How to resize a symbol
In the drawing
Drag the symbol's handles with your mouse to resize it. Corner handles maintain the aspect ratio, while the other handles stretch the symbol in a specific direction.
You can also set the size precisely in the Properties panel by entering scale values for the X and Y axes.
You can set a default scale for newly inserted symbols in the program settings (F12 - Symbols - Initial scale of the symbols).
If you increase a symbol's size and its lines look too thin, you can set a multiplier for line and wire thickness.
For example, a ratio of 1.5 increases line thickness from 0.2 mm to 0.3 mm (1.5 x 0.2 = 0.3).
Set this in the program settings (F12 - Paths - Symbols and wires line thickness ratio).
In the symbol editor
In the symbol editor, resize a symbol using Object - Scale. A dialog box appears where you adjust the size with a slider.
This is useful when you've already created a symbol and later decide it should be a different size.
💡 Pro tip: Before you start drawing your own symbols, look at the dimensions of the ones supplied with the program. If you keep the same proportions, your symbols will look consistent with the others in the drawing.