nicopip

【非公式】ニコニコ動画・ニコニコ生放送をPinPで再生します

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nicopipは、ニコニコ動画およびニコニコ生放送（https://www.nicovideo.jp）の動画を非公式でピクチャーインピクチャー（PinP）表示できるChrome拡張機能です。動画のコメントを画面に合成しながら再生できるため、コメント付きの視聴をしながら他の作業も並行可能です。

動画プレイヤーのツールバーにPinPボタンを追加し、簡単に切り替えられます。ただし、コメント合成による処理が挟まるため、通常再生よりパフォーマンスの負荷が高めになる点に注意が必要です。ニコニコ動画ファンに便利な拡張としておすすめです。

Extension Video Entertainment Productivity

By:: ru_shalm
Users:: 10,000
Rating:: 4.63

(41)
Version:: 1.7.0 Last updated: 2025-05-18
Creation date:: 2020-04-16
Risk:: Low risk impact Moderate risk likelihood
Size:: 52.79KB
Email:: ru*****@hazimu.com
Full description:: See detailed description
Source:: Chrome Web Store
Data ingested on:: 2025-07-14

Ranking

# 7,746 ▲ 32

Other rankings

#1748 in Accessibility ▲ 5

User reviews

Users praise "nicopip" for enabling picture-in-picture with overlaid comments on NicoNico videos, including the new UI and Nico Live, enhancing the viewing experience. The developer's rapid and effective updates are highly appreciated. While the extension performs well across multiple browsers, users desire playback controls inside the PiP window and report occasional performance issues such as video freezing and browser crashes. Despite some bugs affecting PiP video playback and comment speed, the ongoing developer support maintains user satisfaction.

Pros

Allows picture-in-picture (PiP) functionality on NicoNico video content, including on the new UI and Nico Live streams.
Displaying comments overlaid on the PiP window, maintaining the typical NicoNico viewing experience.
Fast and responsive developer updates and support, including quick fixes and new UI adaptations.
Simple and clean icon design appreciated by users.
Works well across multiple browsers including Chrome, Vivaldi, and Chrome OS (though some issues present).

Cons

Lack of playback control buttons (pause/play) within the PiP window is frequently requested.
On some systems or browsers (e.g., Chrome OS, Brave), users experience performance issues like freezing, video not playing in PiP, or browser crashes.
Some functionality issues with video title and next video display disappearing in non-PiP normal pages.
Comments flow speed in the PiP window is perceived as slow by some users.
Issues with PiP functionality breaking or videos freezing after updates, though fixed quickly by the developer.

Recent reviews

コメントが表示されるようになって神

フー*****, 2025-05-22

pip機能については満足していますが、nsenのpipではない通常ページにおいて現在再生中の動画タイトルや再生待ちの動画などが表示されなくなってしまいます。

Re*****, 2024-10-01

欲しい機能だったので助かりました。ありがとうございます。

グロ*****, 2024-10-01

View all user reviews ›

Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

nicopip requires very minimum permissions.

Risk impact analysis details

High Injects scripts into web pages, which may alter or extract site contents, resulting in a substantial risk.

Risk likelihood

Risk likelihood measures the probability that a Chrome extension may turn malicious. This is determined by the publisher and the Chrome extension reputation on Chrome Web Store, the amount of time the Chrome extension has been around, and other signals about the Chrome extension. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Chrome extension.

nicopip is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this extension.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******

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