Warning

as of 14/10/24, the cobalt main instance api has been taken down. this means that this extension will not work unless you host your own instance or use a third party instance.

to host your own instance, follow the official guide to get an instance up and running, then press the left arrow in the extension menu and type your instance's URL in the text box.

alternatively, you can use a community cobalt instance. you can find a list here.

cobalt extension

an extension for firefox and chromium browsers that uses the cobalt api.

installation

firefox

download from the firefox addons site here! (version 1.12.0)

chrome

only available from source since youtube downloaders are not allowed on chrome.

from source

• download the zip file for your browser from releases page to your right

firefox

• go to about:debugging -> This Firefox
• click "Load Temporary Add-on..."
• select the zip file you downloaded from releases

chrome

• go to chrome://extensions
• click developer mode in the top right
• click "Load Unpacked"
• unzip the folder and select it