How to share screenshots without USB connection

Hi everyone!

Do you know a workaround in order to easily share the screenshots I can take with my Kobo?

At the moment I need to connect the kobo to my pc using the USB cable but that's not very convenient. I thought of something like "KoboCloud" but that would work in a reverse way: it would share the file FROM the Kobo TO the Cloud.

Does anything like that exist?
Do you know other solutions to get the result I'm looking for?

Thanks in advance :D