Lighthouse Desktop

· 0 checks — Desktop Lighthouse audit -- Performance, Accessibility, Best Practices, and SEO category breakdown.

SCORE

GRADE

FIX

REVIEW

PASS

INFO

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Performance issues directly impact user engagement and conversion rates.

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/content/dam/sen/COMUNICAZIONE LETTURA-desktop@2x.jpg	186.0 s	2.2 MiB
www.servizioelettriconazionale.it/content/dam/sen/AREA%20CLIENTI-desktop@2x.jpg	183.0 s	1.4 MiB
www.servizioelettriconazionale.it/content/dam/sen/header_domiciliazione.jpg	59.0 s	896.5 KiB
/content/dam/sen/bollett@online-header-desktop.jpg	303.0 s	246.2 KiB
www.servizioelettriconazionale.it/content/dam/sen/sito-old/gdpr-gdpr.jpeg	182.0 s	132.0 KiB
www.servizioelettriconazionale.it/content/dam/sen/hero-contratto.jpg	92.0 s	74.2 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	3600.0 s	75.8 KiB
www.servizioelettriconazionale.it/content/dam/sen/hero-lampadina%20hp.jpg	182.0 s	61.0 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	3581.0 s	65.9 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	3581.0 s	65.9 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	3580.0 s	65.7 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	3581.0 s	65.7 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	3581.0 s	65.6 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	3581.0 s	65.6 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	3581.0 s	65.5 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	3581.0 s	65.0 KiB
assets.adobedtm.com/eeb01e5b93f1/da57d328fadc/launch-7700a99bd994.min.js	3600.0 s	24.5 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	24847.0 s	27.9 KiB
www.servizioelettriconazionale.it/content/dam/sen/brick%20mini%20Pedius.jpg	178.0 s	13.9 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	22637.0 s	8.6 KiB
/content/dam/sen/Logo SEN piccolo per QA Assistant.png	153.0 s	2.4 KiB
www.servizioelettriconazionale.it/.rum/@adobe/helix-rum-js@%5E2/dist/micro.js	96.0 s	751 B
/etc.clientlibs/servizio-elettrico-nazionale/components/c...	43180.0 s	819 B
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	43182.0 s	670 B
/etc.clientlibs/servizio-elettrico-nazionale/components/c...	43180.0 s	386 B

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	365 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	60 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	60 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	55 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	45 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	45 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	40 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	25 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	25 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	15 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	15 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	15 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	15 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	10 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
Primo piano di un contatore con un dito che preme il pulsante per attivare il d… `div.col-12 > div.row > div.col-12 > img`	/content/dam/sen/COMUNICAZIONE LETTURA-desktop@2x.jpg	2.2 MiB	2.2 MiB
immagine di un uomo alla scrivania in un ufficio davanti ad un laptop `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/AREA%20CLIENTI-desktop@2x.jpg	1.4 MiB	1.4 MiB
Bonus sociale elettrico - disagio economico e fisico Informativa sui requisiti … `body.generalPage > main#main > div.banner-image > div.sen-hero-banner`	www.servizioelettriconazionale.it/content/dam/sen/header_domiciliazione.jpg	895.8 KiB	476.8 KiB
immagine della Bolletta del Servizio Elettrico Nazionale sospesa nel vuoto che … `div.col-12 > div.row > div.col-12 > img`	/content/dam/sen/bollett@online-header-desktop.jpg	246.0 KiB	240.3 KiB
immagine che raffigura una puntina da disegno rossa che fissa la data del 30 gi… `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/FINE%20TUTELA-desktop@2x.jpg	240.9 KiB	239.3 KiB
immagine di un laptop su sfondo blu sfumato che inquadra il tutorial di guida a… `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/desktop-guidaallabolletta.jpg	167.1 KiB	162.6 KiB
Nuove regole europee per la protezione dei dati `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/sito-old/gdpr-gdpr.jpeg	131.8 KiB	125.9 KiB
mano che tiene una lente di ingrandimento su una I `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/hero%20info.jpg	89.2 KiB	86.8 KiB
immagine dell'intestazione della Bolletta del Servizio Elettrico Nazionale `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/hero_leggi_la_bolletta.jpg	77.3 KiB	75.2 KiB
immagine di 2 mani che indicano su un foglio, una con una penna, l'altra con un… `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/hero-contratto.jpg	74.1 KiB	69.0 KiB
torna alla home servizio elettrico nazionale `div.row > div.logo-bar > a#logo > img.logo-desktop`	/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	10.0 KiB	8.7 KiB
Icona grafico - logo Pedius `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/brick%20mini%20Pedius.jpg	13.7 KiB	8.5 KiB

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-12-DIV

nodeLabel: SCROLL DOWN BENVENUTO SU Servizio Elettrico Nazionale Servizio di maggior tutel…

path: 1,HTML,1,BODY,5,MAIN,0,DIV

selector: body.generalPage > main#main > div.sen-hero-banner

snippet: <div tabindex="0" class="sen-hero-banner js-adapt-background" data-bg-d="/content/dam/sen/hero-lampadina%20hp.jpg" data-bg-m="/content/dam/sen/hero-mobile.png" style="background-image: url('/content/dam/sen/hero-lampadina%20hp.jpg')">

