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ameba.jp Desktop Performance
69/100
These metrics represent real-world Chrome users experience viewing ameba.jp 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
First Input Delay
Largest Contentful Paint
Cumulative Layout Shift
First Contentful Paint
Metrics
Speed Index34/100 2.8 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.
Largest Contentful Paint51/100 2.4 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More
Total Blocking Time80/100 200 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.
First Contentful Paint88/100 1.0 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.
Time to Interactive88/100 2.6 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.
Cumulative Layout Shift99/100 0.047
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.
Should Fix (14)
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Serve images in next-gen formats
Potential savings of 101 KiB
280 ms
Remove unused JavaScript
Potential savings of 151 KiB
190 ms
Preload key requests
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
Serve static assets with an efficient cache policy
15 resources found
Minimizes main-thread work
1.9 s
Avoids an excessive DOM size
807 elements
Avoid long main-thread tasks
4 long tasks found
User Timing marks and measures
8 user timings
Keep request counts low and transfer sizes small
79 requests • 1,062 KiB
Avoid chaining critical requests
6 chains found
Largest Contentful Paint element
1 element found
Avoid large layout shifts
5 elements found
Passed Audits (16)
Avoid multiple page redirects
Minimize third-party usage
Third-party code blocked the main thread for 0 ms
Uses passive listeners to improve scrolling performance
Eliminate render-blocking resources
Potential savings of 0 ms
Properly size images
Defer offscreen images
Use video formats for animated content
Minify JavaScript
Remove unused CSS
Avoids enormous network payloads
Total size was 1,062 KiB
Enable text compression
Initial server response time was short
Root document took 580 ms
Minify CSS
Preconnect to required origins
JavaScript execution time
0.9 s
Efficiently encode images
Potential savings of 9 KiB
ameba.jp 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 (10)
Document has a `<title>` element
Links have descriptive text
Document has a meta description
Page isn’t blocked from indexing
Document avoids plugins
Document has a valid `hreflang`
Page has successful HTTP status code
Image elements have `[alt]` attributes
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Links are crawlable
ameba.jp Desktop Best Practices
77/100
These checks highlight opportunities to improve the overall code health of ameba.jp 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
Does not use HTTPS
1 insecure request found
Links to cross-origin destinations are unsafe
User Experience
Displays images with incorrect aspect ratio
Passed Audits (11)
Avoids front-end JavaScript libraries with known security vulnerabilities
Avoids requesting the notification permission on page load
Page has the HTML doctype
Avoids Application Cache
Detected JavaScript libraries
Avoids requesting the geolocation permission on page load
No browser errors logged to the console
Properly defines charset
Serves images with appropriate resolution
Avoids deprecated APIs
Allows users to paste into password fields
ameba.jp Desktop Progressive Web App
26/100
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
Does not set a theme color for the address bar.
Does not provide a valid `apple-touch-icon`
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
Page load is not fast enough on mobile networks
Interactive on simulated mobile network at 12.7 s
Current page does not respond with a 200 when offline
`start_url` does not respond with a 200 when offline
Passed Audits (5)
Redirects HTTP traffic to HTTPS
Contains some content when JavaScript is not available
Registers a service worker that controls page and `start_url`
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
Configured for a custom splash screen
ameba.jp Desktop Accessibility
96/100
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 (2)
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
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)
`[role]`s have all required `[aria-*]` attributes
`[aria-*]` attributes are valid and not misspelled
Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
Document has a `<title>` element
The page contains a heading, skip link, or landmark region
`[role]`s are contained by their required parent element
`[aria-*]` attributes match their roles
`[role]` values are valid
`[aria-*]` attributes have valid values
Links have a discernible name
`[aria-hidden="true"]` is not present on the document `<body>`
Form elements have associated labels
List items (`<li>`) are contained within `<ul>` or `<ol>` parent elements
Image elements have `[alt]` attributes
`<frame>` or `<iframe>` elements have a title
`<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.
Buttons have an accessible name
`[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
Heading elements appear in a sequentially-descending order
Desktop Speed
78/100
These checks analyze the performance of ameba.jp 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 (5)
Eliminate render-blocking JavaScript and CSS in above-the-fold content
Leverage browser caching
Optimize images
Prioritize visible content
Minify JavaScript
Passed Audits (5)
Avoid landing page redirects
Enable compression
Reduce server response time
Minify CSS
Minify HTML
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