This extension allows you to type Lean unicode characters on your browser
similarly to programming environments.

Might be particularly useful on Zulip and GitHub.


  1. Clone this repository
  2. Visit chrome://extensions/
  3. Switch to Developer mode
  4. Click on Load unpacked extension and select the cloned directory
  5. Optional (recommended): pin the extension in your browser


You can see the extension settings popup by clicking on its icon.

With the settings above, whenever you type in \a and then hit space, the
extension will replace \a by α.

This behavior is only triggered in pages whose URLs start with the strings
listed in the URL matches field.

The ON by default option allows you to configure the extension to be active
or inactive when you visit those pages.

Hitting ALT twice switches the extension state between active and inactive.
You should see the extension icon changing colors if you’re visiting a page
listed in the URLs field.


View Github