How to host your images off your domain/website or create some sort of screenshot program?

[Extend]

I've seen quite a few people around now that post screenshots that are not on the default or regularly used screenshot programs and I was wondering if anyone knows how to do it? I literally can't find any tutorials on the internet about this.
One example I found ; http://kman.pw/i/f8Rk.jpg

 

[chucK_]

http://www.mc-market.org/resources/328/

 

[Extend]

http://www.mc-market.org/resources/328/

Welp didn't even think to check resources.

 

[chucK_]

Welp didn't even think to check resources.

There's several cool little things on there.

 

[Speed]

shareX or screencloud
ShareX is more advanced though, screencloud is easy af