Your Firefox extension will download automatically. If it doesn't, please click here.
If you see a window like this, click Allow.
If Firefox downloads the file instead, choose to open it with Firefox or open it manually with File > Open File… in the Firefox menu bar.
Once downloaded, Firefox will prompt you to confirm installation as shown below:
Click Install Now to install 1Password. Firefox will confirm by showing this window:
Restart Firefox to complete the installation.
After relaunching, 1Password's button will appear in Firefox's toolbar