Bulk Resize Photos - Resize large photos in bulk
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Bulk Image Resizer by RedKetchup - Resize, convert, or compress multiple images quickly. Compress PNG, JPEG, WEBP, or HEIC images in batch. Convert multiple images to the PNG, JPEG, WEBP, HEIC, GIF, ICO, TIFF, or BMP formats.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Squash 2 for Mac - The easiest way to compress and optimize images for the web
LightShot - The fastest way to take a customizable screenshot.