4 Screen Viewer icon

4 Screen Viewer

by amachi · Tools
Manifest V3 Free
View in Chrome Web Store Data as of 20 Oct 2026

Opens a multi-screen viewer in a new tab.

Users
43
+11 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#116K
#97K among extensions
Version
1.3
updated 18 Feb 2026

Users

monthly, 13 months
02243Sep 2025Apr 2026Oct 2026
Latest, 20 Oct 2026: 43 usersMove the mouse over the chart for any month

Ratings count

monthly, 13 months
001Sep 2025Apr 2026Oct 2026
Latest, 20 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About 4 Screen Viewer

"Quad-Screen Video Viewer" A multitasking tool that lets you watch multiple videos simultaneously. Check out game streams, news, tutorials, and more all at the same time. This Chrome extension lets you watch up to four different videos simultaneously on one screen. It's ideal for those who want to keep up with multiple sources of information, such as game streams, breaking news, sports broadcasts, and online classes. Simply click the extension icon in your browser to open a new tab with four separate screens. Then, simply paste YouTube, Nico Nico Douga, Vimeo, or Dailymotion URLs into the respective input boxes and press the "Load" button. This simple operation dramatically improves your multitasking experience. This feature is also ideal for collaborative broadcasts where you want to view multiple perspectives simultaneously. Key Features - 4-Screen Simultaneous Playback: Watch up to four videos side by side. - Automatic URL Conversion: Automatically converts YouTube and Nico Nico Douga URLs into an embeddable format. - Layout Switching: Freely switch between a 4-screen grid layout and a main screen + 3 sub-screen layout. Lightweight and fast: We've eliminated unnecessary features to ensure a smooth experience. *Loading a video into a different frame while it's playing may cause the video to stop. This can be avoided by pausing the video and then loading it again. How to support the developer This extension is free, but we welcome your support to continue development and improvement. If you enjoy it, please consider making a donation. https://paypal.me/MasaAmachi

Growth

WindowUsersChangeRatingsRating
7 days+2+4.9%00.00
30 days+11+34.4%00.00
6 months+34+377.8%00.00
1 year+43–00.00

Version history

2 versions recorded
1.318 Feb 2026
1.221 Sep 2025

Details

Category
Tools
First seen
21 Sep 2025
Size
23 KB
Languages
en
Pricing
Free
Extension ID
mkflkhjhdhgmachcdmnepelobnoiebho

Permissions and risk

Moderate riskimpact 3, likelihood 2
Permissions
declarativeNetRequestdeclarativeNetRequestWithHostAccesstabsstorage
Site access
https://www.youtube.com/*https://www.youtube-nocookie.com/*https://www.nicovideo.jp/*https://mosasaur.nicovideo.jp/*https://*.nicovideo.jp/*https://vimeo.com/*https://www.tiktok.com/*https://www.twitch.tv/*https://player.twitch.tv/*https://clips.twitch.tv/*and 6 more

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