Hello, I present to you Gyazo , a software licensed under the General Public License capable of taking screenshots and uploading them to the web automatically.
The program is very easy to use. You run it and all you have to do is select the area of ​​the screen you want to capture.
After doing so, your browser will quickly open with the image that will have been automatically posted on gyazo's servers.
That image on the server is private, that is, no one can see it except yourself and the people with whom you share it.
It also creates a folder with the history of the images that you have been uploading.
From its website it gives you the option to share directly on social networks or simply with the URL link to the image.
You can download the program on the official website, both the source code and a .deb package for Debian and Ubuntu:
https://gyazo.com/es
Without further ado, I recommend that you try it -it's free- and I hope it will be useful for you.
Regards!