Installation Guide for Firefox Dev/Nightly
Added 2023-05-24 12:51:24 +0000 UTCEnter the following url in the address bar of your browser:
about:config
enter the following:
xpinstall.signatures.required
Double-click on the row that appears to set it to false.
From this point the process to install and update the extension is the same (If you update, do not delete the previous version, so you will keep your configuration).
Go to extensions or enter this url in the address bar:
about:addons
Go to extensions menu and drag the extension you downloaded for Firefox (zip file) onto the extensions screen.
Wait a few seconds, and when the window appears click on add.

Now you must go to the character.ai website, and on the extensions button at the top right allow the extension to work on the website:

Your extension is now loaded and ready to enjoy!

Comments
Ah I see--I'm running Stable--that seems to be the problem. Thanks!!
CJSTV4
2023-05-24 17:26:48 +0000 UTCHello, Firefox version must be Developer or Nightly. Is it?
Fifth Vertex
2023-05-24 15:44:57 +0000 UTCI am on Firefox 11.3.02 and it refuses to load unverified extensions :( I even tried to turn off signature requirements for extensions in the settings to no avail.
CJSTV4
2023-05-24 15:43:52 +0000 UTC