ResizePixel is a free online image editor where simplicity is essential feature. It is designed to crop, resize, flip, rotate and convert images to various formats. The service is mobile-friendly, fast and easy to use.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Bulk Resize Photos - Resize large photos in bulk
Ralpha Image Resizer - High-speed image batch conversion tool
GIF Resizer - Create animated GIFs and resize GIFs too big to tweet!
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
RedKetchup - Free and easy image & video editing tools in your browser!