Ozon.ru
ozon.ru Mobile Performance
17/100
These metrics represent real-world Chrome users experience viewing ozon.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 Contentful Paint
First Input Delay
Cumulative Layout Shift
Largest Contentful Paint
Metrics
Largest Contentful Paint0/100 10.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Total Blocking Time0/100 3,830 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Time to Interactive5/100 16.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Speed Index10/100 10.0 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
First Contentful Paint64/100 3.5 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Cumulative Layout Shift100/100 0
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (15)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Remove unused JavaScript
Potential savings of 313 KiB
3,730 ms
Avoid multiple page redirects
Potential savings of 1,110 ms
1,110 ms
Eliminate render-blocking resources
Potential savings of 1,110 ms
1,107 ms
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Reduce the impact of third-party code
Third-party code blocked the main thread for 960 ms
Avoid `document.write()`
Minimize main-thread work
10.0 s
Reduce JavaScript execution time
6.3 s
Serve static assets with an efficient cache policy
16 resources found
Avoid an excessive DOM size
905 elements
Keep request counts low and transfer sizes small
181 requests • 1,681 KiB
Avoid chaining critical requests
16 chains found
User Timing marks and measures
1 user timing
Avoid long main-thread tasks
20 long tasks found
Avoid large layout shifts
1 element found
Largest Contentful Paint element
1 element found
Passed Audits (15)
Preconnect to required origins
Minify JavaScript
Potential savings of 7 KiB
Serve images in next-gen formats
Uses passive listeners to improve scrolling performance
Initial server response time was short
Root document took 440 ms
Defer offscreen images
Properly size images
Efficiently encode images
Enable text compression
Minify CSS
Avoids enormous network payloads
Total size was 1,681 KiB
Use video formats for animated content
All text remains visible during webfont loads
Remove unused CSS
Preload key requests
ozon.ru Mobile SEO
93/100
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 (1)
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
Passed Audits (13)
Document uses legible font sizes
97.71% legible text
Document avoids plugins
Links have descriptive text
robots.txt is valid
Tap targets are sized appropriately
100% appropriately sized tap targets
Page isn’t blocked from indexing
Page has successful HTTP status code
Document has a `<title>` element
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Links are crawlable
Document has a valid `hreflang`
Document has a valid `rel=canonical`
Document has a meta description
ozon.ru Mobile Best Practices
69/100
These checks highlight opportunities to improve the overall code health of ozon.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 (4)
General
Browser errors were logged to the console
Trust and Safety
Does not use HTTPS
1 insecure request found
Links to cross-origin destinations are unsafe
User Experience
Serves images with low resolution
Passed Audits (10)
Detected JavaScript libraries
Avoids Application Cache
Avoids deprecated APIs
Avoids front-end JavaScript libraries with known security vulnerabilities
Avoids requesting the geolocation permission on page load
Page has the HTML doctype
Avoids requesting the notification permission on page load
Properly defines charset
Allows users to paste into password fields
Displays images with correct aspect ratio
ozon.ru Mobile Progressive Web App
29/100
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 (8)
PWA Optimized
Manifest doesn't have a maskable icon
Is not configured for a custom splash screen
Does not set a theme color for the address bar.
Installable
Web app manifest does not meet the installability requirements
Does not use HTTPS
1 insecure request found
Fast and reliable
Current page does not respond with a 200 when offline
Page load is not fast enough on mobile networks
Interactive at 16.8 s
`start_url` does not respond with a 200 when offline
Passed Audits (6)
Redirects HTTP traffic to HTTPS
Provides a valid `apple-touch-icon`
Content is sized correctly for the viewport
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Contains some content when JavaScript is not available
Registers a service worker that controls page and `start_url`
ozon.ru Mobile Accessibility
72/100
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 (5)
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.
Links do not have a discernible name
Image elements do not have `[alt]` attributes
Best practices
These items highlight common accessibility best practices.
`[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
`<html>` element does not have a `[lang]` attribute
Passed Audits (11)
`[aria-hidden="true"]` is not present on the document `<body>`
`[id]` attributes on active, focusable elements are unique
Buttons have an accessible name
`[aria-*]` attributes are valid and not misspelled
Form elements have associated labels
Document has a `<title>` element
`[aria-*]` attributes match their roles
The page contains a heading, skip link, or landmark region
No element has a `[tabindex]` value greater than 0
Heading elements appear in a sequentially-descending order
`[aria-*]` attributes have valid values
Mobile Usability
98/100
These checks validate how easily a visitor can use ozon.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
54/100
These checks analyze the performance of ozon.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 (5)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Optimize images
Leverage browser caching
Minify JavaScript
Enable compression
Passed Audits (5)
Avoid landing page redirects
Reduce server response time
Minify CSS
Minify HTML
Prioritize visible content
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