Larger YouTube videos in theater mode

Automatically switch to theater mode and use all available space in your browser window to display the video as large as possible.

Larger YouTube videos in theater mode is available to install from Firefox Browser Add-ons and for download from this page. It has 145 daily users. The latest version is 1.3.5, and it was last updated a year ago.

View source code

Install from Firefox Browser Add-ons

Total download count: 0 (Only count downloads from Firefox-Stats)

All available versions

You can find the current and older versions of Larger YouTube videos in theater mode here. You can download the archived versions or inspect their source codes.

As a free user, you can only download the latest version.

Upgrade to download older versions

Version	Download	Size	Timestamp
1.3.5	XPI · ZIP · Source code	18.44K	2023-11-05
1.3.4	Paid users only	18.06K	2023-07-23
1.3.3	Paid users only	12.52K	2018-10-06

Install XPI file

An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.

Simply drag-and-drop the XPI into Firefox to install the add-on.

Install ZIP file

Download the Larger YouTube videos in theater mode ZIP file
In Firefox browser, go to about:addons to open Add-ons Manager
Click on , then select Install Add-on From File
Select the Larger YouTube videos in theater mode ZIP file from step 1. Larger YouTube videos in theater mode is now installed on your browser.