Addons are small software that enhances or put some functionality that you don't have in browser ,You can get that by installing addons.
► How to Install Addons in FireFox ?
Click on Firefox link at the top left hand corner of your Firefox window and than click on Addons ,A new window pops up and from there at the right ,click on see all link ,After clicking ,it takes you to the official addons page of firefox where you can see various firefox addons.
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