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.

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
www.unipd.it/_next/static/media/material-icons-outlined.1d4a6ba6.woff2	185 ms
www.unipd.it/assets/fonts/Inter/Inter-VariableFont_opsz,wght.ttf	160 ms
www.unipd.it/assets/fonts/NotoSerif/NotoSerif-BoldItalic.ttf	125 ms

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:123.721 source:map[column:7127 line:1 type:source-location url:https://www.unipd.it/_next/static/chunks/da8a57391d249a2f.js urlProvider:network]]]

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]

items: [map[reflowTime:67.213 source:map[column:5488 line:0 type:source-location url:https://www.unipd.it/_next/static/chunks/e770c8997a7acf88.js urlProvider:network]] map[reflowTime:46.03 source:map[column:27527 line:0 type:source-location url:https://www.unipd.it/_next/static/chunks/e770c8997a7acf88.js urlProvider:network]] map[reflowTime:2.468 source:map[column:33437 line:0 type:source-location url:https://www.unipd.it/_next/static/chunks/e770c8997a7acf88.js urlProvider:network]] map[reflowTime:7.543 source:map[column:26834 line:0 type:source-location url:https://www.unipd.it/_next/static/chunks/bc852d360188fa30.js urlProvider:network]] map[reflowTime:1.032 source:map[column:34052 line:0 type:source-location url:https://www.unipd.it/_next/static/chunks/37973d5ebc35678b.js urlProvider:network]] map[reflowTime:0.324 source:map[column:45448 line:0 type:source-location url:https://www.unipd.it/_next/static/chunks/e770c8997a7acf88.js urlProvider:network]] map[reflowTime:0.737 source:map[column:20910 line:0 type:source-location url:https://www.unipd.it/_next/static/chunks/e770c8997a7acf88.js urlProvider:network]] map[reflowTime:0.282 source:map[column:376 line:731 type:source-location url:https://www.googletagmanager.com/gtm.js?id=GTM-NC7RRGD urlProvider:network]] map[reflowTime:6.331 source:map[type:text value:[unattributed]]]]

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

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
ingestion.webanalytics.italia.it/matomo.js	86400.0 s	65.6 KiB
f.vimeocdn.com/p/4.46.43/js/player.module.js	1209600.0 s	211.3 KiB
cdn.eye-able.com/public/js/eyeAble.js	604800.0 s	144.8 KiB
f.vimeocdn.com/p/4.46.43/js/vendor.module.js	1209600.0 s	93.5 KiB
f.vimeocdn.com/p/4.46.43/css/player.css	1209600.0 s	23.9 KiB
cdn.eye-able.com/configs/www.unipd.it.js	600.0 s	1.6 KiB
cdn.eye-able.com/public/css/eyeAble.1.17.17.min.css	604800.0 s	13.6 KiB
cdn.eye-able.com/public/lang/eyeAble_lang_it.js	604800.0 s	7.5 KiB
cdn.eye-able.com/public/images/eye-able_whitelabel-icon_2.svg	604800.0 s	2.5 KiB
cdn.eye-able.com/public/images/eye-able-active-check.svg	604800.0 s	1.7 KiB
f.vimeocdn.com/p/4.46.43/js/player.module.js	1209600.0 s	0 B
f.vimeocdn.com/p/4.46.43/js/vendor.module.js	1209600.0 s	0 B
f.vimeocdn.com/p/4.46.43/css/player.css	1209600.0 s	0 B

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: 695 ms

URL	Time Spent
unipd.it/	306 ms
www.unipd.it/	389 ms
www.unipd.it/	0.0 ms

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

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.

Diagnostics

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: 70 ms 563.7 KiB

URL	Transfer Size	Est Savings
cdn.eye-able.com/public/js/eyeAble.js	144.1 KiB	99.3 KiB
www.unipd.it/_next/static/chunks/99b45d2424516508.js	122.9 KiB	94.0 KiB
www.googletagmanager.com/gtag/js?id=G-B3WV5DRLH0&cx=c&gtm=4e64k0	134.7 KiB	84.4 KiB
www.googletagmanager.com/gtag/destination?id=AW-11111625403&cx=c&gtm=4e64k0	143.4 KiB	66.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-NC7RRGD	150.5 KiB	60.6 KiB
www.googletagmanager.com/gtag/js?id=AW-608956197&cx=c&gtm=4e64k0	174.3 KiB	59.4 KiB
ingestion.webanalytics.italia.it/matomo.js	64.3 KiB	36.3 KiB
www.unipd.it/_next/static/chunks/ee00070b57b20554.js	39.9 KiB	22.0 KiB
www.unipd.it/_next/static/chunks/c49deea11a2ca976.js	21.2 KiB	21.1 KiB
www.unipd.it/_next/static/chunks/da8a57391d249a2f.js	65.8 KiB	20.2 KiB

