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
30 images, 0 KB saveable
REVIEW
30 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.
30images150 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
12 fonts (316 KB)
PASS
12 fonts (316 KB)
Info::
i
12 font(s) use font-display: swap (FOUT risk but functional)
Web fonts
12
316 KB total
Render-blocking
0
of 12
Dominant font-display
swap
Most common across fonts
Font loading timeline
TransferFOIT (block)FOUT (swap)
rai24.woffwoffswap
Size24 KB
Load time114 ms
Start966 ms
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
u-4e0qyriQwlOrhSvowK_l5...woff2swap
Size95 KB
Load time36 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
6xK3dSBYKcSV-LCoeQqfX1R...woff2swap
Size15 KB
Load time15 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
6xKydSBYKcSV-LCoeQqfX1R...woff2swap
Size15 KB
Load time19 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
6xKydSBYKcSV-LCoeQqfX1R...woff2swap
Size14 KB
Load time33 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
6xKwdSBYKcSV-LCoeQqfX1R...woff2swap
Size14 KB
Load time30 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
6xK1dSBYKcSV-LCoeQqfX1R...woff2swap
Size14 KB
Load time25 ms
Start1.2 s
RiskFOUT — text flashes from fallback to web font
Inter.woff2woff2swap
Size0 KB
Load time72 ms
Start1.7 s
RiskFOUT — text flashes from fallback to web font
u-4c0qyriQwlOrhSvowK_l5...woff2swap
Size98 KB
Load time16 ms
Start2.2 s
RiskFOUT — text flashes from fallback to web font
InterTight.woff2woff2swap
Size0 KB
Load time203 ms
Start3.3 s
RiskFOUT — text flashes from fallback to web font
font-woff;charset=utf-8...woffswap
Size8 KB
Load time46 ms
Start5.1 s
RiskFOUT — text flashes from fallback to web font
Convert to woff2 for ~30% smaller file size
Montserrat-SemiBold.woff2woff2swap
Size19 KB
Load time36 ms
Start5.1 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
Network Waterfall
117 requests over 6799ms
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-party3450ms · 1829KB · €37/mo
Script
Category
Execution
Transfer
Unused
Monthly Cost
Verdict
www.rainews.it
www.rainews.it
Other
1086ms
188 KB
—
€12/mo
Costly
Unattributable
Unattributable
Other
356ms
0 KB
—
€4/mo
Costly
www.rainews.it
www.rainews.it
Other
346ms
79 KB
65%
€4/mo
Costly
www.rainews.it
www.rainews.it
Other
324ms
68 KB
37%
€4/mo
Costly
www.rainews.it
www.rainews.it
Other
303ms
659 KB
79%
€3/mo
Costly
www.rainews.it
www.rainews.it
Other
277ms
0 KB
—
€3/mo
Costly
www.rainews.it
www.rainews.it
Other
167ms
684 KB
9%
€2/mo
Optional
www.rainews.it
www.rainews.it
Other
141ms
112 KB
52%
€2/mo
Optional
www.rainews.it
www.rainews.it
Other
125ms
9 KB
—
€1/mo
Optional
imasdk.googleapis.com
imasdk.googleapis.com
Other
107ms
0 KB
74%
€1/mo
Optional
www.rainews.it
www.rainews.it
Other
98ms
0 KB
—
€1/mo
Optional
www.rainews.it
www.rainews.it
Other
64ms
1 KB
—
€1/mo
Optional
www.rainews.it
www.rainews.it
Other
55ms
29 KB
—
€1/mo
Optional
www.rainews.it
Other
Costly
Execution1086ms
Transfer188 KB
Monthly Cost€12/mo
Unattributable
Other
Costly
Execution356ms
Transfer0 KB
Monthly Cost€4/mo
www.rainews.it
Other
Costly
Execution346ms
Transfer79 KB
Unused65%
Monthly Cost€4/mo
www.rainews.it
Other
Costly
Execution324ms
Transfer68 KB
Unused37%
Monthly Cost€4/mo
www.rainews.it
Other
Costly
Execution303ms
Transfer659 KB
Unused79%
Monthly Cost€3/mo
www.rainews.it
Other
Costly
Execution277ms
Transfer0 KB
Monthly Cost€3/mo
www.rainews.it
Other
Optional
Execution167ms
Transfer684 KB
Unused9%
Monthly Cost€2/mo
www.rainews.it
Other
Optional
Execution141ms
Transfer112 KB
Unused52%
Monthly Cost€2/mo
www.rainews.it
Other
Optional
Execution125ms
Transfer9 KB
Monthly Cost€1/mo
imasdk.googleapis.com
Other
Optional
Execution107ms
Transfer0 KB
Unused74%
Monthly Cost€1/mo
www.rainews.it
Other
Optional
Execution98ms
Transfer0 KB
Monthly Cost€1/mo
www.rainews.it
Other
Optional
Execution64ms
Transfer1 KB
Monthly Cost€1/mo
www.rainews.it
Other
Optional
Execution55ms
Transfer29 KB
Monthly Cost€1/mo
These scripts may cost more than they're worth
www.rainews.it adds 1086ms and costs ~€12/month
Unattributable adds 356ms and costs ~€4/month
www.rainews.it adds 346ms and costs ~€4/month
www.rainews.it adds 324ms and costs ~€4/month
www.rainews.it adds 303ms and costs ~€3/month
www.rainews.it adds 277ms 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.rainews.it takes 1086ms 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 356ms 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 346ms 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 324ms 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 303ms 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 277ms 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
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.