During your experiments performance, plenty of images are produced that you can upload to Labguru.
When you add an image to a Labguru page, you have the option to annotate which includes the ability to crop it.
How to Crop an Image:
1. Click on the image and choose 'Annotation':
2.Click twice one the image, a new symbol on the image frame appears
3. Clicking and dragging in that symbol will result in a cropped image: