Performance
· 28 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.Performance-focused optimization plan with CWV assessment, top offenders, and time estimates
First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.
2.00 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.96 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
412 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.321
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.11 s
Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.
15.81 s
Page Load Progression
FPage Weight BudgetAction3.0 MB transferred, 74 requestsFIX
Convert images to WebP/AVIF and resize to display dimensions to reduce transfer size.
Image bandwidth is high — modern formats (WebP/AVIF) and resizing typically cut it 50%+.
Source: web.dev
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.
Source: web.dev
DThird-Party ImpactAction74% third-party, 0 ms blockingFIX
DJS Execution CostAction2618ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.reteassociazioni.it/ | 708ms | 19ms | 6ms | 1st |
| https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.105.0/core-it.js | 437ms | 319ms | 51ms | 3rd |
| Unattributable | 429ms | 9ms | 0ms | 1st |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-4770798300388127 | 206ms | 181ms | 16ms | 3rd |
| https://www.gstatic.com/recaptcha/releases/8x-4t2pegToiW8KmThtO4AQt/recaptcha__en.js | 192ms | 109ms | 82ms | 3rd |
| https://connect.facebook.net/it_IT/all.js?hash=cd823ed1addda6a58fbdc4873818a65b | 186ms | 144ms | 31ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-K6PC87R | 180ms | 131ms | 47ms | 3rd |
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202609030101/show_ads_impl_fy2021.js | 160ms | 106ms | 53ms | 3rd |
| https://www.reteassociazioni.it/assets/application-aacc84bad66158d53bf531723a00c993.js | 122ms | 83ms | 20ms | 1st |
FJS BundlesAction25 scripts, 627 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/8x-4t2pegToiW8KmThtO4AQt/recaptcha__en.js | 345 KB | 247 KB (72%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202609030101/show_ads_impl_fy2021.js | 163 KB | 134 KB (82%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-K6PC87R | 121 KB | 70 KB (59%) | ✓ | 3rd |
| https://connect.facebook.net/it_IT/all.js?hash=cd823ed1addda6a58fbdc4873818a65b | 85 KB | 56 KB (65%) | ✓ | 3rd |
| https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.105.0/core-it.js | 112 KB | 52 KB (47%) | ✓ | 3rd |
| https://www.reteassociazioni.it/assets/application-aacc84bad66158d53bf531723a00c993.js | 73 KB | 47 KB (64%) | ✓ | 1st |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-4770798300388127 | 57 KB | 22 KB (39%) | ✓ | 3rd |
| https://cdn.iubenda.com/iubenda.js | 7 KB | — | ✓ | 3rd |
| https://static.xx.fbcdn.net/rsrc.php/v4/y7/r/1fPb3a5sFVt.js | 99 KB | — | ✓ | 3rd |
| https://connect.facebook.net/it_IT/all.js | 2 KB | — | ✓ | 3rd |
Consider code splitting or tree shaking to reduce unused code.
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.
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.
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.
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.
This bundle has high unused code — code-split or tree-shake to ship only what executes.
Source: web.dev / Lighthouse coverage
FPage Weight InventoryAction74 resources · 3.0 MB · 627 KB savings availableFIX
~627.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 74 resources | 3.0 MiB | ||||||
CImage OptimizationAction38 images, 0 KB saveableREVIEW
Set explicit width and height to prevent CLS.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Image without explicit width/height — browser can't reserve space; CLS jumps when image loads.
Source: web.dev / Core Web Vitals
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BDocument CompressionDocument response uses gzip; brotli would be ~20% smallerREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
BHTTP Cachingmax-age=0, private, must-revalidateREVIEW
max-age=0, private, must-revalidate
| Directive | Value | Meaning |
|---|---|---|
| max-age | 0 | Cache for 0 seconds |
| private | — | Only browser cache, not CDN/proxy |
| must-revalidate | — | Must recheck with server after expiry |
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (42 KB)PASS
Web fonts
2
42 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+Asset CompressionAll 1 asset host use brotliPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Main HTML Cache-ControlMain HTML max-age=0 (≤ 5min) is appropriatePASS
A+Server Response Intelligence2 server-response signal(s) detectedPASS
A+Render-Blocking ResourcesNo render-blocking resources detectedPASS
A+Third-Party ResourcesNo third-party resources detectedPASS
A+CSS Performance DepthNo CSS performance depth issues detectedPASS
A+Green HostingWhether the site is served from green-energy infrastructurePASS
Green Hosting
This site is hosted on green energy infrastructure
Provider: OVHcloud
Network Waterfall74 requests over 2602msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
Iubenda cdn.iubenda.com | Consent | 437ms | 112 KB | 47% | €5/mo | Essential |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 206ms | 57 KB | 39% | €2/mo | Costly |
www.gstatic.com www.gstatic.com | Other | 192ms | 345 KB | 72% | €2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 186ms | 85 KB | 65% | €2/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 180ms | 121 KB | 59% | €2/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 160ms | 163 KB | 82% | €2/mo | Optional |
These scripts may cost more than they're worth
- pagead2.googlesyndication.com adds 206ms and costs ~€2/month
52% of JavaScript execution time comes from third-party scripts.
Third-party scripts (analytics, ads, social, A/B testing) often dominate execution time — every one is a perf-and-privacy tax.
Learn more ▾ ▴
Each third-party script is a black box: you don't control when it loads, what it executes, or how much it grows. They often account for a major share of total blocking time on average sites (HTTP Archive's Web Almanac documents the trend). Audit which ones you actually need, defer the rest, and use facade patterns (lite-youtube, lite-vimeo) for embedded media.
Source: web.dev / HTTP Archive Web Almanac
pagead2.googlesyndication.com takes 206ms of CPU time. Consider loading it asynchronously or replacing it with a lighter alternative.
This script has high main-thread execution time — optimize hot paths or defer.
Source: web.dev
72% of www.gstatic.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
65% of Facebook Pixel's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
59% of Google Tag Manager's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
82% of pagead2.googlesyndication.com's code is unused. The script may be loading features you don't use.
Bundle has high unused-code ratio — tree-shaking and route-splitting recover the wasted bytes.
Source: web.dev
Real-User Performance (CrUX)Field metrics from the Chrome User Experience ReportINFO
Chrome User Experience (CrUX)
Real-user metrics from the Chrome UX Report (2026-08-11 — 2026-09-07)
LCP (p75)
1655 ms
85% good
INP (p75)
77 ms
96% good
CLS (p75)
0.000
84% good
FCP (p75)
1362 ms
TTFB (p75)
774 ms
Image Optimization37 images, 650 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
37
Total Size
650 KB