You can customize the default fonts for the editor, preview and presentation via CSS, and you can theme the entire UI with different colors, but I haven't found

You can customize the default fonts for the editor, preview and presentation via CSS, and you can theme the entire UI with different colors, but I haven't found a way to change the font size for the core controls like the left notebook bar. Add a feature request @ https://github.com/HappenApps/Quiver/issues https://github.com/HappenApps/Quiver/issues For cells, you can Opt+Cmd+2 to convert to a code cell, then Opt+Cmd+/ to bring up the list of languages and then type ahead. That's about as close as it gets. You can also set the default language for new code cells in preferences.