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ameba.jp Mobile Performance
35/100
These metrics represent real-world Chrome users experience viewing ameba.jp 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
First Contentful Paint
Cumulative Layout Shift
Largest Contentful Paint
Metrics
Total Blocking Time2/100 2,080 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
Largest Contentful Paint24/100 5.2 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Speed Index37/100 6.6 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Time to Interactive52/100 7.1 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
First Contentful Paint66/100 3.3 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 (16)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Properly size images
Potential savings of 2,310 KiB
11,520 ms
Serve images in next-gen formats
Potential savings of 1,497 KiB
7,650 ms
Efficiently encode images
Potential savings of 1,168 KiB
6,150 ms
Defer offscreen images
Potential savings of 2,413 KiB
600 ms
Remove unused JavaScript
Potential savings of 43 KiB
300 ms
Preload key requests
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Ensure text remains visible during webfont load
Serve static assets with an efficient cache policy
20 resources found
Minimize main-thread work
4.4 s
Reduce JavaScript execution time
1.6 s
Avoid an excessive DOM size
852 elements
Avoid enormous network payloads
Total size was 2,751 KiB
Avoid chaining critical requests
6 chains found
Keep request counts low and transfer sizes small
35 requests • 2,751 KiB
Avoid long main-thread tasks
10 long tasks found
Largest Contentful Paint element
1 element found
Passed Audits (12)
Initial server response time was short
Root document took 230 ms
Minify CSS
Minimize third-party usage
Third-party code blocked the main thread for 10 ms
Avoid multiple page redirects
Eliminate render-blocking resources
Potential savings of 30 ms
Uses passive listeners to improve scrolling performance
Remove unused CSS
Potential savings of 10 KiB
Minify JavaScript
Enable text compression
Use video formats for animated content
Avoids `document.write()`
Preconnect to required origins
ameba.jp Mobile 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
Document avoids plugins
Document has a `<title>` element
Tap targets are sized appropriately
100% appropriately sized tap targets
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Document has a valid `hreflang`
Document has a meta description
Image elements have `[alt]` attributes
Links are crawlable
Page isn’t blocked from indexing
Links have descriptive text
Document uses legible font sizes
86.57% legible text
ameba.jp Mobile Best Practices
69/100
These checks highlight opportunities to improve the overall code health of ameba.jp 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)
User Experience
Displays images with incorrect aspect ratio
Serves images with low resolution
Trust and Safety
Does not use HTTPS
1 insecure request found
Links to cross-origin destinations are unsafe
Passed Audits (10)
Detected JavaScript libraries
Properly defines charset
Allows users to paste into password fields
No browser errors logged to the console
Avoids deprecated APIs
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Avoids Application Cache
Page has the HTML doctype
Avoids front-end JavaScript libraries with known security vulnerabilities
ameba.jp Mobile Progressive Web App
61/100
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 (5)
PWA Optimized
Manifest doesn't have a maskable icon
Installable
Web app manifest does not meet the installability requirements
Does not use HTTPS
1 insecure request found
Fast and reliable
`start_url` does not respond with a 200 when offline
Current page does not respond with a 200 when offline
Passed Audits (9)
Configured for a custom splash screen
Contains some content when JavaScript is not available
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Redirects HTTP traffic to HTTPS
Provides a valid `apple-touch-icon`
Content is sized correctly for the viewport
Page load is fast enough on mobile networks
Sets a theme color for the address bar.
Registers a service worker that controls page and `start_url`
ameba.jp Mobile Accessibility
88/100
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 (4)
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.
Buttons do not have an accessible name
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.
Contrast
These are opportunities to improve the legibility of your content.
Background and foreground colors do not have a sufficient contrast ratio.
Passed Audits (19)
`[role]`s are contained by their required parent element
Document has a `<title>` element
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
The page contains a heading, skip link, or landmark region
`[role]` values are valid
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
`[aria-*]` attributes match their roles
Image elements have `[alt]` attributes
`[aria-*]` attributes are valid and not misspelled
`[aria-*]` attributes have valid values
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
`<html>` element has a `[lang]` attribute
`[aria-hidden="true"]` is not present on the document `<body>`
Heading elements appear in a sequentially-descending order
ARIA IDs are unique
Form elements have associated labels
Links have a discernible name
`<html>` element has a valid value for its `[lang]` attribute
`[role]`s have all required `[aria-*]` attributes
Mobile Usability
100/100
These checks validate how easily a visitor can use ameba.jp 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).
Passed Audits (5)
Avoid plugins
Configure the viewport
Size content to viewport
Size tap targets appropriately
Use legible font sizes
Mobile Speed
72/100
These checks analyze the performance of ameba.jp 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)
Avoid landing page redirects
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Optimize images
Reduce server response time
Leverage browser caching
Passed Audits (5)
Enable compression
Minify CSS
Minify HTML
Minify JavaScript
Prioritize visible content
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