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Script Evaluation	1.1 s
Style & Layout	466 ms
Other	443 ms
Script Parsing & Compilation	190 ms
Parse HTML & CSS	87 ms
Rendering	60 ms
Garbage Collection	34 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable
The page has an unload handler in a sub frame.	Actionable
Pages whose main resource has cache-control:no-store cannot enter back/forward cache.	Not actionable
Back/forward cache is disabled because some JavaScript network request received resource with Cache-Control: no-store header.	Not actionable

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: 0.0 ms 10.8 KiB

URL	Transfer Size	Est Savings
cdn.eye-able.com/public/css/eyeAble.1.17.17.min.css	12.9 KiB	10.8 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
/exp=1776895383~acl=/3257fa98-473d-49bb-b4e1-ca32e77ffcec...	3.6 MiB
/exp=1776895383~acl=/3257fa98-473d-49bb-b4e1-ca32e77ffcec...	3.5 MiB
/exp=1776895383~acl=/3257fa98-473d-49bb-b4e1-ca32e77ffcec...	3.1 MiB
/exp=1776895383~acl=/3257fa98-473d-49bb-b4e1-ca32e77ffcec...	2.9 MiB
www.unipd.it/assets/fonts/Inter/Inter-VariableFont_opsz,wght.ttf	455.8 KiB
www.unipd.it/	333.1 KiB
www.unipd.it/assets/fonts/NotoSerif/NotoSerif-BoldItalic.ttf	270.1 KiB
f.vimeocdn.com/p/4.46.43/js/player.module.js	211.3 KiB
www.googletagmanager.com/gtag/js?id=AW-608956197&cx=c&gtm=4e64k0	174.3 KiB
www.unipd.it/_next/static/media/material-icons-outlined.1d4a6ba6.woff2	152.3 KiB

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

●Layout shift culprits

●Optimize DOM size

●Improve image delivery

●LCP breakdown

●Modern HTTP

●Render blocking requests

●Optimize viewport for mobile

●Minify CSS

●Minify JavaScript

●User Timing marks and measures 10 user timings

●JavaScript execution time 1.1 s

●Avoid long main-thread tasks 4 long tasks found

●Avoid non-composited animations 2 animated elements found

●Image elements have explicit `width` and `height`

●Network Requests

●Network Round Trip Times 70 ms

●Server Backend Latencies 160 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Initial server response time was short Root document took 290 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

○LCP request discovery

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.

Navigation

Properly ordered headings that do not skip levels convey the semantic structure of the page, making it easier to navigate and understand when using assistive technologies. Learn more about heading order.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Campus multisede `div.MuiStack-root > div.MuiBox-root > div.MuiPaper-root > h3.MuiAccordion-heading`

These are opportunities to improve keyboard navigation in your application.

○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-*]` attributes match their roles

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

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

●`[role]` values are valid

●`[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

●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.

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

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

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

●ARIA input fields have accessible names

●Elements use only permitted ARIA attributes

●Background and foreground colors have a sufficient contrast ratio

●Document has a `<title>` element

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

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

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

●Links have a discernible name

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

●Touch targets have sufficient size and spacing.

●`[lang]` attributes have a valid value

●Document has a main landmark.

●Deprecated ARIA roles were not used

●ARIA IDs are unique

●Identical links have the same purpose.

●Elements with visible text labels have matching accessible names.

○`[accesskey]` values are unique

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

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

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

○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

○`<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

○Links are distinguishable without relying on color.

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

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

○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.

