Performance
· 26 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.
2.56 s
Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.
3.61 s
Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.
2.13 s
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.
5.48 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.
17.34 s
Page Load Progression
DPage Weight BudgetAction2.6 MB transferred, 58 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
FJS Execution CostAction5019ms total JS executionFIX
Main Thread Breakdown
| Script | Total | Scripting | Parse/Compile | Party |
|---|---|---|---|---|
| https://www.psicologi-italia.it/vendor/iwtemplate2020/js/app.js?vrid=0e6324dab1c838b4c0ddb95d8698ba43 | 2194ms | 1122ms | 742ms | 3rd |
| https://www.psicologi-italia.it/ | 1274ms | 139ms | 26ms | 3rd |
| Unattributable | 348ms | 20ms | 0ms | 1st |
| https://maps.googleapis.com/maps/api/js?key=AIzaSyDZ4QtA4v3LOpZ8GzPYpszUOnmSPktnJLk&libraries=places&callback=initGoogleAutocomplete | 303ms | 196ms | 98ms | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-16987521732&cx=c>m=4e67e1h2 | 280ms | 230ms | 48ms | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NVJRNBZ8 | 207ms | 168ms | 37ms | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 154ms | 113ms | 40ms | 3rd |
| https://connect.facebook.net/en_US/bundle/sdk.js/ | 97ms | 75ms | 21ms | 3rd |
| https://connect.facebook.net/signals/config/1335299428765167?v=2.9.353&r=stable&domain=www.psicologi-italia.it&hme=f29d86973612db0f0627890a64bdc8c47b471189050b33f2680b7d76997afc9a&ex_m=107%2C208%2C158%2C22%2C73%2C74%2C149%2C69%2C68%2C11%2C167%2C93%2C16%2C141%2C130%2C39%2C76%2C81%2C137%2C163%2C169%2C8%2C4%2C5%2C7%2C6%2C3%2C94%2C104%2C170%2C175%2C222%2C30%2C75%2C234%2C233%2C232%2C23%2C33%2C55%2C106%2C61%2C10%2C64%2C100%2C101%2C102%2C108%2C133%2C31%2C29%2C135%2C136%2C132%2C131%2C159%2C77%2C162%2C160%2C161%2C50%2C60%2C126%2C15%2C166%2C45%2C279%2C280%2C278%2C26%2C27%2C28%2C48%2C150%2C78%2C115%2C18%2C20%2C44%2C40%2C42%2C41%2C86%2C95%2C99%2C113%2C148%2C151%2C46%2C114%2C24%2C21%2C122%2C70%2C36%2C153%2C152%2C154%2C145%2C143%2C25%2C35%2C59%2C112%2C165%2C71%2C17%2C156%2C117%2C84%2C67%2C19%2C88%2C89%2C119%2C87%2C139%2C138%2C142%2C164%2C34%2C293%2C309%2C215%2C204%2C62%2C205%2C203%2C312%2C303%2C52%2C216%2C110%2C134%2C83%2C124%2C54%2C47%2C49%2C116%2C123%2C129%2C128%2C58%2C65%2C63%2C155%2C79%2C80%2C118%2C37%2C32%2C53%2C56%2C103%2C168%2C1%2C127%2C14%2C125%2C12%2C2%2C57%2C96%2C66%2C121%2C92%2C91%2C171%2C172%2C97%2C98%2C9%2C105%2C51%2C146%2C90%2C82%2C72%2C120%2C109%2C43%2C147%2C0%2C85%2C140%2C144%2C157%2C38%2C111%2C13%2C173 | 90ms | 76ms | 14ms | 3rd |
| https://www.psicologi-italia.it/js/app.js?vrid=ef403ca0b1bc7c2c5ddab58432fd202b | 71ms | 34ms | 10ms | 3rd |
FJS BundlesAction13 scripts, 800 KB unusedFIX
Downloaded but never executed on this page.
