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https://esteri.it

Performance

· 17 checks — Lighthouse + waterfall + sustainability rolled into one auditable list.
SCORE
78
GRADE
C
FIX
4
REVIEW
4
PASS
7
INFO
2

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

Mobile Desktop
50
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
82
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
85
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.

4.65 s

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

4.81 s

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

601 ms

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

0.015

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

9.35 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.

10.64 s

Page Load Progression

812 ms
1.6 s
2.4 s
3.2 s
4.1 s
4.9 s
5.7 s
6.5 s
Checks
17
7 PASS 4 REVIEW 4 FIX
D
Third-Party Impact
Action
100% third-party, 0 ms blocking
FIX
100% third-party, 0 ms blocking
Warning::
Third-party code accounts for 100% of page weight (2.0 MiB of 2.0 MiB)
Info::
Third-party blocking time is low (0 ms)
100%
First-party Third-party
D
JS Execution Cost
Action
2967ms total JS execution
FIX
2967ms total JS execution
Warning::
https://www.googletagmanager.com/gtag/js?id=G-TW25...: 643ms CPU time
Warning::
https://www.esteri.it/wp-content/themes/mae/assets...: 622ms CPU time
Warning::
https://www.esteri.it/it/: 558ms CPU time
Warning::
https://www.esteri.it/18f5227b-e27b-445a-a53f-f845...: 521ms CPU time
Warning::
Unattributable: 437ms CPU time
Warning::
Third-party scripts: 2967ms (100% of total)

Main Thread Breakdown

Other 34% Script Evaluation 34% Style & Layout 17% Script Parsing & Compilation 7% Parse HTML & CSS 4% Rendering 3%
ScriptTotalScriptingParse/CompileParty
https://www.googletagmanager.com/gtag/js?id=G-TW25NWEC4Y643ms245ms55ms3rd
https://www.esteri.it/wp-content/themes/mae/assets/js/bootstrap-italia.min.js?ver=2.1.1622ms183ms34ms3rd
https://www.esteri.it/it/558ms12ms4ms3rd
https://www.esteri.it/18f5227b-e27b-445a-a53f-f845fbe69b40/stormcaster.js521ms425ms55ms3rd
Unattributable437ms18ms0ms3rd
https://www.esteri.it/wp-content/plugins/iwy-extabman/public/js/chart_29.min.js?ver=2.9.276ms47ms29ms3rd
https://www.esteri.it/wp-includes/js/jquery/jquery.min.js?ver=3.7.159ms45ms11ms3rd
https://www.esteri.it/wp-content/themes/mae/assets/css/bootstrap-italia.min.css?ver=2.1.151ms0ms0ms3rd
D
Page Weight Inventory
Action
50 resources · 2.0 MB · 280 KB savings available
FIX
50 resources · 2.0 MB · 280 KB savings available
Warning::
Page weight 1.0 MB over 1MB target
Got: 2.0 MB Expected: ≤ 1 MB
Info::
~280 KB of savings available
Warning::
49 third-party resources (100% of weight)
Info::
1 resources over 200KB
50 resources · 2.0 MiB · 49 third-party 1.0 MiB over 1MB target
Image 58% · 1.2 MiB
JavaScript 29% · 605.6 KiB
CSS 6% · 123.0 KiB
Font 6% · 115.4 KiB
Document 1% · 25.3 KiB
Other 0% · 2.1 KiB

~279.9 KiB of savings available

Remove unused JavaScript: 279.9 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
2.0 MB transferred, 50 requests
REVIEW
2.0 MB transferred, 50 requests
Info::
Page weighs 3.5 MB (2.0 MB transferred)
Warning::
JavaScript is 606 KB — consider code splitting or lazy loading
Large JavaScript bundles delay interactivity. Split code by route or defer non-critical scripts.
Got: 606 KB
Info::
50 HTTP requests
Info::
Estimated 0.43 g CO2 per page load
2.0 MB / 2.4 MB budget
2.0 MB transferred
50 requests
0.43 g CO2 per page load
Other 914.7 KiB 44%
JavaScript 605.6 KiB 29%
Images 290.8 KiB 14%
CSS 123.0 KiB 6%
Fonts 115.4 KiB 6%
HTML 24.4 KiB 1%
Other 1021 B 0%
Other 556 B 0%
Other 547 B 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

