Changing font size of tabs strip in Sublime Text 3

Question

I used this answer, with a little bit help of Sublime 3 Help, I managed to port solution and change font size (and other attributes) of sidebar in my Sublime Text 3.

But how can I change (to larger) font size used by ST3 tab strip? If it is possible at all. I find filename tabs drawn with 10 pt font size quite not so comfortable on FullHD resolution screen. At least for my eyes.

Answer 1

As outlined in the answer you linked to, find your <theme>.sublime-theme file. Open it up and search for tab_label. The section should look something like this:

{
    "class": "tab_label",
    "font.size": 12, 
    "font.face": "Ubuntu"
},

Modify it according to your preferences and save the file. You should see the changes immediately.

To change the tab dimensions you can use the following section:

{
    "class": "tabset_control",
    "tab_height": 42,
    "tab_width": 160,
    "tab_min_width": 48
},

Note: Larger font sizes (e.g. > 12pt on my system) will get cut off, even if the tab height is adjusted accordingly. This is a well-known bug.

Answer 2

set the following in your Preferences.sublime-settings

"dpi_scale": 2.0

Answer 3

As of December 2020, the above answer referencing the dpi_scale setting does NOT work (using Sublime Text 3.2.2). The name of this setting was changed to ui_scale.

Go to Preferences | Settings

Then add the following (vary 1.3 as appropriate).

   "ui_scale": 1.3

Once you change this, you'll need to restart Sublime.

Credit @Marco Sulla for the correct reply above (its just kind of hidden in a comment).

Also Helpful:

• Install the PackageDev plugin
• This makes it very easy to edit your current theme via PackageDev: Edit Current Theme

You can also set the Tab fonts to bold like this by adding the following rule to your current theme:

{
    "rules": [
        {
            "class": "tab_label",
            "font.bold": true,
            "font.size": 14
        }
    ]
}