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Performance

· 28 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
5
REVIEW
7
PASS
12
INFO
4

Performance-focused optimization plan with CWV assessment, top offenders, and time estimates

Mobile Desktop
52
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
83
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
73
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

2.50 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

5.38 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

776 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.002

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

6.31 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.

16.32 s

Page Load Progression

375 ms
750 ms
1.1 s
1.5 s
1.9 s
2.2 s
2.6 s
3.0 s
Checks
28
12 PASS 7 REVIEW 5 FIX
D
Third-Party Impact
Action
84% third-party, 0 ms blocking
FIX
84% third-party, 0 ms blocking
Warning::
Third-party code accounts for 84% of page weight (1.6 MiB of 1.9 MiB)
Info::
Third-party blocking time is low (0 ms)
16%
84%
First-party Third-party
F
JS Execution Cost
Action
3894ms total JS execution
FIX
3894ms total JS execution
Warning::
https://www.gstatic.com/recaptcha/releases/bSuJ2xB...: 1184ms CPU time
Warning::
Unattributable: 579ms CPU time
Warning::
https://www.alessandrorosina.it/: 554ms CPU time
Warning::
https://cdn.iubenda.com/cookie_solution/iubenda_cs...: 443ms CPU time
Info::
https://www.googletagmanager.com/gtag/js?id=G-GV4W...: 247ms CPU time
Warning::
Third-party scripts: 2449ms (63% of total)

Main Thread Breakdown

Script Evaluation 61% Other 17% Style & Layout 8% Script Parsing & Compilation 8%
ScriptTotalScriptingParse/CompileParty
https://www.gstatic.com/recaptcha/releases/bSuJ2xBC8cFy7pM4Z3Hu9boH/recaptcha__en.js1184ms1037ms104ms3rd
Unattributable579ms91ms0ms1st
https://www.alessandrorosina.it/554ms19ms7ms1st
https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.109.0/core-it.js443ms328ms47ms3rd
https://www.googletagmanager.com/gtag/js?id=G-GV4WQW254K&cx=c&gtm=4e6b41247ms184ms55ms3rd
https://www.googletagmanager.com/gtag/js?id=UA-59809579-1206ms160ms44ms3rd
https://www.alessandrorosina.it/wp-content/themes/arosina/bower_components/foundation/js/vendor/jquery.js?ver=2.1.0182ms157ms8ms1st
https://cdn.iubenda.com/iubenda.js133ms113ms6ms3rd
https://platform.x.com/widgets.js122ms110ms8ms3rd
https://cdn.iubenda.com/cs/tcf/stub-v2.js?ver=3.13.5115ms108ms0ms3rd

Showing top 10 of 12 scripts

F
JS Bundles
Action
42 scripts, 677 KB unused
FIX
42 scripts, 677 KB unused
Warning::
https://www.gstatic.com/recaptcha/releases/bSuJ2xB...: 162 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/bSuJ2xB...: 162 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.gstatic.com/recaptcha/releases/bSuJ2xB...: 162 KB unused (46%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=UA-598...: 69 KB unused (53%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-GV4W...: 69 KB unused (42%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 677 KB
677 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.gstatic.com/recaptcha/releases/bSuJ2xBC8cFy7pM4Z3Hu9boH/recaptcha__en.js0 KB162 KB (46%)✓3rd
https://www.gstatic.com/recaptcha/releases/bSuJ2xBC8cFy7pM4Z3Hu9boH/recaptcha__en.js348 KB162 KB (46%)✓3rd
https://www.gstatic.com/recaptcha/releases/bSuJ2xBC8cFy7pM4Z3Hu9boH/recaptcha__en.js349 KB162 KB (46%)✓3rd
https://www.googletagmanager.com/gtag/js?id=UA-59809579-1133 KB69 KB (53%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-GV4WQW254K&cx=c&gtm=4e6b41164 KB69 KB (42%)✓3rd
https://cdn.iubenda.com/cookie_solution/iubenda_cs/1.109.0/core-it.js113 KB53 KB (47%)✓3rd
http://cdn.api.twitter.com/1/urls/count.json?url=https%3A%2F%2Fwww.alessandrorosina.it%2Fle-giovani-generazioni-il-basso-peso-elettorale-e-le-priorita-politiche%2F&callback=jQuery21301892360949524874_1793979131057&_=17939791310580 KB—✓3rd
http://cdn.api.twitter.com/1/urls/count.json?url=https%3A%2F%2Fwww.alessandrorosina.it%2Friflessioni%2Fquello-che-i-demografi-anticipano%2F&callback=jQuery21301892360949524874_1793979131063&_=17939791310640 KB—✓3rd
https://www.alessandrorosina.it/wp-includes/js/dist/vendor/wp-polyfill.min.js?ver=3.15.011 KB—✓1st
https://www.alessandrorosina.it/wp-content/plugins/contact-form-7/modules/recaptcha/index.js?ver=6.2.31 KB—✓1st

