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.
Zapier - Connect the apps you use everyday to automate your work and be more productive. 1000+ apps and easy integrations - get started in minutes.
Ralpha Image Resizer - High-speed image batch conversion tool
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
n8n.io - Free and open fair-code licensed node based Workflow Automation Tool. Easily automate tasks across different services.