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libero.it Desktop Performance
81/100
These metrics represent real-world Chrome users experience viewing libero.it web page. Reports are focused on loading performance and other critical factors that most affect user experience. Follow our guide to track, optimize, and improve the quality of your web pages.
User Loading Experience
Largest Contentful Paint
First Contentful Paint
First Input Delay
Cumulative Layout Shift
Metrics
Cumulative Layout Shift23/100 0.42
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Speed Index44/100 2.4 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Largest Contentful Paint73/100 1.7 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Total Blocking Time100/100 50 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
First Contentful Paint100/100 0.5 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Time to Interactive100/100 1.1 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Should Fix (14)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Reduce initial server response time
Root document took 1,810 ms
1,212 ms
Serve images in next-gen formats
Potential savings of 175 KiB
160 ms
Remove unused JavaScript
Potential savings of 233 KiB
150 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Does not use passive listeners to improve scrolling performance
Avoid `document.write()`
Avoid an excessive DOM size
1,920 elements
Serve static assets with an efficient cache policy
40 resources found
Minimize main-thread work
2.1 s
Keep request counts low and transfer sizes small
152 requests • 1,645 KiB
Avoid chaining critical requests
1 chain found
User Timing marks and measures
6 user timings
Avoid long main-thread tasks
4 long tasks found
Avoid large layout shifts
5 elements found
Largest Contentful Paint element
1 element found
Passed Audits (16)
Eliminate render-blocking resources
Minify JavaScript
Potential savings of 7 KiB
JavaScript execution time
0.3 s
Minimize third-party usage
Third-party code blocked the main thread for 0 ms
Efficiently encode images
Potential savings of 73 KiB
Preload key requests
Minify CSS
Use video formats for animated content
Defer offscreen images
Properly size images
Potential savings of 50 KiB
Avoids enormous network payloads
Total size was 1,645 KiB
Preconnect to required origins
All text remains visible during webfont loads
Remove unused CSS
Avoid multiple page redirects
Potential savings of 190 ms
Enable text compression
Potential savings of 3 KiB
libero.it Desktop SEO
100/100
These checks ensure that your page is optimized for search engine results ranking. There are additional factors Lighthouse does not check that may affect your search ranking. Learn more. Run these additional validators on your site to check additional SEO best practices.
Passed Audits (12)
Page has successful HTTP status code
Links are crawlable
robots.txt is valid
Page isn’t blocked from indexing
Document has a meta description
Document has a `<title>` element
Document has a valid `rel=canonical`
Document avoids plugins
Links have descriptive text
Image elements have `[alt]` attributes
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a valid `hreflang`
libero.it Desktop Best Practices
69/100
These checks highlight opportunities to improve the overall code health of libero.it page. Current recommendations will help to make your page fast and secure, to create a good user experience and to avoid deprecated technologies.
Should Fix (4)
Trust and Safety
Links to cross-origin destinations are unsafe
Does not use HTTPS
1 insecure request found
General
Uses deprecated APIs
1 warning found
Browser errors were logged to the console
Passed Audits (10)
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Detected JavaScript libraries
Page has the HTML doctype
Properly defines charset
Avoids front-end JavaScript libraries with known security vulnerabilities
Allows users to paste into password fields
Serves images with appropriate resolution
Avoids Application Cache
Displays images with correct aspect ratio
libero.it Desktop Progressive Web App
63/100
These checks validate the aspects of a Progressive Web App. Learn more. These checks are required by the baseline PWA Checklist but are not automatically checked by Lighthouse. They do not affect your score but it's important that you verify them manually.
Should Fix (3)
PWA Optimized
Manifest doesn't have a maskable icon
Fast and reliable
Page load is not fast enough on mobile networks
Interactive on simulated mobile network at 11.3 s
Installable
Does not use HTTPS
1 insecure request found
Passed Audits (10)
Provides a valid `apple-touch-icon`
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Contains some content when JavaScript is not available
Sets a theme color for the address bar.
Configured for a custom splash screen
`start_url` responds with a 200 when offline
Current page responds with a 200 when offline
Registers a service worker that controls page and `start_url`
Web app manifest meets the installability requirements
libero.it Desktop Accessibility
85/100
These checks highlight opportunities to improve the accessibility of your web app. Only a subset of accessibility issues can be automatically detected so manual testing is also encouraged. These items address areas which an automated testing tool cannot cover. Learn more in our guide on conducting an accessibility review.
Should Fix (7)
Best practices
These items highlight common accessibility best practices.
The document uses `<meta http-equiv="refresh">`
ARIA
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.
`[aria-hidden="true"]` elements contain focusable descendents
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
`<frame>` or `<iframe>` elements do not have a title
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
`[id]` attributes on active, focusable elements are not unique
Heading elements are not in a sequentially-descending order
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (21)
`[aria-hidden="true"]` is not present on the document `<body>`
Buttons have an accessible name
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Image elements have `[alt]` attributes
Form elements have associated labels
`[role]`s have all required `[aria-*]` attributes
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
`[role]` values are valid
`[aria-*]` attributes have valid values
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
`[role]`s are contained by their required parent element
`<html>` element has a valid value for its `[lang]` attribute
`[aria-*]` attributes are valid and not misspelled
The page contains a heading, skip link, or landmark region
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[aria-*]` attributes match their roles
Desktop Speed
69/100
These checks analyze the performance of libero.it on desktop devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (8)
Optimize images
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Prioritize visible content
Leverage browser caching
Enable compression
Reduce server response time
Minify JavaScript
Minify HTML
Passed Audits (2)
Avoid landing page redirects
Minify CSS
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