your tool for screenshots
Lightscreen Portable is an easy to use screenshot app packaged as a portable app so you can take pictures of the current in-use desktop wherever you go. You can place it on your USB flash drive, iPod, portable hard drive or a CD and use it on any computer, without leaving any personal information behind.
Features
Custom path support (ability to save screenshots anywhere on your device)
Save your screenshots in different formats (PNG, JPEG, etc...)
OptiPNG has been added
Upload screenshots to Imgur
https://portableapps.com