Performance
· 27 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.
11.18 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
20.63 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
906 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.000
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
12.56 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.
21.12 s
Page Load Progression
FPage Weight BudgetAction4.3 MB transferred, 57 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
FJS Execution CostAction4844ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/vendor/swiper/js/swiper-bundle.min.js | 1503ms | 850ms | 17ms | 1st |
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 1275ms | 937ms | 142ms | 3rd |
| Unattributable | 625ms | 10ms | 0ms | 1st |
| https://mediasetitalia.com/ | 461ms | 26ms | 5ms | 1st |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/vendor/fontawesome/js/all.min.js | 337ms | 113ms | 223ms | 1st |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/vendor/jquery/jquery.js | 317ms | 207ms | 58ms | 1st |
| https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js | 101ms | 50ms | 50ms | 3rd |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/vendor/lazysizes/lazysizes.min.js | 99ms | 20ms | 1ms | 1st |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/js/news24_loader.js | 72ms | 58ms | 0ms | 1st |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/vendor/handlebars/handlebars.js | 55ms | 23ms | 32ms | 1st |
FJS BundlesAction18 scripts, 732 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 0 KB | 186 KB (50%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 374 KB | 186 KB (50%) | ✓ | 3rd |
| https://www.gstatic.com/recaptcha/releases/rL1ELiQAg1kPezz6_H9hTZ_i/recaptcha__en.js | 375 KB | 186 KB (50%) | ✓ | 3rd |
| https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js | 94 KB | 77 KB (83%) | ✓ | 3rd |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/vendor/jquery/jquery.js | 91 KB | 45 KB (50%) | ✗ | 1st |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/vendor/handlebars/handlebars.js | 43 KB | 28 KB (67%) | ✗ | 1st |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/vendor/swiper/js/swiper-bundle.min.js | 38 KB | 22 KB (58%) | ✓ | 1st |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/js/news24_loader.js | 1 KB | — | ✓ | 1st |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/js/navbar.js | 2 KB | — | ✓ | 1st |
| https://mediasetitalia.com/wp-content/themes/mediasetitalia-theme/assets/js/main.js | 2 KB | — | ✓ | 1st |
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
DPage Weight InventoryAction57 resources · 4.3 MB · 732 KB savings availableFIX
~731.5 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 57 resources | 4.3 MiB | ||||||
DHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction19 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
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
BCompression AlgorithmMain response uses gzip; brotli would be ~20% smallerREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
BJavaScript Blocking2 JS blocking issue(s) detectedREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
AThird-Party Impact24% third-party, 0 ms blockingPASS
A+Text CompressionAll text resources are compressedPASS
A+Font Loading2 fonts (69 KB)PASS
Web fonts
2
69 KB total
Render-blocking
0
of 2
Dominant font-display
swap
Most common across fonts
Font loading timeline
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 CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource Hints2 hints, 0 missing preconnectsPASS
Current Resource Hints
2 resource hints configured
A+LCP Image PreloadLCP preload audit not availablePASS
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
ACSS Performance Depth1 CSS depth issue(s) detectedPASS
Network Waterfall57 requests over 2053msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.gstatic.com www.gstatic.com | Other | 1275ms | 0 KB | 50% | €14/mo | Costly |
cdnjs cdnjs.cloudflare.com | CDN | 101ms | 94 KB | 83% | €1/mo | Optional |
These scripts may cost more than they're worth
- www.gstatic.com adds 1275ms and costs ~€14/month
www.gstatic.com takes 1275ms 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
83% of cdnjs'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 (2026-06-11 — 2026-07-08)
LCP (p75)
1491 ms
88% good
INP (p75)
108 ms
88% good
CLS (p75)
0.020
90% good
FCP (p75)
1420 ms
TTFB (p75)
403 ms
Image Optimization23 images, 3541 KB total, 2235 KB wastedINFO
Image Optimization Audit
Total Images
23
Total Size
3541 KB
Oversized
7
Wasted
2235 KB