How to Resize a Shape Proportionally in Inkscape?

Resizing shapes proportionally in Inkscape is a fundamental skill that ensures your graphics maintain their original aspect ratio without stretching or distorting. Whether you prefer using a quick keyboard shortcut, modifying settings in the tool control bar, or entering precise geometric dimensions, Inkscape offers multiple straightforward methods to scale your artwork perfectly.

Method 1: The Quick Keyboard Shortcut

The fastest way to resize any shape proportionally is by using the Select and Transform objects tool (S) alongside a modifier key.

Click on the Select tool (the black arrow) from the left toolbox or press S.
Click on the shape you want to resize to display its transform handles (the arrows surrounding the object).
Hold down the Ctrl key on your keyboard.
Click and drag any of the corner handles outward to enlarge or inward to shrink the shape.

Method 2: Locking the Aspect Ratio Bar

If you prefer using your mouse without holding down keyboard keys, you can lock the aspect ratio directly within Inkscape’s interface.

Select your shape using the Select tool.
Look at the top horizontal tool control bar for the width (W) and height (H) fields.
Between the W and H fields, locate the small padlock icon.
Click the padlock icon so it appears locked.

Once this lock is enabled, dragging any scale handle or changing either the width or height values manually will automatically force the other dimension to adjust proportionally.

Method 3: Using the Transform Dialog for Precision

When you need to scale a shape by an exact percentage or specific pixel value while maintaining its proportions, the Transform menu is the best choice.

Select your shape and open the Transform panel by pressing Shift + Ctrl + M (or navigate to Object > Transform in the top menu).
Switch to the Scale tab inside the panel that appears on the right.
Check the box labeled Scale proportionally.
Enter your desired percentage or choose a specific unit (like px, mm, or in) and click Apply.