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

value: No additional origins are good candidates for preconnecting

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
www.servizioelettriconazionale.it/ruxitagentjs_ICA7NVfgqrux_10341260622154106.js	82.9 KiB	160 ms
assets.adobedtm.com/eeb01e5b93f1/da57d328fadc/launch-7700a99bd994.min.js	24.5 KiB	245 ms
/lt/1.css?apiType=css&c=1ab388cf-bd83-4ae4-a724-df49b109c...	401 B	210 ms
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	35.5 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/p...	30.2 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	27.3 KiB	120 ms
/etc.clientlibs/clientlibs/granite/jquery/granite/csrf.mi...	2.0 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	11.4 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 408 ms

URL	Time Spent
servizioelettriconazionale.it/	408 ms
www.servizioelettriconazionale.it/	0.0 ms

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 40 ms 25.8 KiB

URL	Transfer Size	Est Savings
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	27.2 KiB	25.8 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 80 ms 98.1 KiB

URL	Transfer Size	Est Savings
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	56.2 KiB	37.4 KiB
www.servizioelettriconazionale.it/ruxitagentjs_ICA7NVfgqrux_10341260622154106.js	82.1 KiB	34.7 KiB
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	35.4 KiB	26.0 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 11.6 KiB

URL	Transfer Size	Est Savings
/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...	16.1 KiB	6.6 KiB
/etc.clientlibs/servizio-elettrico-nazionale/components/c...	41.6 KiB	5.0 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
/content/dam/sen/COMUNICAZIONE LETTURA-desktop@2x.jpg	2.2 MiB
www.servizioelettriconazionale.it/content/dam/sen/AREA%20CLIENTI-desktop@2x.jpg	1.4 MiB
www.servizioelettriconazionale.it/content/dam/sen/header_domiciliazione.jpg	896.5 KiB
/content/dam/sen/bollett@online-header-desktop.jpg	246.2 KiB
www.servizioelettriconazionale.it/content/dam/sen/FINE%20TUTELA-desktop@2x.jpg	241.2 KiB
www.servizioelettriconazionale.it/content/dam/sen/desktop-guidaallabolletta.jpg	167.4 KiB
www.servizioelettriconazionale.it/content/dam/sen/sito-old/gdpr-gdpr.jpeg	132.0 KiB
www.servizioelettriconazionale.it/content/dam/sen/hero%20info.jpg	89.4 KiB
www.servizioelettriconazionale.it/ruxitagentjs_ICA7NVfgqrux_10341260622154106.js	82.9 KiB
www.servizioelettriconazionale.it/content/dam/sen/hero_leggi_la_bolletta.jpg	77.5 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
immagine che raffigura una puntina da disegno rossa che fissa la data del 30 gi… `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/FINE%20TUTELA-desktop@2x.jpg
immagine di un uomo alla scrivania in un ufficio davanti ad un laptop `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/AREA%20CLIENTI-desktop@2x.jpg
Primo piano di un contatore con un dito che preme il pulsante per attivare il d… `div.col-12 > div.row > div.col-12 > img`	/content/dam/sen/COMUNICAZIONE LETTURA-desktop@2x.jpg
immagine della Bolletta del Servizio Elettrico Nazionale sospesa nel vuoto che … `div.col-12 > div.row > div.col-12 > img`	/content/dam/sen/bollett@online-header-desktop.jpg
mano che tiene una lente di ingrandimento su una I `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/hero%20info.jpg
immagine dell'intestazione della Bolletta del Servizio Elettrico Nazionale `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/hero_leggi_la_bolletta.jpg
immagine di un laptop su sfondo blu sfumato che inquadra il tutorial di guida a… `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/desktop-guidaallabolletta.jpg
immagine di 2 mani che indicano su un foglio, una con una penna, l'altra con un… `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/hero-contratto.jpg
Nuove regole europee per la protezione dei dati `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/sito-old/gdpr-gdpr.jpeg
Icona grafico - logo Pedius `div.col-12 > div.row > div.col-12 > img`	www.servizioelettriconazionale.it/content/dam/sen/brick%20mini%20Pedius.jpg
torna alla home servizio elettrico nazionale `div.row > div.col-12 > a > img`	/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...
torna alla home servizio elettrico nazionale `div.row > div.logo-bar > a#logo > img.logo-desktop`	/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...
close cookie `div > div#cookie-policy-s > div#close-btn-s > img`	/etc.clientlibs/servizio-elettrico-nazionale/clientlibs/c...