B
Image Optimization
8 images, 0 KB saveable
REVIEW
8 images, 0 KB saveable
Warning::
https://chatbot.esteri.it/assets/chats.svg is missing width/height — may cause layout shift
Set explicit width and height to prevent CLS.
8 images 291 KB
0 oversized -0 KB
6 legacy format
1 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

C
JS Bundles
Action
17 scripts, 280 KB unused
REVIEW
17 scripts, 280 KB unused
Warning::
https://www.esteri.it/wp-content/plugins/iwy-extab...: 63 KB unused (79%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.googletagmanager.com/gtag/js?id=G-TW25...: 63 KB unused (43%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.esteri.it/wp-content/themes/mae/assets...: 51 KB unused (73%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://www.esteri.it/18f5227b-e27b-445a-a53f-f845...: 40 KB unused (24%)
Consider code splitting or tree shaking to reduce unused code.
Warning::
https://ingestion.webanalytics.italia.it/matomo.js: 38 KB unused (59%)
Consider code splitting or tree shaking to reduce unused code.
Info::
Total unused JavaScript: 280 KB
280 KB unused JavaScript

Downloaded but never executed on this page.

ScriptSizeUnusedMinifiedParty
https://www.esteri.it/wp-content/plugins/iwy-extabman/public/js/chart_29.min.js?ver=2.9.281 KB63 KB (79%)✓3rd
https://www.googletagmanager.com/gtag/js?id=G-TW25NWEC4Y146 KB63 KB (43%)✓3rd
https://www.esteri.it/wp-content/themes/mae/assets/js/bootstrap-italia.min.js?ver=2.1.171 KB51 KB (73%)✓3rd
https://www.esteri.it/18f5227b-e27b-445a-a53f-f845fbe69b40/stormcaster.js165 KB40 KB (24%)✓3rd
https://ingestion.webanalytics.italia.it/matomo.js66 KB38 KB (59%)✓3rd
https://www.esteri.it/wp-includes/js/jquery/jquery.min.js?ver=3.7.135 KB25 KB (71%)✓3rd
https://www.esteri.it/wp-includes/js/dist/hooks.min.js?ver=dd5603f07f9220ed27f12 KB—✓3rd
https://chatbot.esteri.it/js/frame.js?bot=4&ver=6.9.42 KB—✓3rd
https://www.esteri.it/wp-includes/js/dist/i18n.min.js?ver=c26c3dc7bed3667933752 KB—✓3rd
https://www.esteri.it/wp-content/plugins/iwy-newsletter/public/js/iwy-newsletter-public.min.js?ver=1.0.01 KB—✓3rd

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

C
Green Hosting
Action
Whether the site is served from green-energy infrastructure
REVIEW

Green Hosting

No green hosting detected

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
6 fonts (115 KB)
PASS
6 fonts (115 KB)
Info::
6 font(s) use font-display: swap (FOUT risk but functional)

