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.
C
Image Optimization
Action
15 images, 0 KB saveable
REVIEW
15 images, 0 KB saveable
Warning::
!
https://www.rainews.it/assets/img/google-play-2.pn... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
!
https://www.rainews.it/assets/img/app-store-2.png is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
15images103 KB
0oversized-0 KB
8legacy format
2missing dimensionsCLS risk
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
Set explicit width and height to prevent CLS.
Why this matters
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW
Green Hosting
No green hosting detected
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
11 fonts (316 KB)
PASS
11 fonts (316 KB)
Info::
i
11 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
11
316 KB total
Render-blocking
0
of 11
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
rai24.woffwoffswap
Size24 KB
Load time44 ms
Start805 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
u-4e0qyriQwlOrhSvowK_l5...woff2swap
Size95 KB
Load time43 ms
Start1.0 s
RiskFOUT — text flashes from fallback to web font
6xK3dSBYKcSV-LCoeQqfX1R...woff2swap
Size15 KB
Load time38 ms
Start1.0 s
RiskFOUT — text flashes from fallback to web font
6xKydSBYKcSV-LCoeQqfX1R...woff2swap
Size15 KB
Load time35 ms
Start1.0 s
RiskFOUT — text flashes from fallback to web font
6xKydSBYKcSV-LCoeQqfX1R...woff2swap
Size14 KB
Load time26 ms
Start1.0 s
RiskFOUT — text flashes from fallback to web font
6xKwdSBYKcSV-LCoeQqfX1R...woff2swap
Size14 KB
Load time20 ms
Start1.0 s
RiskFOUT — text flashes from fallback to web font
6xK1dSBYKcSV-LCoeQqfX1R...woff2swap
Size14 KB
Load time39 ms
Start1.0 s
RiskFOUT — text flashes from fallback to web font
Inter.woff2woff2swap
Size0 KB
Load time632 ms
Start1.4 s
RiskFOUT — text flashes from fallback to web font
u-4c0qyriQwlOrhSvowK_l5...woff2swap
Size98 KB
Load time13 ms
Start1.7 s
RiskFOUT — text flashes from fallback to web font
font-woff;charset=utf-8...woffswap
Size8 KB
Load time37 ms
Start4.5 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Montserrat-SemiBold.woff2woff2swap
Size19 KB
Load time26 ms
Start4.5 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 ~9 KB and ~18 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
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
Network Waterfall
99 requests over 4721ms
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-party12708ms · 2073KB · €138/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.rainews.it
www.rainews.it
Other
3890ms
188 KB
—
€42/mo
Costly
Unattributable
Unattributable
Other
1281ms
0 KB
—
€14/mo
Costly
www.rainews.it
www.rainews.it
Other
1122ms
659 KB
79%
€12/mo
Costly
www.rainews.it
www.rainews.it
Other
1110ms
68 KB
38%
€12/mo
Costly
www.rainews.it
www.rainews.it
Other
1077ms
0 KB
—
€12/mo
Costly
www.rainews.it
www.rainews.it
Other
495ms
112 KB
52%
€5/mo
Costly
www.rainews.it
www.rainews.it
Other
488ms
79 KB
65%
€5/mo
Costly
www.rainews.it
www.rainews.it
Other
479ms
684 KB
9%
€5/mo
Costly
imasdk.googleapis.com
imasdk.googleapis.com
Other
438ms
0 KB
74%
€5/mo
Costly
www.rainews.it
www.rainews.it
Other
397ms
0 KB
—
€4/mo
Costly
www.rainews.it
www.rainews.it
Other
345ms
6 KB
—
€4/mo
Costly
www.rainews.it
www.rainews.it
Other
246ms
9 KB
—
€3/mo
Costly
www.rainews.it
www.rainews.it
Other
220ms
29 KB
—
€2/mo
Costly
www.rainews.it
www.rainews.it
Other
204ms
0 KB
45%
€2/mo
Costly
cdn-gl.imrworldwide.com
cdn-gl.imrworldwide.com
Other
204ms
73 KB
54%
€2/mo
Costly
www.rainews.it
www.rainews.it
Other
203ms
1 KB
—
€2/mo
Costly
www.rainews.it
www.rainews.it
Other
201ms
41 KB
—
€2/mo
Costly
www.rainews.it
www.rainews.it
Other
113ms
53 KB
49%
€1/mo
Optional
cdn-gl.imrworldwide.com
cdn-gl.imrworldwide.com
Other
72ms
7 KB
—
€1/mo
Optional
www.rainews.it
www.rainews.it
Other
65ms
49 KB
—
€1/mo
Optional
www.rainews.it
www.rainews.it
Other
58ms
15 KB
—
€1/mo
Optional
www.rainews.it
Other
Costly
Execution3890ms
Transfer188 KB
Monthly Cost€42/mo
Unattributable
Other
Costly
Execution1281ms
Transfer0 KB
Monthly Cost€14/mo
www.rainews.it
