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.
Giphy Chrome Extension - Respond to emails, tweets & more w/ GIFs in a jiffy
Ralpha Image Resizer - High-speed image batch conversion tool
All the GIFs - Search all the GIFs right from your Mac
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Firefox Multi-account Containers - Sign in to two different accounts on the same site