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●LCP breakdown

●Modern HTTP

●Optimize viewport for mobile

●Minify CSS

●JavaScript execution time 1.2 s

●Minimizes main-thread work 1.8 s

●Avoid long main-thread tasks 4 long tasks found

●Page didn't prevent back/forward cache restoration

●Network Requests

●Network Round Trip Times 70 ms

●Server Backend Latencies 10 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 130 ms

●Avoid large layout shifts 3 layout shifts found

○INP breakdown

○User Timing marks and measures

○Avoid non-composited animations

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
SERVIZI PER TE `div.row > div.col-12 > div.footer__sections__inner > div.btn`
UTILE PER TE `div.row > div.col-12 > div.footer__sections__inner > div.btn`
LINK UTILI `div.row > div.col-12 > div.footer__sections__inner > div.btn`
LINK POLICY `div.row > div.col-12 > div.footer__sections__inner > div.btn`

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Bolletta Online Attiva Infowatt Modifica il recapito Comunica la lettura Contro… `div.row > div.col-12 > div.footer__sections__inner > div#serviziperte`
Conciliazioni e risoluzione delle controversie Negoziazione paritetica `div.row > div.col-12 > div.footer__sections__inner > div#utileperte`
Registrati Contatti Modulistica Modulistica - reclami FAQ - Domande e Risposte … `div.row > div.col-12 > div.footer__sections__inner > div#linkutili`
Credits Legal Certificazioni Privacy Policy Cookie Policy Sitemap `div.row > div.col-12 > div.footer__sections__inner > div#linkpolicy`

ARIA roles must have valid values in order to perform their intended accessibility functions. Learn more about valid ARIA roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
SERVIZIO ELETTRICO NAZIONALE - SERVIZIO DI MAGGIOR TUTELA `div.menu-bar > nav.navbar > div#navbarSupportedContent > div.alt-brand-name--desktop`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Non sei ancora registrato? Registrati! `div#notLoggedBox > div.sen-login-form-inline > div.form-login-group > span#user-password-registration`
Password obbligatoria Recupera la password `div#notLoggedBox > div.sen-login-form-inline > div.form-login-group > span#user-password-recovery`

These are opportunities to improve the legibility of your content.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Informational: a Permissions-Policy directive showing feature -> allowed origins.

Source: MDN Permissions-Policy

Failing Elements
head > meta `head > meta`

Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. Learn more about touch targets.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Bolletta Online `div#serviziperte > div.collapse-footer > li > a`
Attiva Infowatt `div#serviziperte > div.collapse-footer > li > a`
Modifica il recapito `div#serviziperte > div.collapse-footer > li > a`
Comunica la lettura `div#serviziperte > div.collapse-footer > li > a`
Controlla i consumi `div#serviziperte > div.collapse-footer > li > a`
Bolletta in Braille `div#serviziperte > div.collapse-footer > li > a`
Negoziazione paritetica `div#utileperte > div.collapse-footer > li > a`
Registrati `div#linkutili > div.collapse-footer > li > a`
Contatti `div#linkutili > div.collapse-footer > li > a`
Modulistica `div#linkutili > div.collapse-footer > li > a`
Modulistica - reclami `div#linkutili > div.collapse-footer > li > a`
Credits `div#linkpolicy > div.collapse-footer > li > a`
Legal `div#linkpolicy > div.collapse-footer > li > a`
Certificazioni `div#linkpolicy > div.collapse-footer > li > a`
Privacy Policy `div#linkpolicy > div.collapse-footer > li > a`
Cookie Policy `div#linkpolicy > div.collapse-footer > li > a`
Sitemap `div#linkpolicy > div.collapse-footer > li > a`

These items highlight common accessibility best practices.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
CLICCA QUI PER APPROFONDIRE `div.col-12 > div.hero-banner__column > div.hero-banner__column--button > a.btn`
General Data Protection Regulation GDPR `div.row > div.col-12 > div.footer__sections__inner > a.footer__sections__inner--gdpr`

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]`s are contained by their required parent element

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Form elements have associated labels

●ARIA attributes are used as specified for the element's role

●`[aria-hidden="true"]` elements do not contain focusable descendents

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).

●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements

●No element has a `[tabindex]` value greater than 0

●Heading elements appear in a sequentially-descending order

●Document has a main landmark.

●Deprecated ARIA roles were not used

●ARIA IDs are unique

●Uses ARIA roles only on compatible elements

●Identical links have the same purpose.

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○Skip links are focusable.

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○`<video>` elements contain a `<track>` element with `[kind="captions"]`

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Image elements do not have `[alt]` attributes that are redundant text.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / Warning	Source
Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/.	www.servizioelettriconazionale.it/ruxitagentjs_ICA7NVfgqrux_10341260622154106.js line 402, col 261

●Uses HTTPS

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●No browser errors logged to the console

●No issues in the `Issues` panel in Chrome Devtools

●Ensure CSP is effective against XSS attacks

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Use a strong HSTS policy

○Mitigate clickjacking with XFO or CSP

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Crawling and Indexing

Search engines may use `href` attributes on links to crawl websites. Ensure that the `href` attribute of anchor elements links to an appropriate destination, so more pages of the site can be discovered. Learn how to make links crawlable

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uncrawlable Link
Accedi `div > ul.desktop-only > li.nav-item > a.nav-link`
Esci `div.row > div.col-12 > div.sen-logout__actions--buttons > a.btn`

To appear in search results, crawlers need access to your app.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`