Download YouTube Unrounded Thumbnails

Name: YouTube Unrounded Thumbnails
Author: Ben

By: Ben

Download YouTube Unrounded Thumbnails (current and past versions) for Firefox

Latest Version: 1.5 Updated: a year ago

Ready to install?

YouTube Unrounded Thumbnails is available to install from Firefox Add-ons Store and for download from this page.

View source code

169

Daily users

4.9

9 ratings

Total downloads

Available versions

You can find the current and older versions of YouTube Unrounded Thumbnails here. You can download the archived versions or inspect their source codes.

As a free user, you can download up to 3 latest versions.

Upgrade to download older versions

Version	Download	Size	Download count	Timestamp
1.5	XPI · ZIP · Source code	12.00KB	1	2025-08-24
1.4	XPI · ZIP · Source code	12.41KB	0	2025-07-30
1.3	XPI · ZIP · Source code	12.34KB	0	2025-03-09
1.2	Paid users only	12.23KB	0	2023-08-23
1.1	Paid users only	7.90KB	0	2022-10-28

2025-08-24 · 1 downloads

XPI ZIP Source code

2025-07-30 · 0 downloads

XPI ZIP Source code

2025-03-09 · 0 downloads

XPI ZIP Source code

2023-08-23 · 0 downloads

Paid users only

2022-10-28 · 0 downloads

Paid users only

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 Unrounded Thumbnails ZIP file.
In Firefox browser, go to about:addons to open Add-ons Manager
Click on ⚙, Install Add-on From File
Select the YouTube Unrounded Thumbnails ZIP file from step 1. YouTube Unrounded Thumbnails is now installed on your browser.