In Windows

Option 1 -

Press Ctrl and + at the same time to zoom in

Press Ctrl and - at the same time to zoom out

Option 2 -

Press and hold the Ctrl key while moving the wheel of your mouse forward or backward to zoom

Option 3 -

If you have a touchpad, simply use two fingers to zoom in or out

On a Chromebook

Option 1 -

Press Ctrl and + at the same time to zoom in

Press Ctrl and - at the same time to zoom out

Option 2 -

If you have a touchpad, simply use two fingers to zoom in or out

On a Mac

Option 1 -

Press command and + at the same time to zoom in

Press command and - at the same time to zoom out

Option 2 -

If you have a touchpad, simply use two fingers to zoom in or out