Sometimes you will need to copy over all your bookmarks, personal preferences, usernames and passwords on your Mozilla Firefox to another computer. Here is how you can do that.
Using a Firefox Account
If you use a Firefox account, copying over all your bookmarks, preferences and passwords for various websites that you may have stored in your Firefox is pretty easy. All you have to do is to sign in with your Firefox account on the new PC and it will sync all your data to the new Firefox.
By having a Firefox account, you could not only copy your bookmarks and preferences to a new PC, but also can carry this with all your mobile devices where you use Firefox.
To create a new Firefox account, follow the steps shown in the screenshot below.
Copying Bookmarks, Preferences and Passwords without Firefox Account
If you do not have a Firefox account, you can still copy your bookmarks, personal preferences and passwords stored in your Firefox to another PC by following the steps below:
Step 1: Go to the PC you have all your bookmarks and preferences stored in your Firefox >> Close the Firefox and ensure that it is not running.
Step 2: On your Windows PC >> Click on Start >> Type %AppData% and press Enter
OR you can also find this folder manually: On Windows 7 & 10: My Computer >> C >> Users >> <<your username>> >> AppData >> Roaming >> Mozilla >> Firefox >> Profiles. (C:\Users\<<username>>\AppData\Roaming\Mozilla\Firefox\Profiles)
Step 3: Copy the folder you see under the Profiles folder on a Thumbdrive and copy it to the new PC on the same location (C:\Users\<<username>>\AppData\Roaming\Mozilla\Firefox\Profiles)
Step 4: Copy the existing profile folder name on the new PC and change it to something else (e.g. old-h810b33a.default).
Step 5: Then rename the Profile folder you just copied to the one you already had on your new PC as shown below.
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