YouTube Thumbnail Viewer

Right click a YouTube Thumbnail to view a full-size version.

YouTube Thumbnail Viewer is available to install from Firefox Browser Add-ons and for download from this page. It has 30 daily users. The latest version is 1.1, 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 YouTube Thumbnail Viewer 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	Download count	Timestamp
1.1	XPI · ZIP · Source code	18.19K	0	2023-11-02

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 YouTube Thumbnail Viewer 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 YouTube Thumbnail Viewer ZIP file from step 1. YouTube Thumbnail Viewer is now installed on your browser.