Limit capture to a rectangle or window title

[srvanderplas]

I would love to be able to automate capturing a specific rectangle periodically, for instance, to get every slide during a zoom presentation.

I could probably get this after the fact by using imagemagick to crop the images, but this is not optimal for a couple of reasons:

• I'd have to fiddle with the parameters each time (as opposed to drawing a rectangle to select the bit I want)
• If only the part I want to save is kept, then I can do a quick comparison to see if there are significant differences between the images and only keep images that are different. This would help keep the total disk space down and would also make it easier to use the screenshots in a note app like Obsidian.

Proposed solution:

• Provide an option to keep only part of the screen, like the "capture rectangular region" option in most static screenshot tools (spectacle shown here)
  

Alternatives:

• I could probably get this done using imagemagick, but that is a bit less intuitive, requires fiddling with parameters, and might assume that all of the screenshots in a single folder would need to be cropped instead of a simple subset corresponding to e.g. one meeting.

This tool is great and was one of the easier solutions I found to this problem. Thanks so much!