Other
Costly
Execution1122ms
Transfer659 KB
Unused79%
Monthly Cost€12/mo
www.rainews.it
Other
Costly
Execution1110ms
Transfer68 KB
Unused38%
Monthly Cost€12/mo
www.rainews.it
Other
Costly
Execution1077ms
Transfer0 KB
Monthly Cost€12/mo
www.rainews.it
Other
Costly
Execution495ms
Transfer112 KB
Unused52%
Monthly Cost€5/mo
www.rainews.it
Other
Costly
Execution488ms
Transfer79 KB
Unused65%
Monthly Cost€5/mo
www.rainews.it
Other
Costly
Execution479ms
Transfer684 KB
Unused9%
Monthly Cost€5/mo
imasdk.googleapis.com
Other
Costly
Execution438ms
Transfer0 KB
Unused74%
Monthly Cost€5/mo
www.rainews.it
Other
Costly
Execution397ms
Transfer0 KB
Monthly Cost€4/mo
www.rainews.it
Other
Costly
Execution345ms
Transfer6 KB
Monthly Cost€4/mo
www.rainews.it
Other
Costly
Execution246ms
Transfer9 KB
Monthly Cost€3/mo
www.rainews.it
Other
Costly
Execution220ms
Transfer29 KB
Monthly Cost€2/mo
www.rainews.it
Other
Costly
Execution204ms
Transfer0 KB
Unused45%
Monthly Cost€2/mo
cdn-gl.imrworldwide.com
Other
Costly
Execution204ms
Transfer73 KB
Unused54%
Monthly Cost€2/mo
www.rainews.it
Other
Costly
Execution203ms
Transfer1 KB
Monthly Cost€2/mo
www.rainews.it
Other
Costly
Execution201ms
Transfer41 KB
Monthly Cost€2/mo
www.rainews.it
Other
Optional
Execution113ms
Transfer53 KB
Unused49%
Monthly Cost€1/mo
cdn-gl.imrworldwide.com
Other
Optional
Execution72ms
Transfer7 KB
Monthly Cost€1/mo
www.rainews.it
Other
Optional
Execution65ms
Transfer49 KB
Monthly Cost€1/mo
www.rainews.it
Other
Optional
Execution58ms
Transfer15 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
www.rainews.it adds 3890ms and costs ~€42/month
Unattributable adds 1281ms and costs ~€14/month
www.rainews.it adds 1122ms and costs ~€12/month
www.rainews.it adds 1110ms and costs ~€12/month
www.rainews.it adds 1077ms and costs ~€12/month
www.rainews.it adds 495ms and costs ~€5/month
www.rainews.it adds 488ms and costs ~€5/month
www.rainews.it adds 479ms and costs ~€5/month
imasdk.googleapis.com adds 438ms and costs ~€5/month
www.rainews.it adds 397ms and costs ~€4/month
www.rainews.it adds 345ms and costs ~€4/month
www.rainews.it adds 246ms and costs ~€3/month
www.rainews.it adds 220ms and costs ~€2/month
www.rainews.it adds 204ms and costs ~€2/month
cdn-gl.imrworldwide.com adds 204ms and costs ~€2/month
www.rainews.it adds 203ms and costs ~€2/month
www.rainews.it adds 201ms 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.rainews.it takes 3890ms 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 1281ms 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.rainews.it takes 1122ms 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
79% of www.rainews.it'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.rainews.it takes 1110ms 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.rainews.it takes 1077ms 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.rainews.it takes 495ms 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.rainews.it'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.rainews.it takes 488ms 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
65% of www.rainews.it'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.rainews.it takes 479ms 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
imasdk.googleapis.com takes 438ms 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 imasdk.googleapis.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.rainews.it takes 397ms 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.rainews.it takes 345ms 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.rainews.it takes 246ms 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.rainews.it takes 220ms 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.rainews.it takes 204ms 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-gl.imrworldwide.com takes 204ms 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
54% of cdn-gl.imrworldwide.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.rainews.it 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
www.rainews.it takes 201ms 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.