To uninstall Firefox extensions, a user should follow a few simple steps within the browser. First, they need to open Firefox and click on the three horizontal lines in the upper right corner to access the menu. From this menu, they should select "Add-ons and themes." This action will direct them to the Add-ons Manager page where all installed extensions are displayed.
Once on the Add-ons page, the user can locate the extension they wish to uninstall in the "Extensions" section. Each extension will have an option to either disable or remove it. To uninstall, the user should click on the three dots next to the extension's name and choose "Remove." After confirming the removal, the extension will be uninstalled from Firefox.
If the user encounters any issues, checking the support pages on the current web site may provide additional help. Following these steps should allow for a straightforward removal of unwanted extensions.