4pda.ru 4PDA
4PDA
4pda.ru Mobile Performance
30/100
These metrics represent real-world Chrome users experience viewing 4pda.ru on mobile devices. 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
First Input Delay
Largest Contentful Paint
Cumulative Layout Shift
First Contentful Paint
Metrics
Total Blocking Time6/100 1,490 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Speed Index16/100 8.7 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive18/100 11.7 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Largest Contentful Paint30/100 4.9 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Cumulative Layout Shift56/100 0.224
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
First Contentful Paint90/100 2.3 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Should Fix (19)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Defer offscreen images
Potential savings of 1,206 KiB
4,950 ms
Serve images in next-gen formats
Potential savings of 816 KiB
3,510 ms
Efficiently encode images
Potential savings of 295 KiB
1,080 ms
Eliminate render-blocking resources
Potential savings of 1,030 ms
1,028 ms
Remove unused JavaScript
Potential savings of 125 KiB
750 ms
Remove unused CSS
Potential savings of 29 KiB
150 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Avoid `document.write()`
Ensure text remains visible during webfont load
Reduce the impact of third-party code
Third-party code blocked the main thread for 980 ms
Does not use passive listeners to improve scrolling performance
Minimize main-thread work
11.5 s
Reduce JavaScript execution time
5.6 s
Serve static assets with an efficient cache policy
56 resources found
Avoid an excessive DOM size
1,458 elements
Largest Contentful Paint element
1 element found
Avoid large layout shifts
5 elements found
Avoid chaining critical requests
4 chains found
Avoid long main-thread tasks
20 long tasks found
Keep request counts low and transfer sizes small
87 requests • 1,918 KiB
Passed Audits (10)
Enable text compression
Avoid multiple page redirects
Potential savings of 630 ms
Avoids enormous network payloads
Total size was 1,918 KiB
Preconnect to required origins
Minify CSS
Potential savings of 2 KiB
Minify JavaScript
Use video formats for animated content
Properly size images
Preload key requests
Initial server response time was short
Root document took 600 ms
4pda.ru Mobile SEO
83/100
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.
Should Fix (3)
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Links are not crawlable
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Image elements do not have `[alt]` attributes
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. Learn more.
Tap targets are not sized appropriately
93% appropriately sized tap targets
Passed Audits (10)
Links have descriptive text
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Page has successful HTTP status code
Document has a valid `hreflang`
Document avoids plugins
robots.txt is valid
Document uses legible font sizes
99.99% legible text
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
4pda.ru Mobile Best Practices
77/100
These checks highlight opportunities to improve the overall code health of 4pda.ru mobile 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 (3)
Trust and Safety
Includes front-end JavaScript libraries with known security vulnerabilities
4 vulnerabilities detected
Does not use HTTPS
1 insecure request found
User Experience
Serves images with low resolution
Passed Audits (11)
Page has the HTML doctype
Properly defines charset
Avoids deprecated APIs
Allows users to paste into password fields
Displays images with correct aspect ratio
Avoids requesting the geolocation permission on page load
No browser errors logged to the console
Detected JavaScript libraries
Avoids requesting the notification permission on page load
Avoids Application Cache
Links to cross-origin destinations are safe
4pda.ru Mobile Progressive Web App
25/100
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 (9)
PWA Optimized
Manifest doesn't have a maskable icon
Does not set a theme color for the address bar.
Is not configured for a custom splash screen
Installable
Web app manifest does not meet the installability requirements
Does not use HTTPS
1 insecure request found
Does not register a service worker that controls page and `start_url`
Fast and reliable
Current page does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive at 11.7 s
`start_url` does not respond with a 200 when offline
Passed Audits (5)
Contains some content when JavaScript is not available
Redirects HTTP traffic to HTTPS
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Content is sized correctly for the viewport
Provides a valid `apple-touch-icon`
4pda.ru Mobile Accessibility
68/100
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 (6)
Tables and lists
These are opportunities to to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
List items (`<li>`) are not contained within `<ul>` or `<ol>` parent elements.
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.
Buttons do not have an accessible name
Image elements do not have `[alt]` attributes
Links do not have a discernible name
Form elements do not have associated labels
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (14)
`[role]` values are valid
`<html>` element has a `[lang]` attribute
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
The page contains a heading, skip link, or landmark region
`[role]`s are contained by their required parent element
`<html>` element has a valid value for its `[lang]` attribute
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s have all required `[aria-*]` attributes
`[id]` attributes on active, focusable elements are unique
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
Heading elements appear in a sequentially-descending order
`[aria-hidden="true"]` elements do not contain focusable descendents
Document has a `<title>` element
`[aria-hidden="true"]` is not present on the document `<body>`
Mobile Usability
99/100
These checks validate how easily a visitor can use 4pda.ru on a mobile device. Test results include a list of any mobile usability problems. Mobile usability problems are issues that can affect a user that visits the page on a mobile (small screen) device, including small font sizes (which are hard to read on a small screen).
Should Fix (1)
Size tap targets appropriately
Passed Audits (4)
Avoid plugins
Configure the viewport
Size content to viewport
Use legible font sizes
Mobile Speed
56/100
These checks analyze the performance of 4pda.ru on mobile devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
Should Fix (4)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Optimize images
Prioritize visible content
Leverage browser caching
Passed Audits (6)
Avoid landing page redirects
Enable compression
Reduce server response time
Minify CSS
Minify HTML
Minify JavaScript
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