Consider code splitting or tree shaking to reduce unused code.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

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.

Why this matters

This bundle has high unused code — code-split or tree-shake to ship only what executes.

Source: web.dev / Lighthouse coverage

F
Page Weight Inventory
Action
83 resources · 1.9 MB · 677 KB savings available
FIX
83 resources · 1.9 MB · 677 KB savings available
Warning::
Page weight 1.9 MB exceeds 1 MB target by 913 KB
Got: 1.9 MB Expected: ≤ 1 MB
Info::
~677 KB of savings available
Warning::
57 third-party resources (84% of weight)
Info::
2 resources over 200KB
83 resources · 1.9 MiB · 57 third-party 913.3 KiB over 1MB target
JavaScript 66% · 1.2 MiB
Font 9% · 175.6 KiB
Document 8% · 156.2 KiB
Other 7% · 137.8 KiB
Image 6% · 117.8 KiB
CSS 4% · 69.9 KiB

~676.7 KiB of savings available

Remove unused JavaScript: 676.7 KiB
F
HTTP Caching
Action
No cache headers
FIX
No cache headers
Warning::
No Cache-Control header found
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
Page Weight Budget
Action
1.9 MB transferred, 83 requests
REVIEW
1.9 MB transferred, 83 requests
Info::
Page weighs 6.1 MB (1.9 MB transferred)
Warning::
JavaScript is 1.2 MB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 1.2 MB
Info::
83 HTTP requests
Info::
Estimated 0.40 g CO2 per page load
1.9 MB / 2.4 MB budget
1.9 MB transferred
83 requests
0.40 g CO2 per page load
JavaScript 1.2 MiB 66%
Fonts 175.6 KiB 9%
HTML 156.2 KiB 8%
Other 135.8 KiB 7%
Images 116.0 KiB 6%
CSS 69.9 KiB 4%
Other 2.3 KiB 0%
Other 1.5 KiB 0%
0 2.4 MB 4.9 MB
Approaching limit

Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.

Why this matters

JavaScript bundle is large — code-split routes and lazy-load off-screen components to defer.

Source: web.dev

C
Image Optimization
Action
6 images, 0 KB saveable
REVIEW
6 images, 0 KB saveable
Warning::
https://www.alessandrorosina.it/wp-content/themes/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
Warning::
https://www.alessandrorosina.it/wp-content/themes/... is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
6 images 116 KB
0 oversized -0 KB
6 legacy format
2 missing dimensions CLS 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

