Is there a quicker way to change blender UI Resolution Scale?

Question

Are there any addons or keyboard shortcuts which exist which allow you to change blender UI resolution scale quickly?

I am frequently hooking up my laptop to my external screen and the scale is mismatched when switching between the two - thus the reason for wanting a quick switch.

Answer 1

You can save it as *.py file and install as an add-on. This add-on will check the screen resolution (if you are using Windows) and change scale after a file is loaded (basically on startup)

bl_info = {
    "name": "UI scale",
    "version": (1, 0),
    "blender": (2, 80, 0),
    "location": "",
    "description": "",
    "warning": "",
    "doc_url": "",
    "category": "Interface",
}


import bpy
import ctypes
from bpy.app.handlers import persistent

@persistent
def load_handler(dummy):
    
    user32 = ctypes.windll.user32
    screensize = user32.GetSystemMetrics(0), user32.GetSystemMetrics(1)
    prefs = bpy.context.preferences.view

    # fill in your resolution here:
    if screensize == (1920,1080):
        # and scale that you want:
        prefs.ui_scale = 1.2
    else:
        # and default scale:
        prefs.ui_scale = 1.0



def register():
    bpy.app.handlers.load_post.append(load_handler)
    # uncomment to go nuts and check on every change 
    # bpy.app.handlers.depsgraph_update_post.append(load_handler)

def unregister():
    bpy.app.handlers.load_post.remove(load_handler)
    # uncomment to go nuts and check on every change 
    # bpy.app.handlers.depsgraph_update_post.remove(load_handler)

if __name__ == "__main__":
    register()

Answer 2

Try holding Ctrl and scrolling up and down, or clicking in the middle mouse button and moving the mouse up and down (while still holding Ctrl).

Either option must be performed over a menu within the UI (such as the N key menu of the 3D Viewport or the Properties Panel)