Web fonts

6

115 KB total

Render-blocking

0

of 6

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 4.6 s LCP 4.8 shttps://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-600.woff2titillium-web-v10-latin... https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-600.woff2 — 17.9 KiB — 573 ms — font-display: swaphttps://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-regular.woff2titillium-web-v10-latin... https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-regular.woff2 — 17.9 KiB — 534 ms — font-display: swaphttps://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-700.woff2titillium-web-v10-latin... https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-700.woff2 — 17.1 KiB — 574 ms — font-display: swaphttps://www.esteri.it/wp-content/themes/mae/assets/fonts/Lora/lora-v20-latin-ext_latin-regular.woff2lora-v20-latin-ext_lati... https://www.esteri.it/wp-content/themes/mae/assets/fonts/Lora/lora-v20-latin-ext_latin-regular.woff2 — 24.1 KiB — 575 ms — font-display: swaphttps://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-300.woff2titillium-web-v10-latin... https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-300.woff2 — 18.0 KiB — 587 ms — font-display: swaphttps://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-italic.woff2titillium-web-v10-latin... https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-italic.woff2 — 20.4 KiB — 589 ms — font-display: swap
titillium-web-v10-latin... woff2 swap
Size 18 KB
Load time 573 ms
Start 4.3 s
Risk FOUT — text flashes from fallback to web font
titillium-web-v10-latin... woff2 swap
Size 18 KB
Load time 534 ms
Start 4.3 s
Risk FOUT — text flashes from fallback to web font
titillium-web-v10-latin... woff2 swap
Size 17 KB
Load time 574 ms
Start 4.3 s
Risk FOUT — text flashes from fallback to web font
lora-v20-latin-ext_lati... woff2 swap
Size 24 KB
Load time 575 ms
Start 4.3 s
Risk FOUT — text flashes from fallback to web font
titillium-web-v10-latin... woff2 swap
Size 18 KB
Load time 587 ms
Start 4.3 s
Risk FOUT — text flashes from fallback to web font
titillium-web-v10-latin... woff2 swap
Size 20 KB
Load time 589 ms
Start 4.3 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)
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
No optimization needed
PASS
No optimization needed
Info::
No resource hint issues
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
Network Waterfall
50 requests over 7036ms
INFO
0 ms 1.0 s 2.0 s 3.0 s 4.0 s 5.0 s 6.0 s 7.0 s FCP 4.6 s LCP 4.8 shttps://esteri.it// https://esteri.it/ — 301 — 903 B — 1.1 s — h2https://www.esteri.it/it/www.esteri.it/it/ https://www.esteri.it/it/ — 200 — 24.4 KiB — 1.9 s — h2https://www.esteri.it/wp-content/plugins/iwy-extabman/public/css/iwy-extabman-public.css?ver=1.0.0www.esteri.it/wp-content/plugins/iw... https://www.esteri.it/wp-content/plugins/iwy-extabman/public/css/iwy-extabman-public.css?ver=1.0.0 — 200 — 455 B — 558 ms — h2https://www.esteri.it/wp-content/plugins/iwy-newsletter/public/css/iwy-newsletter-public.css?ver=1.0.0www.esteri.it/wp-content/plugins/iw... https://www.esteri.it/wp-content/plugins/iwy-newsletter/public/css/iwy-newsletter-public.css?ver=1.0.0 — 200 — 320 B — 556 ms — h2https://www.esteri.it/wp-content/plugins/iwy-search-autocomplete/public/css/iwy-search-autocomplete-public.css?ver=1.0.0www.esteri.it/wp-content/plugins/iw... https://www.esteri.it/wp-content/plugins/iwy-search-autocomplete/public/css/iwy-search-autocomplete-public.css?ver=1.0.0 — 200 — 1.6 KiB — 559 ms — h2https://www.esteri.it/wp-content/plugins/iwy-short-list/public/css/iwy-short-list-public.css?ver=1.2.0www.esteri.it/wp-content/plugins/iw... https://www.esteri.it/wp-content/plugins/iwy-short-list/public/css/iwy-short-list-public.css?ver=1.2.0 — 200 — 322 B — 547 ms — h2https://www.esteri.it/wp-content/plugins/sitepress-multilingual-cms/templates/language-switchers/menu-item/style.min.css?ver=1www.esteri.it/wp-content/plugins/si... https://www.esteri.it/wp-content/plugins/sitepress-multilingual-cms/templates/language-switchers/menu-item/style.min.css?ver=1 — 200 — 326 B — 560 ms — h2https://www.esteri.it/wp-content/themes/mae/assets/css/bootstrap-italia.min.css?ver=2.1.1www.esteri.it/wp-content/themes/mae... https://www.esteri.it/wp-content/themes/mae/assets/css/bootstrap-italia.min.css?ver=2.1.1 — 200 — 113.6 KiB — 1.1 s — h2https://www.esteri.it/wp-content/themes/mae/style.css?ver=2.1.1www.esteri.it/wp-content/themes/mae... https://www.esteri.it/wp-content/themes/mae/style.css?ver=2.1.1 — 200 — 460 B — 564 ms — h2https://www.esteri.it/wp-content/themes/mae/assets/css/custom.min.css?ver=2.1.1www.esteri.it/wp-content/themes/mae... https://www.esteri.it/wp-content/themes/mae/assets/css/custom.min.css?ver=2.1.1 — 200 — 6.0 KiB — 565 ms — h2https://www.esteri.it/wp-includes/js/jquery/jquery.min.js?ver=3.7.1www.esteri.it/wp-includes/js/jquery... https://www.esteri.it/wp-includes/js/jquery/jquery.min.js?ver=3.7.1 — 200 — 34.8 KiB — 794 ms — h2https://www.esteri.it/wp-content/plugins/iwy-extabman/public/js/chart_29.min.js?ver=2.9.2www.esteri.it/wp-content/plugins/iw... https://www.esteri.it/wp-content/plugins/iwy-extabman/public/js/chart_29.min.js?ver=2.9.2 — 200 — 80.7 KiB — 1.2 s — h2https://www.esteri.it/wp-content/plugins/iwy-extabman/public/js/wNumb.min.js?ver=1.2.0www.esteri.it/wp-content/plugins/iw... https://www.esteri.it/wp-content/plugins/iwy-extabman/public/js/wNumb.min.js?ver=1.2.0 — 200 — 1.2 KiB — 1.2 s — h2https://www.esteri.it/wp-content/plugins/iwy-extabman/public/js/bilancio.js?ver=1.0.0www.esteri.it/wp-content/plugins/iw... https://www.esteri.it/wp-content/plugins/iwy-extabman/public/js/bilancio.js?ver=1.0.0 — 200 — 2.4 KiB — 1.2 s — h2https://www.esteri.it/wp-content/uploads/2026/04/Tajani-e-Tripodi-in-Lussemburgo-per-il-Consiglio-affari-esteri-UE.-Tra-i-temi-in-agenda-Ucraina-crisi-in-Medio-oriente-e-confronto-con-premier-libanese-768x505.jpegwww.esteri.it/wp-content/uploads/20... https://www.esteri.it/wp-content/uploads/2026/04/Tajani-e-Tripodi-in-Lussemburgo-per-il-Consiglio-affari-esteri-UE.-Tra-i-temi-in-agenda-Ucraina-crisi-in-Medio-oriente-e-confronto-con-premier-libanese-768x505.jpeg — 200 — 43.9 KiB — 1.3 s — h2https://www.esteri.it/wp-content/themes/mae/assets//img/icona-podcast.svgwww.esteri.it/wp-content/themes/mae... https://www.esteri.it/wp-content/themes/mae/assets//img/icona-podcast.svg — 200 — 2.1 KiB — 543 ms — h2https://www.esteri.it/wp-content/uploads/2025/09/impegno-umanitario-italiano-per-gaza-768x505.jpegwww.esteri.it/wp-content/uploads/20... https://www.esteri.it/wp-content/uploads/2025/09/impegno-umanitario-italiano-per-gaza-768x505.jpeg — 200 — 44.4 KiB — 596 ms — h2https://www.esteri.it/wp-content/uploads/2026/03/TaskForceGolfo_BannerHP-768x505.jpegwww.esteri.it/wp-content/uploads/20... https://www.esteri.it/wp-content/uploads/2026/03/TaskForceGolfo_BannerHP-768x505.jpeg — 200 — 29.7 KiB — 587 ms — h2https://www.esteri.it/wp-includes/js/dist/hooks.min.js?ver=dd5603f07f9220ed27f1www.esteri.it/wp-includes/js/dist/h... https://www.esteri.it/wp-includes/js/dist/hooks.min.js?ver=dd5603f07f9220ed27f1 — 200 — 2.2 KiB — 555 ms — h2https://www.esteri.it/wp-includes/js/dist/i18n.min.js?ver=c26c3dc7bed366793375www.esteri.it/wp-includes/js/dist/i... https://www.esteri.it/wp-includes/js/dist/i18n.min.js?ver=c26c3dc7bed366793375 — 200 — 2.5 KiB — 550 ms — h2https://chatbot.esteri.it/js/frame.js?bot=4&ver=6.9.4chatbot.esteri.it/js/frame.js?bot=4... https://chatbot.esteri.it/js/frame.js?bot=4&ver=6.9.4 — 200 — 1.6 KiB — 902 ms — http/1.1https://www.googletagmanager.com/gtag/js?id=G-TW25NWEC4Ywww.googletagmanager.com/gtag/js?id... https://www.googletagmanager.com/gtag/js?id=G-TW25NWEC4Y — 200 — 145.8 KiB — 265 ms — h2https://ingestion.webanalytics.italia.it/matomo.jsingestion.webanalytics.italia.it/ma... https://ingestion.webanalytics.italia.it/matomo.js — 200 — 65.6 KiB — 1.0 s — http/1.1https://www.esteri.it/wp-content/themes/mae/assets/img/logo-mae-2x.webpwww.esteri.it/wp-content/themes/mae... https://www.esteri.it/wp-content/themes/mae/assets/img/logo-mae-2x.webp — 200 — 17.3 KiB — 582 ms — h2https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-600.woff2www.esteri.it/wp-content/themes/mae... https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-600.woff2 — 200 — 17.9 KiB — 573 ms — h2https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-regular.woff2www.esteri.it/wp-content/themes/mae... https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-regular.woff2 — 200 — 17.9 KiB — 534 ms — h2https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-700.woff2www.esteri.it/wp-content/themes/mae... https://www.esteri.it/wp-content/themes/mae/assets/fonts/Titillium_Web/titillium-web-v10-latin-ext_latin-700.woff2 — 200 — 17.1 KiB — 574 ms — 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HTML JavaScript CSS Images Fonts XHR/Fetch Other
Third-Party Script Cost
Per-script blocking time, transfer cost, and cache headers
INFO
100% of JavaScript execution is third-party
First-party Third-party 2967ms · 635KB · €32/mo
Google Tag Manager
Tag Manager
Costly
Execution 643ms
Transfer 146 KB
Unused 43%
Monthly Cost €7/mo
www.esteri.it
Other
Costly
Execution 622ms
Transfer 71 KB
Unused 73%
Monthly Cost €7/mo
www.esteri.it
Other
Costly
Execution 558ms
Transfer 24 KB
Monthly Cost €6/mo
www.esteri.it
Other
Costly
Execution 521ms
Transfer 165 KB
Unused 24%
Monthly Cost €6/mo
Unattributable
Other
Costly
Execution 437ms
Transfer 0 KB
Monthly Cost €5/mo
www.esteri.it
Other
Optional
Execution 76ms
Transfer 81 KB
Unused 79%
Monthly Cost €1/mo
www.esteri.it
Other
Optional
Execution 59ms
Transfer 35 KB
Unused 71%
Monthly Cost €1/mo
www.esteri.it
Other
Optional
Execution 51ms
Transfer 114 KB
Monthly Cost €1/mo

These scripts may cost more than they're worth

  • Google Tag Manager adds 643ms and costs ~€7/month
  • www.esteri.it adds 622ms and costs ~€7/month
  • www.esteri.it adds 558ms and costs ~€6/month
  • www.esteri.it adds 521ms and costs ~€6/month
  • Unattributable adds 437ms and costs ~€5/month

100% of JavaScript execution time is spent on third-party scripts. Consider auditing which scripts are essential.

Why this matters

When third-party JS execution time exceeds your own, performance gains from frontend work are capped by code you don't own.

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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

Google Tag Manager takes 643ms 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

www.esteri.it takes 622ms 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

73% of www.esteri.it'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

www.esteri.it takes 558ms 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

www.esteri.it takes 521ms 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

Unattributable takes 437ms 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

79% of www.esteri.it'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

71% of www.esteri.it'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

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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