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.
ImageKit.io - Instant multi-platform image optimization
Ralpha Image Resizer - High-speed image batch conversion tool
Promo Instant Image Resizer - Automatically optimize images for web & social media (free!)
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Promo.com - Every promotion starts with Promo.com.