B
HTTP/3 (QUIC)
HTTP/3 not advertised
REVIEW
HTTP/3 not advertised
Info::
HTTP/3 (QUIC) is not advertised
HTTP/3 isn't advertised via Alt-Svc and the worker didn't negotiate h3. HTTP/3 reduces handshake latency (1-RTT instead of 2-3 RTTs) and is more resilient on lossy connections. Most modern CDNs (Cloudflare, Fastly, AWS CloudFront, Google Cloud CDN) support HTTP/3 with a single config switch -- consider enabling for mobile-heavy workloads.
B
Document Compression
Document response uses gzip; brotli would be ~20% smaller
REVIEW
Document response uses gzip; brotli would be ~20% smaller
Info::
Main HTML response uses gzip (brotli would be ~20% smaller)
All current browsers support brotli. Most CDNs (Cloudflare, Fastly, AWS CloudFront, Vercel, Netlify) can switch from gzip to brotli with a single config flag. Origin servers (nginx, Apache) need a brotli module compiled in -- nginx-brotli or Apache mod_brotli.
B
Main HTML Cache-Control
No Cache-Control header on main HTML response
REVIEW
No Cache-Control header on main HTML response
Info::
Main HTML response has no Cache-Control header
Without an explicit Cache-Control, browsers fall back to heuristic caching (~10% of Last-Modified age). Set `Cache-Control: no-cache` or `max-age=300` for HTML to control freshness explicitly -- prevents stale auth state and SPA shell drift.
B
Server-Timing Observability
No Server-Timing header found
REVIEW
No Server-Timing header found
Info::
No Server-Timing header found
Server-Timing exposes backend timing breakdowns to browser DevTools (e.g., `db: 45ms; render: 120ms; cache: 2ms`). Useful for diagnosing slow pages without backend log access. Most modern frameworks (Next.js, Cloudflare Workers, Fastly) emit it automatically; absence on a managed platform usually means telemetry headers are stripped at the edge.
B
JavaScript Blocking
2 JS blocking issue(s) detected
REVIEW
2 JS blocking issue(s) detected
Warning::
19 render-blocking <script src> tag(s) without async/defer
Each `<script src=...>` without `async`, `defer`, or `type="module"` blocks HTML parsing while the browser fetches and executes it. The block lasts the entire round-trip + execution time -- on slow networks this translates directly into LCP delay. Add `defer` (executes after parse, in source order) for scripts that interact with the DOM, or `async` (executes whenever ready) for analytics / independent scripts. Module scripts (`type="module"`) are deferred by default.
Warning::
Total JS execution time is 3.9 s -- over the 3.5s budget
Total JavaScript execution (parse + compile + run) across all scripts exceeds 3.5 seconds. On low-end devices that becomes 7-15+ seconds and shows up directly in TBT and INP. Reduce by: tree-shaking unused dependencies, code-splitting (dynamic `import()`), removing or deferring third-party tracking, and replacing heavy frameworks where they're not needed.
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
4 fonts (176 KB)
PASS
4 fonts (176 KB)
Info::
4 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

4

176 KB total

Render-blocking

0

of 4

Dominant font-display

swap

Most common across fonts

Font loading timeline
Transfer FOIT (block) FOUT (swap)
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.5 s LCP 5.4 shttps://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2memvYaGs126MiZpBA-UvWbX... https://fonts.gstatic.com/s/opensans/v44/memvYaGs126MiZpBA-UvWbX2vVnXBbObj2OVTS-mu0SC55I.woff2 — 42.0 KiB — 80 ms — font-display: swaphttps://www.alessandrorosina.it/wp-content/themes/arosina/bower_components/fontawesome/fonts/fontawesome-webfont.woff2?v=4.3.0fontawesome-webfont.woff2 https://www.alessandrorosina.it/wp-content/themes/arosina/bower_components/fontawesome/fonts/fontawesome-webfont.woff2?v=4.3.0 — 55.6 KiB — 26 ms — font-display: swaphttps://fonts.gstatic.com/s/opensans/v44/memtYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWqWuU6FxZCJgg.woff2memtYaGs126MiZpBA-UFUIc... https://fonts.gstatic.com/s/opensans/v44/memtYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWqWuU6FxZCJgg.woff2 — 44.0 KiB — 85 ms — font-display: swaphttps://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2KFO7CnqEu92Fr1ME7kSn66a... https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2 — 33.9 KiB — 82 ms — font-display: swap
memvYaGs126MiZpBA-UvWbX... woff2 swap
Size 42 KB
Load time 80 ms
Start 676 ms
Risk FOUT — text flashes from fallback to web font
fontawesome-webfont.woff2 unknown swap
Size 56 KB
Load time 26 ms
Start 676 ms
Risk FOUT — text flashes from fallback to web font
memtYaGs126MiZpBA-UFUIc... woff2 swap
Size 44 KB
Load time 85 ms
Start 678 ms
Risk FOUT — text flashes from fallback to web font
KFO7CnqEu92Fr1ME7kSn66a... woff2 swap
Size 34 KB
Load time 82 ms
Start 1.3 s
Risk FOUT — 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 ~17 KB and ~34 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
3 hints, 0 missing preconnects
PASS
3 hints, 0 missing preconnects
Info::
Page uses 3 resource hint(s)

