1
Open the screenshot editor
Hover over the screenshot you want to zoom in on and click the pen icon in the toolbar at the top right of the image.
2
Switch to Crop mode
In the editor, click the Crop tool in the left toolbar. The right panel will now show a Zoom slider alongside the aspect ratio controls.
3
Adjust the zoom
Drag the Zoom slider in the right panel to zoom in or out (100%–300%). You can also click and drag inside the image to pan and re-centre the zoomed view on the area you want to highlight.
4
Save your changes
Once you’re happy with the result, click Crop image at the bottom of the right panel to apply the zoom.