With Sublime Text, is it possible to disable increase/decrease font size when using control and mouse? I found the key bindings for ctrl and +/-:

{ "keys": ["ctrl++"], "command": "increase_font_size" },
{ "keys": ["ctrl+="], "command": "increase_font_size" },
{ "keys": ["ctrl+-"], "command": "decrease_font_size" },

If I wanted to disable those, I could set the command to 'null', but how do you disable increase_font_size and decrease_font_size when using ctrl and mouse wheel? I'm on ubuntu if it is an OS setting.

4 Answers 4


Found help on the sublime forums, should have looked there first. But I will post a solution in case anyone wants to do the same.

I am using linux, but answer similar for windows. Copy 'Default (Linux).sublime-mousemap' from '~/.config/sublime-text-2/Packages/Default' into '...Packages/User':

cd ~/.config/sublime-text-2/
cp Packages/Default\ (Linux).sublime-mousemap Packages/User/

Remove everything except font settings and change the command to null:

  // Change font size with ctrl+scroll wheel
  { "button": "scroll_down", "modifiers": ["ctrl"], "command": "null" },
  { "button": "scroll_up", "modifiers": ["ctrl"], "command": "null" }

Copy it into your User folder so settings don't reset after an update.

Update for Sublime Text 3: This works with sublime text 3 as well, you'll just have to create the file manually subl ~/.config/sublime-text-3/Packages/User/Default (Linux).sublime-mousemap

  • 4
    This works with sublime text 3 as well, you'll just have to create the file manually subl ~/.config/sublime-text-3/Packages/User/Default (Linux).sublime-mousemap Jul 22, 2014 at 12:36
  • 7
    For windows because this question comes up as #1 in google. Create a file located at C:\Users\Michael J. Calkins\AppData\Roaming\Sublime Text 3\Packages\User\Default (Windows).sublime-mousemap and add the commands in the above answer then restart sublime. Mar 11, 2015 at 23:09


vim ~/.config/sublime-text-2/Packages/User/"Default (Linux).sublime-mousemap"

Set it to:

  // Change font size with ctrl+scroll wheel
  { "button": "scroll_down", "modifiers": ["ctrl"], "command": "null" },
  { "button": "scroll_up", "modifiers": ["ctrl"], "command": "null" }

Thanks to d_rail for the answer, just wanted to make it easier to do quickly.


On sublime 3, linux:

cat <<EOF>~/.config/sublime-text-3/Packages/User/"Default (Linux).sublime-mousemap"
  // Change font size with ctrl+scroll wheel
  { "button": "scroll_down", "modifiers": ["ctrl"], "command": "null" },
  { "button": "scroll_up", "modifiers": ["ctrl"], "command": "null" }

Thanks to d_rail for the answer, just making it easier to do it quickly on sublime 3 :-)


This was not working for me on Windows 10 (21H1) with Sublime Text 4 build 4107. I added the commands directly to the Default (Windows).sublime-mousemap, and also a custom-named.sublime-mousemap file. Neither change had an immediate effect and restarting Sublime Text did nothing to enable the changes.

I was beginning to suspect this may be a newly baked-in feature of Windows 10 and looked into disabling scroll wheel zoom in Windows 10 itself.

Google led me to a solution in a locked Microsoft Community post in which the author mentions that this "feature" applies to pretty much every Windows application. I discovered that now even Notepad.exe has Ctrl + Mouse Scroll Up/Down zoom functionality.

The solution makes use of AutoHotKey to disable the Ctrl + Mouse Scroll Up/Down text zoom shortcut. The post linked above includes detailed setup instructions. In that post, the author's script will disable the mouse wheel text zoom shortcut throughout Windows.

I added a context-sensitive directive that will disable this behaviour only while the Sublime Text window is active.

SendMode Input  
#IfWinActive, ahk_exe sublime_text.exe

SendMode Input is recommended by the AutoHotKey developers and the line is included by default in a new script from a Windows explorer context menu.

As this post mentions Windows, and after 6 years is still the #1 result on Google for this issue, I'm posting here in hopes of helping other Windows 10 users.

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