flytap.com takes 387ms 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
60% of www.flytap.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
Google Tag Manager takes 259ms 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
Google Tag Manager takes 238ms 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
Bing UET takes 213ms 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
53% of OneTrust'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.