JavaScript is 669 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 669 KB
Info::
i
54 HTTP requests
Info::
i
Estimated 0.19 g CO2 per page load
934 KBtransferred
54 requests
0.19 g CO2 per page load
JavaScript668.5 KiB72%
Fonts99.1 KiB11%
Images66.5 KiB7%
CSS64.5 KiB7%
Other25.9 KiB3%
HTML8.0 KiB1%
Other570 B0%
Other550 B0%
Other287 B0%
02.4 MB4.9 MB
Under budget
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Why this matters
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
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
3 fonts (99 KB)
PASS
3 fonts (99 KB)
Info::
i
3 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
3
99 KB total
Render-blocking
0
of 3
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
4Ua_rENHsxJlGDuGo1OIlJf...woff2swap
Size22 KB
Load time28 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
memvYaGs126MiZpBA-UvWbX...woff2swap
Size42 KB
Load time35 ms
Start1.9 s
RiskFOUT — text flashes from fallback to web font
4UasrENHsxJlGDuGo1OIlJf...woff2swap
Size35 KB
Load time35 ms
Start1.9 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
No optimization needed
PASS
No optimization needed
Info::
✓
No resource hint issues
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
54 requests over 2838ms
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-party1813ms · 549KB · €20/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.tapatalk.com
www.tapatalk.com
Other
384ms
8 KB
—
€4/mo
Costly
Google Tag Manager
www.googletagmanager.com
Tag Manager
337ms
149 KB
41%
€4/mo
Costly
fundingchoicesmessages.google.com
fundingchoicesmessages.google.com
Other
266ms
69 KB
—
€3/mo
Costly
Unattributable
Unattributable
Other
239ms
0 KB
—
€3/mo
Costly
fundingchoicesmessages.google.com
fundingchoicesmessages.google.com
Other
221ms
70 KB
52%
€2/mo
Costly
securepubads.g.doubleclick.net
securepubads.g.doubleclick.net
Other
203ms
187 KB
74%
€2/mo
Costly
www.googletagservices.com
www.googletagservices.com
Other
82ms
35 KB
—
€1/mo
Optional
www.tapatalk.com
www.tapatalk.com
Other
81ms
31 KB
—
€1/mo
Optional
www.tapatalk.com
Other
Costly
Execution384ms
Transfer8 KB
Monthly Cost€4/mo
Google Tag Manager
Tag Manager
Costly
Execution337ms
Transfer149 KB
Unused41%
Monthly Cost€4/mo
fundingchoicesmessages.google.com
Other
Costly
Execution266ms
Transfer69 KB
Monthly Cost€3/mo
Unattributable
Other
Costly
Execution239ms
Transfer0 KB
Monthly Cost€3/mo
fundingchoicesmessages.google.com
Other
Costly
Execution221ms
Transfer70 KB
Unused52%
Monthly Cost€2/mo
securepubads.g.doubleclick.net
Other
Costly
Execution203ms
Transfer187 KB
Unused74%
Monthly Cost€2/mo
www.googletagservices.com
Other
Optional
Execution82ms
Transfer35 KB
Monthly Cost€1/mo
www.tapatalk.com
Other
Optional
Execution81ms
Transfer31 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
www.tapatalk.com adds 384ms and costs ~€4/month
Google Tag Manager adds 337ms and costs ~€4/month
fundingchoicesmessages.google.com adds 266ms and costs ~€3/month
Unattributable adds 239ms and costs ~€3/month
fundingchoicesmessages.google.com adds 221ms and costs ~€2/month
securepubads.g.doubleclick.net adds 203ms 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
www.tapatalk.com takes 384ms 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 337ms 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
fundingchoicesmessages.google.com takes 266ms 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 239ms 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
fundingchoicesmessages.google.com takes 221ms 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 fundingchoicesmessages.google.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
securepubads.g.doubleclick.net takes 203ms 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
74% of securepubads.g.doubleclick.net'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.