| Script | Size | Unused | Minified | Party |
|---|---|---|---|---|
| https://www.psicologi-italia.it/vendor/iwtemplate2020/js/app.js?vrid=0e6324dab1c838b4c0ddb95d8698ba43 | 894 KB | 370 KB (42%) | ✗ | 3rd |
| https://maps.googleapis.com/maps/api/js?key=AIzaSyDZ4QtA4v3LOpZ8GzPYpszUOnmSPktnJLk&libraries=places&callback=initGoogleAutocomplete | 366 KB | 204 KB (56%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtm.js?id=GTM-NVJRNBZ8 | 162 KB | 68 KB (42%) | ✓ | 3rd |
| https://www.googletagmanager.com/gtag/js?id=AW-16987521732&cx=c>m=4e67e1h2 | 150 KB | 66 KB (44%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/bundle/sdk.js/ | 78 KB | 54 KB (69%) | ✓ | 3rd |
| https://connect.facebook.net/en_US/fbevents.js | 99 KB | 38 KB (38%) | ✓ | 3rd |
| https://www.psicologi-italia.it/js/app.js?vrid=ef403ca0b1bc7c2c5ddab58432fd202b | 29 KB | — | ✓ | 3rd |
| https://connect.facebook.net/en_US/sdk.js | 5 KB | — | ✓ | 3rd |
| https://www.psicologi-italia.it/vendor/iwtemplate2020/js/vendor.js?vrid=0e6324dab1c838b4c0ddb95d8698ba43 | 1 KB | — | ✓ | 3rd |
| https://diffuser-cdn.app-us1.com/diffuser/diffuser.js | 8 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 InventoryAction58 resources · 2.6 MB · 800 KB savings availableFIX
~800.3 KiB of savings available
| # | Resource | Type | Size | Cache | Unused | 3rd party | Issues |
|---|---|---|---|---|---|---|---|
| — | — | ||||||
| 58 resources | 2.6 MiB | ||||||
FHTTP CachingActionNo cache headersFIX
No Cache-Control header
Adding a Cache-Control header can significantly improve repeat-visit performance.
BImage Optimization27 images, 0 KB saveableREVIEW
BHTTP/3 (QUIC)HTTP/3 not advertisedREVIEW
CCompression AlgorithmActionMain response served uncompressedREVIEW
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
A+Text CompressionAll text resources are compressedPASS
A+Font Loading7 fonts (159 KB)PASS
Web fonts
7
159 KB total
Render-blocking
0
of 7
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
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 Hints4 hints, 0 missing preconnectsPASS
Current Resource Hints
4 resource hints configured
A+LCP Image PreloadLCP preload audit not availablePASS
A+Server Response Intelligence1 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: Cloudflare
Network Waterfall58 requests over 3387msINFO
Third-Party Script CostPer-script blocking time, transfer cost, and cache headersINFO
| Script | Category | Execution | Transfer | Unused | Monthly Cost | Verdict |
|---|---|---|---|---|---|---|
www.psicologi-italia.it www.psicologi-italia.it | Other | 2194ms | 894 KB | 42% | €24/mo | Costly |
www.psicologi-italia.it www.psicologi-italia.it | Other | 1274ms | 15 KB | — | €14/mo | Costly |
maps.googleapis.com maps.googleapis.com | Other | 303ms | 366 KB | 56% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 280ms | 150 KB | 44% | €3/mo | Costly |
Google Tag Manager www.googletagmanager.com | Tag Manager | 207ms | 162 KB | 42% | €2/mo | Costly |
Facebook Pixel connect.facebook.net | Advertising | 154ms | 99 KB | 38% | €2/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 97ms | 78 KB | 69% | €1/mo | Optional |
Facebook Pixel connect.facebook.net | Advertising | 90ms | 32 KB | — | €1/mo | Optional |
www.psicologi-italia.it www.psicologi-italia.it | Other | 71ms | 29 KB | — | €1/mo | Optional |
These scripts may cost more than they're worth
- www.psicologi-italia.it adds 2194ms and costs ~€24/month
- www.psicologi-italia.it adds 1274ms and costs ~€14/month
- maps.googleapis.com adds 303ms and costs ~€3/month
- Google Tag Manager adds 280ms and costs ~€3/month
- Google Tag Manager adds 207ms and costs ~€2/month
93% 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
www.psicologi-italia.it takes 2194ms 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.psicologi-italia.it takes 1274ms 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
maps.googleapis.com takes 303ms 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
56% of maps.googleapis.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
Google Tag Manager takes 280ms 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 207ms 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
69% 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
Image Optimization41 images, 495 KB total, 11 KB wastedINFO
Image Optimization Audit
Total Images
41
Total Size
495 KB
Oversized
2
Wasted
11 KB