ImageMagick is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX.

XnConvert is an easy image converter for graphic files, photos and images available on Windows, MacOSX and Linux.

Converseen is a free cross-platform batch image processor for Windows and Linux that allows you to convert, resize, rotate and flip an infinite number of images with a mouse click.

Convert and Rename images in batch mode

Support JPEG, BMP, GIF, PNG, TIFF and JPEG2000

Resize, crop, change color depth, apply color effects, add text, watermark and border effects

Rename images with sequential number

Search and replace texts in the file names

Preview conve.

With Filestar you can "do anything with any file". Get rid of repetitive tasks, save time and boost your productivity with over 30.000 file conversions available. Transform or convert hundreds of files, all at the same time with a few simple clicks.

Switcheroo is designed to give you a simple, quick, and easy-to-use tool to convert and manipulate your images in whatever way you like. It is built on top of the most advanced image editing libraries, ImageMagick.

Image Tuner is a free batch image resizing, renaming, conversion and watermarking software with a super-intuitive and straightforward interface.

GraphicsMagick is the swiss army knife of image processing. Comprised of 282K physical lines (according to David A. Wheelers SLOCCount) of source code in the base package (or 952K including 3rd party libraries) it provides a robust and efficient collection of tools and libraries...

Phatch is an user friendly, cross-platform Photo Batch Processor and Exif Renamer with a nice graphical user interface. Phatch handles all popular image formats and can duplicate (sub)folder hierarchies.

Pixillion is a photo and image conversion software to convert image files between gif, jpg, bmp, tif, png, pdf and much more. Before converting your file Pixillion allows you to preview the image alongside the current image parameters.

Graphic Converter for Mac and Windows, can converts image formats BMP, JPG, GIF, ICO, PNG, TIF, TIFF, JPEG, WMF, EMF, PSP, PSD, PCM, SVG, RAW and more.

ImBatch is a batch image processor with a nice graphical user interface. It will allow you to edit multiple image files at the click of a button by using scripts. The script will be created by combining Tasks.