Lightscreen Portable
Features:
-Can execute at Windows startup (hidden or displaying the main window).
-System tray icon for easy access.
-Five configurable actions, each with it's own hotkey (screen, window, area, etc).
-Multiple image formats (PNG, JPEG, etc) and image quality selector.
-A notification when the screenshot is taken.
-Screenshot delay
-Snap screenshots of the current desktop (or sections)
-Custom path support (ability to save screenshots anywhere on your device)
-OptiPNG has been added
Download Lightscreen Portable