Use the Guidelines tool to add snappable guidelines anywhere on your screen.

Guidelines tool active in the Toolbar

Snappable guidelines

To add a snappable guideline, hold the left mouse button & drag in the direction of the object to which you want to attach it. When you're near the edge of the object release the left mouse button and the guideline will automatically snap to the object's edge.

Simple guidelines

In case you want to add a guideline to the exact position of your mouse cursor, use the available options from the context menu or the appropriate shortcuts from the list below.


Activate the Guidelines toolOption+GAlt+G
Leave the Guidelines toolEsc
Add horizontal guidelineShift+H
Add vertical guidelineShift+V
Clear screenOption+CAlt+C