XnConvert - XnConvert is an easy image converter for graphic files, photos and images available on Windows...
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Photopus Pro - Photopus Pro is an easy to use batch image processing to simplify the process to convert, add watermarks (text and image), resize, transform, touch-up, rename, and apply effects to your digital images.
GIMP - GIMP is a multiplatform photo manipulation tool.
Online Image Converter - Online Image Converter converts your BMP, JPG, PNG, GIF or ICO files quickly and easily.
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.