image viewer and editor
Download from PortableApps.com
JPEGView Portable can run from a cloud folder, external drive, or local folder without installing into Windows. It's even better with the PortableApps.com Platform for easy installs and automatic updates.
JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images. On-the-fly image processing is provided - allowing to adjust typical parameters as sharpness, color balance, contrast and local under-/overexposure. JPEGView provides an unobtrusive interface to image viewing with most controls only appearing on mouse-over of the window or the lower section of the window (for image processing controls). It has a simple black-background and an optional full-screen mode enabling you to really look your images without distraction.