FLOSS screenshot/generic file uploader for Linux (ShareX replacement)

Question

On Windows, I use ShareX. I'm looking for a piece of free software for Linux that can do these things.

• Take screenshots of the current monitor, current window, all monitors or a custom rectangular area.
• Automatically upload files to a custom web service and store the URL to the file in the clipboard.
• There should be a possibility to assign keyboard shortcuts to perform all of the above at once.
• Ideally, it would support uploading files copied to the clipboard as well.

Using my current setup on Windows, I can press the Print Screen key and ShareX will take a screenshot of the current monitor, save it locally, and automatically upload it to a "custom file uploader". I configured it to upload it to a web application using a simple POST request and some authentication credentials. It then extracts the URL from the response using a regular expression (actually, the application returns JSON, but ShareX doesn't seem to support that - I wouldn't mind JSON support) and stores it in the clipboard.

Basically, I'm looking to replicate that functionality on Linux. Is there a free software tool for Linux that can do this?

Answer 1

Shutter matches this fine (also see these answers):

• Take screenshots of the current monitor, current window, all monitors or a custom rectangular area: Yes. Additionally of menus, including/excluding the mouse pointer, configuratble delay.
• Automatically upload files to a custom web service and store the URL to the file in the clipboard: Yes. Multiple services pre-configured (e.g. Imgur), additional places via FTP or plugins
• There should be a possibility to assign keyboard shortcuts to perform all of the above at once: Indirectly. See configuring hotkeys and the Man Page. Combined actions should be possible via scripting, but I've not tested that.
• Ideally, it would support uploading files copied to the clipboard as well: I've not figured whether that's possible.

Shutter is free and open-source. I'm using it for years and am pretty satisfied – especially for the edit functionality, which not only lets me crop images, but also add arrows, text boxes and more (very useful for tutorials and the like).