Performance
· 23 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.
998 ms
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
1.38 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
353 ms
Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.
0.074
Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.
4.04 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.
4.37 s
Page Load Progression
DPage Weight BudgetAction2.4 MB transferred, 91 requestsFIX
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 ImpactAction100% third-party, 0 ms blockingFIX
DJS Execution CostAction2295ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202609100101/show_ads_impl_fy2021.js | 497ms | 352ms | 25ms | 3rd |
| https://www.vocedeicittadini.it/wp-content/cache/wpo-minify/1789472840/assets/wpo-minify-header-f5371779.min.js | 442ms | 239ms | 5ms | 3rd |
| https://www.vocedeicittadini.it/ | 369ms | 7ms | 3ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-K8DV8TN | 237ms | 182ms | 40ms | 3rd |
| https://fundingchoicesmessages.google.com/i/ca-pub-3451045666022253?href=https%3A%2F%2Fwww.vocedeicittadini.it&ers=2 | 216ms | 158ms | 9ms | 3rd |
| Unattributable | 202ms | 5ms | 0ms | 1st |
| https://accounts.google.com/gsi/client | 108ms | 67ms | 17ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-3451045666022253&cx=c>m=4e69b1h1 | 99ms | 81ms | 17ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-255362513&cx=c>m=4e69b1 | 75ms | 60ms | 15ms | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js?client=ca-pub-3451045666022253&host=ca-host-pub-2644536267352236 | 51ms | 42ms | 8ms | 3rd |
FJS BundlesAction30 scripts, 1007 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.googletagmanager.com/gtag/js?id=GT-K8DV8TN&cx=c>m=4e69b1h1 | 191 KB | 125 KB (65%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-5ZGJCJ6ZDX&cx=c>m=4e69b1h1 | 191 KB | 125 KB (65%) | ✓ | 3rd |
| https://www.vocedeicittadini.it/wp-content/cache/wpo-minify/1789472840/assets/wpo-minify-footer-fdec155c.min.js | 96 KB | 89 KB (93%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/managed/js/adsense/m202609100101/show_ads_impl_fy2021.js | 163 KB | 79 KB (48%) | ✓ | 3rd |
| https://accounts.google.com/gsi/client | 100 KB | 78 KB (78%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=G-255362513&cx=c>m=4e69b1 | 147 KB | 70 KB (47%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-PD88XF6 | 115 KB | 69 KB (60%) | ✓ | 3rd |
| https://pagead2.googlesyndication.com/pagead/js/lidar.js?fcd=true | 84 KB | 66 KB (78%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=GT-K8DV8TN | 192 KB | 63 KB (33%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-3451045666022253&cx=c>m=4e69b1h1 | 146 KB | 60 KB (41%) | ✓ | 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 InventoryAction91 resources · 2.4 MB · 1007 KB savings availableFIX
~1007.0 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 91 resources | 2.4 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
CImage OptimizationAction18 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
CDocument CompressionActionDocument response served uncompressedREVIEW
CAsset CompressionAction1 of 4 asset hosts serve text uncompressedREVIEW
BMain HTML Cache-ControlNo Cache-Control header on main HTML responseREVIEW
BServer-Timing ObservabilityNo Server-Timing header foundREVIEW
CGreen HostingActionWhether the site is served from green-energy infrastructureREVIEW
Green Hosting
No green hosting detected
A+Text CompressionAll text resources are compressedPASS
A+Font Loading5 fonts (150 KB)PASS
Web fonts
5
150 KB total
Render-blocking
0
of 5
Dominant font-display
swap
Most common across fonts
Font loading timeline
- Convert to woff2 for ~30% smaller file size
- Convert to woff2 for ~30% smaller file size
- 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 ~17 KB and ~34 ms
A+Resource CachingAll resources properly cachedPASS
A+Critical Rendering PathNo render-blocking resourcesPASS
A+Resource HintsNo optimization neededPASS
A+HTTP/3 (QUIC)HTTP/3 advertised via Alt-SvcPASS
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 server-response signal(s) detectedPASS
Network Waterfall91 requests over 8661msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 497ms | 163 KB | 48% | €3/mo | Costly |
www.vocedeicittadini.it www.vocedeicittadini.it | Other | 442ms | 38 KB | — | €2/mo | Costly |
www.vocedeicittadini.it www.vocedeicittadini.it | Other | 369ms | 20 KB | — | €2/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 237ms | 192 KB | 33% | €1/mo | Costly |
fundingchoicesmessages.google.com fundingchoicesmessages.google.com | Other | 216ms | 71 KB | 51% | €1/mo | Costly |
accounts.google.com accounts.google.com | Other | 108ms | 100 KB | 78% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 99ms | 146 KB | 41% | €1/mo | Optional |
Google Tag Manager www.googletagmanager.com | Tag Manager | 75ms | 147 KB | 47% | €0/mo | Optional |
pagead2.googlesyndication.com pagead2.googlesyndication.com | Other | 51ms | 57 KB | 40% | €0/mo | Optional |
These scripts may cost more than they're worth
- pagead2.googlesyndication.com adds 497ms and costs ~€3/month
- www.vocedeicittadini.it adds 442ms and costs ~€2/month
- www.vocedeicittadini.it adds 369ms and costs ~€2/month
- Google Tag Manager adds 237ms and costs ~€1/month
- fundingchoicesmessages.google.com adds 216ms and costs ~€1/month
91% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.
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
pagead2.googlesyndication.com takes 497ms 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
www.vocedeicittadini.it takes 442ms 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
www.vocedeicittadini.it takes 369ms 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
Google Tag Manager takes 237ms 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
fundingchoicesmessages.google.com takes 216ms 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
51% of fundingchoicesmessages.google.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
78% of accounts.google.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
Image Optimization30 images, 57 KB total, 0 KB wastedINFO
Image Optimization Audit
Total Images
30
Total Size
57 KB