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.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Message Bender - Backup and delete all Slack messages in bulk
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats
Slack Deletron - Delete files from your Slack Workspace!
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Slackin - Create your own public Slack chat community