To install a Firefox Add-On follow the below steps:
1. Go to the website containing the Firefox Add-On, the Mozilla Add-On website contains many add-ons available for free.
2. Click on the button which says Add To Firefox (Mozilla Add-On website) other websites may have different text on the button.
3. (Skip to Step 4 if you are downloading the add-on from the Mozilla Website) If you are downloading from a personal website website you will be asked to verify that website. Make sure a website is a trusted one before installing.
4. Once you click the button a window will appear with a countdown on the install button wait for the countdown and then click install.
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