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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 Desktop Performance
45/100
These metrics represent real-world Chrome users experience viewing nicovideo.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

Cumulative Layout Shift

First Input Delay

First Contentful Paint

Largest Contentful Paint

Metrics


Total Blocking Time21/100 590 ms
Sum of all time periods between FCP and Time to Interactive, when task length exceeded 50ms, expressed in milliseconds. Learn more.

Speed Index31/100 2.8 s
Speed Index shows how quickly the contents of a page are visibly populated. Learn more.

Largest Contentful Paint34/100 3.0 s
Largest Contentful Paint marks the time at which the largest text or image is painted. Learn More

Time to Interactive65/100 3.8 s
Time to interactive is the amount of time it takes for the page to become fully interactive. Learn more.

First Contentful Paint80/100 1.1 s
First Contentful Paint marks the time at which the first text or image is painted. Learn more.

Cumulative Layout Shift100/100 0.034
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 Desktop 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.
Crawling and Indexing

To appear in search results, crawlers need access to your app.

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.

nicovideo.jp Desktop Best Practices
85/100
These checks highlight opportunities to improve the overall code health of nicovideo.jp 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 Desktop Progressive Web App
11/100
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.
Installable

Fast and reliable

PWA Optimized

nicovideo.jp Desktop Accessibility
56/100
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.

Tables and lists

These are opportunities to to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

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.

Desktop Speed
67/100
These checks analyze the performance of nicovideo.jp on desktop 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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