Current Resource Hints

preconnect
—
preload
—
dns-prefetch
3
prefetch
—

3 resource hints configured

A+
Asset Compression
All 1 asset host use brotli
PASS
All 1 asset host use brotli
Info::
cdn.iubenda.com serves assets with brotli (assets: 6)
Got: cdn.iubenda.com (application/javascript)
A+
LCP Image Preload
LCP preload audit not available
PASS
LCP preload audit not available
Info::
LCP image preload audit not available for this scan
A+
Server Response Intelligence
2 server-response signal(s) detected
PASS
2 server-response signal(s) detected
Info::
`Vary` header declared: accept,content-type,Accept-Encoding
The page declares a `Vary` header, telling downstream caches which request headers the response varies on. Critical for content-negotiated responses (compression, language, cookies, device class).
Info::
No `ETag` or `Last-Modified` -- conditional GET not supported
Without either header, browsers can't issue conditional GETs and refresh always re-downloads the full response body even when nothing changed. Add `ETag: "<hash>"` (or `Last-Modified: <date>`) on cacheable responses; the server returns 304 Not Modified when the client's cached copy is still valid, saving bandwidth.
A+
Render-Blocking Resources
No render-blocking resources detected
PASS
No render-blocking resources detected
Info::
No render-blocking resources detected in <head>
A+
Third-Party Resources
No third-party resources detected
PASS
No third-party resources detected
A+
CSS Performance Depth
No CSS performance depth issues detected
PASS
No CSS performance depth issues detected
Info::
No CSS performance depth issues detected
A+
Green Hosting
Whether the site is served from green-energy infrastructure
PASS