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

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

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○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

Trust and Safety

All sites should be protected with HTTPS, even ones that don't handle sensitive data. This includes avoiding mixed content, where some resources are loaded over HTTP despite the initial request being served over HTTPS. HTTPS prevents intruders from tampering with or passively listening in on the communications between your app and your users, and is a prerequisite for HTTP/2 and many new web platform APIs. Learn more about HTTPS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Insecure URL	Request Resolution
www.unipd.it/	Allowed

User Experience

Image display dimensions should match natural aspect ratio. Learn more about image aspect ratio.

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Aspect Ratio (Displayed)	Aspect Ratio (Actual)
div.swiper-slide > div.CardProgetti-module-scss-module__xGILLa__cardProgettiBox > div.CardProgetti-module-scss-module__xGILLa__waveBg > img.CardProgetti-module-scss-module__xGILLa__waveBgImage `div.swiper-slide > div.CardProgetti-module-scss-module__xGILLa__cardProgettiBox > div.CardProgetti-module-scss-module__xGILLa__waveBg > img.CardProgetti-module-scss-module__xGILLa__waveBgImage`	www.unipd.it/_next/image?url=%2Fassets%2Fsvg%2FWave%2FWave.svg&w=1920&q=75	1826 x 983 (1.86)	2151 x 693 (3.10)
div.swiper-slide > div.CardProgetti-module-scss-module__xGILLa__cardProgettiBox > div.CardProgetti-module-scss-module__xGILLa__waveBg > img.CardProgetti-module-scss-module__xGILLa__waveBgImage `div.swiper-slide > div.CardProgetti-module-scss-module__xGILLa__cardProgettiBox > div.CardProgetti-module-scss-module__xGILLa__waveBg > img.CardProgetti-module-scss-module__xGILLa__waveBgImage`	www.unipd.it/_next/image?url=%2Fassets%2Fsvg%2FWave%2FWave.svg&w=1920&q=75	1826 x 983 (1.86)	2151 x 693 (3.10)
div.swiper-slide > div.CardProgetti-module-scss-module__xGILLa__cardProgettiBox > div.CardProgetti-module-scss-module__xGILLa__waveBg > img.CardProgetti-module-scss-module__xGILLa__waveBgImage `div.swiper-slide > div.CardProgetti-module-scss-module__xGILLa__cardProgettiBox > div.CardProgetti-module-scss-module__xGILLa__waveBg > img.CardProgetti-module-scss-module__xGILLa__waveBgImage`	www.unipd.it/_next/image?url=%2Fassets%2Fsvg%2FWave%2FWave.svg&w=1920&q=75	1826 x 983 (1.86)	2151 x 693 (3.10)
section#a84c31e2-9f92-4ab8-915d-6dcb8e02f9b7 > div > div.MuiContainer-root > img.Informativo-module-scss-module__GW3NjW__informativoNumberFullCircleBG `section#a84c31e2-9f92-4ab8-915d-6dcb8e02f9b7 > div > div.MuiContainer-root > img.Informativo-module-scss-module__GW3NjW__informativoNumberFullCircleBG`	/_next/image?url=%2Fassets%2Fsvg%2FCerchi%2Fcerchio-pieno...	812 x 500 (1.62)	812 x 822 (0.99)
Unipd Logo `div.Header-module-scss-module__6R4jra__mainMenuContainer > a > div.MuiStack-root > img`	/_next/image?url=https%3A%2F%2Fwwwassets.unipd.it%2Fsites...	208 x 93 (2.24)	211 x 69 (3.06)
Unipd Logo `div.Footer-module-scss-module__dU5k9q__firstColumn > div.Footer-module-scss-module__dU5k9q__logo > a > img`	/_next/image?url=https%3A%2F%2Fwwwassets.unipd.it%2Fsites...	202 x 92 (2.20)	211 x 69 (3.06)

General

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Map URL
www.unipd.it/
cdn.eye-able.com/public/js/eyeAble.js	cdn.eye-able.com/public/js/eyeAble.js.map

●Avoids deprecated APIs

●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

●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

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate clickjacking with XFO or CSP

●Mitigate DOM-based XSS with Trusted Types

○Redirects HTTP traffic to HTTPS

○Detected JavaScript libraries

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 are unable to include your pages in search results if they don't have permission to crawl them. Learn more about crawler directives.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Blocking Directive Source
`https://www.unipd.it/robots.txt`

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

○Structured data is valid

●Document has a `<title>` element

●Document has a meta description

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

○Document has a valid `rel=canonical`