Old Twitter on Firefox

in code.

If you’re using Google Chrome, this post isn’t for you. Try the GoodTwitter addon.

If you are using Firefox, while I’m sure that there’s also an addon for this, if you want to do this addon-free, create a plain-text file named user.js in your Firefox profile directory1. Set the file contents to the following:

user_pref("", "Opera/9.80 (Windows NT 6.1; WOW64) Presto/2.12.388 Version/12.18");

If you’re using Notepad, you should save as “All Files”.

The first line tells Firefox to tell Twitter it’s running an old version of Opera that isn’t supported by the new design. The second and third line tell Firefox to enable the bit of code responsible for lying about what browser it is to a specific website; this was disabled by default in Firefox 25.

Restart Firefox, and Twitter should be free of the hell that has been imposed upon us.

Thanks to @yourcompanionAI for first finding a somewhat less refined version of this.

  1. Click the menu button, click Help and select Troubleshooting Information. The Troubleshooting Information tab will open. Under the Application Basics section, click on Open Directory. Your profile folder will open.