Sublime Text 3 how to change the font size of the file sidebar?

Question

Though I have tried to modify "font.size" in classes like "Label_control" and "sidebar_control" in the Package "Theme-Default", the font size of the editor does not change at all. Is there anything different in sublime text3？

Answer 1

The answers are omitting the square brackets, in the case one is creating the file from scratch.

To recap, for the ST3 users who don't have the Default.sublime-theme file (which is actually the default configuration), the simplest procedure is:

1. Navigate to Sublime Text -> Preferences -> Browse Packages
2. Open the User directory
3. Create a file named Default.sublime-theme (if you're using the default theme, otherwise use the theme name, e.g. Material-Theme-Darker.sublime-theme) with the following content (modify font.size as required):

---

[     {         "class": "sidebar_label",         "color": [0, 0, 0],         "font.bold": false,         "font.size": 12     }, ] 

For reference, here there is the full file (as found in ST2).

Ubuntu 18.04

Location of theme setting on Ubuntu 18.04, installed via sudo apt install sublime-text:

~/.config/sublime-text-3/Packages/User/Default.sublime-theme 

MacOS

Location of theme setting on MacOS, installed via DMG:

~/Library/Application\ Support/Sublime\ Text\ 3/Packages/User/Default.sublime-theme 

Answer 2

On Ubuntu, for versions of Sublime older than 3.2, what worked for me was changing the dpi scale in Preferences > Settings — User by adding this line:

"dpi_scale": 1.10  

For Sublime 3.2, you can use the following line instead:

"ui_scale": 1.10 

Adjust the scale value as needed. After this change, you have to restart Sublime Text for it to take effect.