How to draw in a PDF

To draw in a PDF, there are 5 tools on the left side panel:

How to draw lines in a PDF

Select the Pencil tool
Choose the color on the left panel
Set the line thickness
Hold the left mouse button or trackpad in the place where you want to start drawing

To draw straight lines – hold and keep Shift pressed

You can select any drawn element using the Select tool and change it: size, angle, color, and line thickness

This is basic functionality that applies to all added elements

Select the Arrow tool
Move the cursor to where the arrow tail should be, hold the left mouse button, and drag to the point you want to indicate
Set the desired arrow color
Use the Line thickness slider to change the arrow line thickness
You can turn an arrow into a triangle – click the arrow tail and drag it toward the center

Select the Line tool on the left panel
Set the line color on the right panel
Set the line thickness
Hold the left mouse button where you want the line to start and drag it to where it should end, then release

Select the Rectangle tool on the left panel
A panel with color and line thickness settings will appear on the right
Move the cursor to the area where the shape should be, hold the left mouse button, and drag to the desired size
To keep proportions, hold Shift and drag any corner of the rectangle. This way you can make a square
To make a skewed rectangle (parallelogram), hold Shift and drag the middle control point on the side line
If you drag from the top, the tilt angle will change vertically

Select the Circle tool on the left panel
On the right panel, you can set the color and line thickness
Move the cursor to the needed area and hold the left mouse button to drag the oval to the desired size
To change proportions of an already drawn shape, select it with the Select tool and hold Shift while dragging any corner control

1. Select the Clear All tool

2. Confirm deletion by clicking the Continue button