Green Hosting

This site is hosted on green energy infrastructure

Provider: OVHcloud

Network Waterfall
83 requests over 2414ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s FCP 2.5 s LCP 5.4 shttps://www.alessandrorosina.it// https://www.alessandrorosina.it/ — 200 — 15.1 KiB — 411 ms — h2https://www.alessandrorosina.it/wp-content/plugins/contact-form-7/includes/css/styles.css?ver=6.2.3/wp-content/plugins/contact-form-7/... https://www.alessandrorosina.it/wp-content/plugins/contact-form-7/includes/css/styles.css?ver=6.2.3 — 200 — 1.2 KiB — 23 ms — h2https://cdn-images.mailchimp.com/embedcode/classic-081711.css?ver=4bd563d8bb800a1c2b1257fcb541eedacdn-images.mailchimp.com/embedcode/... https://cdn-images.mailchimp.com/embedcode/classic-081711.css?ver=4bd563d8bb800a1c2b1257fcb541eeda — 200 — 1.5 KiB — 87 ms — h3https://www.alessandrorosina.it/wp-content/themes/arosina/library/css/style.css?ver=2.0%20%28Sass%29/wp-content/themes/arosina/library/... https://www.alessandrorosina.it/wp-content/themes/arosina/library/css/style.css?ver=2.0%20%28Sass%29 — 200 — 28.8 KiB — 44 ms — h2https://cdn.iubenda.com/cs/tcf/stub-v2.js?ver=3.13.5cdn.iubenda.com/cs/tcf/stub-v2.js?v... https://cdn.iubenda.com/cs/tcf/stub-v2.js?ver=3.13.5 — 200 — 1.4 KiB — 112 ms — h2https://www.alessandrorosina.it/wp-content/themes/arosina/bower_components/foundation/js/vendor/jquery.js?ver=2.1.0/wp-content/themes/arosina/bower_co... https://www.alessandrorosina.it/wp-content/themes/arosina/bower_components/foundation/js/vendor/jquery.js?ver=2.1.0 — 200 — 29.5 KiB — 65 ms — h2https://www.alessandrorosina.it/wp-content/themes/arosina/bower_components/foundation/js/vendor/modernizr.js?ver=2.5.3/wp-content/themes/arosina/bower_co... https://www.alessandrorosina.it/wp-content/themes/arosina/bower_components/foundation/js/vendor/modernizr.js?ver=2.5.3 — 200 — 4.7 KiB — 63 ms — h2https://www.alessandrorosina.it/wp-content/themes/arosina/library/images/Alessandro-Rosina.jpg/wp-content/themes/arosina/library/... https://www.alessandrorosina.it/wp-content/themes/arosina/library/images/Alessandro-Rosina.jpg — 200 — 30.4 KiB — 43 ms — h2https://www.alessandrorosina.it/wp-content/themes/arosina/library/images/le-nuove-mezze-stagioni-della-vita_01.jpg/wp-content/themes/arosina/library/... https://www.alessandrorosina.it/wp-content/themes/arosina/library/images/le-nuove-mezze-stagioni-della-vita_01.jpg — 200 — 57.3 KiB — 62 ms — h2https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,700fonts.googleapis.com/css?family=Ope... https://fonts.googleapis.com/css?family=Open+Sans:300italic,400italic,700italic,400,300,700 — 200 — 2.5 KiB — 117 ms — h2https://www.alessandrorosina.it/wp-content/uploads/2025/11/9788832967159_0_0_600_0.jpg/wp-content/uploads/2025/11/9788832... https://www.alessandrorosina.it/wp-content/uploads/2025/11/9788832967159_0_0_600_0.jpg — 200 — 16.8 KiB — 23 ms — 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h2https://cdn.iubenda.com/cs/bridge/iframe_bridge-1.7.0.html?origin=https%3A%2F%2Fwww.alessandrorosina.it%2F&options=%7B%22cookiePolicyId%22%3A54928695%7D&c_name=%22_iub_cs-54928695%22&meth=%22reset%22cdn.iubenda.com/cs/bridge/iframe_br... https://cdn.iubenda.com/cs/bridge/iframe_bridge-1.7.0.html?origin=https%3A%2F%2Fwww.alessandrorosina.it%2F&options=%7B%22cookiePolicyId%22%3A54928695%7D&c_name=%22_iub_cs-54928695%22&meth=%22reset%22 — 200 — 2.2 KiB — 73 ms — h2https://cdn.iubenda.com/cs/bridge/iframe_bridge-1.7.0.html?origin=https%3A%2F%2Fwww.alessandrorosina.it%2F&options=%7B%7D&c_name=%22_iub_cs-54928695-uspr%22&meth=%22reset%22cdn.iubenda.com/cs/bridge/iframe_br... https://cdn.iubenda.com/cs/bridge/iframe_bridge-1.7.0.html?origin=https%3A%2F%2Fwww.alessandrorosina.it%2F&options=%7B%7D&c_name=%22_iub_cs-54928695-uspr%22&meth=%22reset%22 — 200 — 2.2 KiB — 44 ms — h2https://cdn.iubenda.com/cs/tcf/v3-versioned/vendorlist.184.jsoncdn.iubenda.com/cs/tcf/v3-versioned... https://cdn.iubenda.com/cs/tcf/v3-versioned/vendorlist.184.json — 200 — 114.2 KiB — 145 ms — h2https://cdn.iubenda.com/cs/tcf/gac-vendors.jsoncdn.iubenda.com/cs/tcf/gac-vendors.... https://cdn.iubenda.com/cs/tcf/gac-vendors.json — 200 — 18.8 KiB — 150 ms — h2https://cdn.iubenda.com/cs/bridge/iframe_bridge-1.7.0.html?origin=https%3A%2F%2Fwww.alessandrorosina.it%2F&options=%7B%22cookiePolicyId%22%3A54928695%7D&c_name=%22_iub_cs-54928695%22&meth=%22reset%22cdn.iubenda.com/cs/bridge/iframe_br... https://cdn.iubenda.com/cs/bridge/iframe_bridge-1.7.0.html?origin=https%3A%2F%2Fwww.alessandrorosina.it%2F&options=%7B%22cookiePolicyId%22%3A54928695%7D&c_name=%22_iub_cs-54928695%22&meth=%22reset%22 — 200 — 0 B — 66 ms — h2https://cdn.iubenda.com/cs/bridge/iframe_bridge-1.7.0.html?origin=https%3A%2F%2Fwww.alessandrorosina.it%2F&options=%7B%7D&c_name=%22_iub_cs-54928695-uspr%22&meth=%22reset%22cdn.iubenda.com/cs/bridge/iframe_br... https://cdn.iubenda.com/cs/bridge/iframe_bridge-1.7.0.html?origin=https%3A%2F%2Fwww.alessandrorosina.it%2F&options=%7B%7D&c_name=%22_iub_cs-54928695-uspr%22&meth=%22reset%22 — 200 — 0 B — 39 ms — h2https://idb.iubenda.com/csdata?db=hits1idb.iubenda.com/csdata?db=hits1 https://idb.iubenda.com/csdata?db=hits1 — 204 — 573 B — 135 ms — h2
HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
63% of JavaScript execution is third-party
First-party Third-party 2449ms · 419KB · €27/mo
www.gstatic.com
Other
Costly
Execution 1184ms
Transfer 0 KB
Unused 46%
Monthly Cost €13/mo
Iubenda
Consent
Essential
Execution 443ms
Transfer 113 KB
Unused 47%
Monthly Cost €5/mo
Google Tag Manager
Tag Manager
Costly
Execution 247ms
Transfer 164 KB
Unused 42%
Monthly Cost €3/mo
Google Tag Manager
Tag Manager
Costly
Execution 206ms
Transfer 133 KB
Unused 53%
Monthly Cost €2/mo
Iubenda
Consent
Essential
Execution 133ms
Transfer 7 KB
Monthly Cost €1/mo
platform.x.com
Other
Optional
Execution 122ms
Transfer 1 KB
Monthly Cost €1/mo
Iubenda
Consent
Essential
Execution 115ms
Transfer 1 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • www.gstatic.com adds 1184ms and costs ~€13/month
  • Google Tag Manager adds 247ms and costs ~€3/month
  • Google Tag Manager adds 206ms and costs ~€2/month

63% of JavaScript execution time comes from third-party scripts.

Why this matters

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

www.gstatic.com takes 1184ms 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

Google Tag Manager takes 247ms 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

Google Tag Manager takes 206ms 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

53% of Google Tag Manager'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

How third-party costs are calculated

Real-User Performance (CrUX)
Field metrics from the Chrome User Experience Report
INFO

Chrome User Experience (CrUX)

Real-user metrics from the Chrome UX Report (2026-10-07 — 2026-11-03)

LCP (p75)

1640 ms

92% good

INP (p75)

73 ms

96% good

CLS (p75)

0.020

100% good

FCP (p75)

1549 ms

TTFB (p75)

1003 ms

This origin passes Core Web Vitals assessment
Image Optimization
6 images, 142 KB total, 0 KB wasted
INFO

Image Optimization Audit

Total Images

6

Total Size

142 KB

3 missing alt text 3 missing dimensions 3 missing lazy loading
All checks on this page are automated. Results are estimates - run targeted manual reviews when the score affects a release decision.

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