Figma Support Forum

What does "Constrain proportions" do?

I have been using Figma everyday for almost 2 years and have never been able to use “Constrain proportions” because it simply doesn’t work. Why is this in the UI? Am I missing something?

EDIT: Before anyone says “use the up/down keys”, this action breaks snap-to-pixel-grid and is far too time consuming when resizing to other components.

It applies when you are entering size values in the numeric input field to the left of this button. That’s why it’s placed there, not in constraints which affect how the object resizes on canvas.

How do I “constrain proportions” in the constraints panel?

You can’t.