Nicovideo.jp niconico(ニコニコ)

日本最大級の動画サービスniconico(ニコニコ)。動画にコメントを付けて楽しむニコニコ動画や、生放送番組にリアルタイムでコメントを付けられるニコニコ生放送のほか、画像・イラスト・電子書籍・マンガ・最新ニュース・ブログ・3Dコンテンツなど、エンターテイメントを全て無料で楽しめる!

nicovideo.jp Mobile Performance
15/100
These metrics represent real-world Chrome users experience viewing nicovideo.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


Largest Contentful Paint0/100 15.8 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More

Time to Interactive1/100 24.5 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.

Total Blocking Time1/100 2,240 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.

Speed Index3/100 12.5 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.

First Contentful Paint61/100 3.6 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.

Cumulative Layout Shift98/100 0.059
Cumulative Layout Shift measures the movement of visible elements within the viewport. Learn more.

Opportunities

These suggestions can help your page load faster. They don't directly affect the Performance score.

Diagnostics

More information about the performance of your application. These numbers don't directly affect the Performance score.

nicovideo.jp 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.
Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

nicovideo.jp Mobile Best Practices
85/100
These checks highlight opportunities to improve the overall code health of nicovideo.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.
Trust and Safety

General

nicovideo.jp 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.
Fast and reliable

Installable

PWA Optimized

nicovideo.jp Mobile Accessibility
61/100
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.
Contrast

These are opportunities to improve the legibility of your content.

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.

Best practices

These items highlight common accessibility best practices.

Mobile Usability
77/100
These checks validate how easily a visitor can use nicovideo.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).
Mobile Speed
41/100
These checks analyze the performance of nicovideo.jp on mobile devices and return PageSpeed score and information on how to improve the load time. What makes a good Progressive Web App?
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