How to install your own extension in Firefox browser

How to install your own extension in Firefox browser . Create your extension files or get a sample extension files from GITHUB. We are going to use Borderify extension. This extension add a red border around the mozilla website . Once extension files are ready open a new tab and type about : debugging. Click on the blue color This Firefox link button. This will take you to the Temporary extensions page. Click on Load temporary add on button. Browse and select any file from your extension folder. This will install the selected extension . To test the extension open the mozilla.org website in the new tab. You can see a red color border around the website . Download sample extensions from link https://github.com/mdn/webextensions-examples/