ReaConverter!

XnConvert is an easy image converter for graphic files, photos and images available on Windows, MacOSX and Linux.It supports more than 400 file formats (jpeg, tiff, png, gif, camera raw, jpeg2000, WebP, OpenEXR, ...).You can resize, add a watermark, change contrast, brightness or gamma, apply filters and many other things.

Caesium Image Compressor lets you compress your pictures up to 90% without visible quality loss. Providing a simple yet effective interface with a real-time preview and multiple image processing at the same time, everyone will be able to reach the best result. Advanced users will find extra features, like metadata storing options or folder structure support.

Phatch = Photo & Batch! Phatch is a simple to use cross-platform GUI Photo Batch Processor which handles all popular image formats and can duplicate (sub)folder hierarchies. Phatch can batch resize, rotate, rename, ... and more in minutes instead of hours or days if you do it manually. Phatch will also support a console version in the future to batch photos on web servers.

Converseen is an open source batch image resizer and conversion tool written in C++ with the powerful Qt4 libraries.

Imaging is a Collection of Image Related Tools (Image Viewer, Image Converter, Image Resizer, Image Optimizer, etc).

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. ImBatch can batch resize and convert images in minutes instead of hours or days if you do it manually. It handles all popular image formats: BMP, DIB, RLE, TIF, TIFF, FAX, G3N, G3F, XIF, GIF, JPG, JPEG, JPE, JIF, PCX, PNG, TGA, TARGA, VDA, ICB, VST, PIX, PXM, PPM, PGM, PBM, WBMP, JP2, J2K, JPC, J2C, DCX, DAT, PSD, WDP, HDP. And it is absolutely FREE. »

Ralpha Image Resizer is a lightweight and portable program that can perform image operations in batch mode, such as resizing and applying filters.

Pixillion is a photo and image conversion software to convert image files between gif, jpg, png, pdf and much more. Before converting your file Pixillion allows you to view the image within the application as well as display the current file parameters.

Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.

Stellar Image Converter for Mac is a one stop solution to convert JPEG, JPG, BMP, PNG, GIF, TIFF etc. To JPEG, JP2, BMP, PSD etc. This converter utility supports 34 important image formats & converts them to best known 14 formats. It converts an Image having size up-to 500KB to another format for free. For size larger than 500kb, user need to register the software.

Photo Batch will help you process all your images at once. No more repetitive work, simply drag the images or the folders you wish to process into Photo Batch, then apply the desired effects, crop, rotate, resize and rename them all and finally export them.

Online Image Converter converts your BMP, JPG, PNG, GIF or ICO files quickly and easily. It is completely free.

Free Kigo Image Converter, Convert, resize and edit all images or photos with just a few clicks, and it also supports add watermark to images and make thumbnails.

adionSoft Fast Image Resizer is a small tool to quickly resize a batch of pictures.

Photo Resizer HD is simple and easy to use application for resizing single and multiple images.With this app you can resize/shrink your photos before sending them by Email or uploading them to Facebook , Twitter or any other social services.