David Wardle, Editor / Informer Technologies, Inc. / November 02, 2012
This set contains applications that have two things in common: they are all free and they all can resize GIF image files. Most of them also support other image file formats as well, such as JPG, PNG, BMP, TGA, ICO, etc.
These programs can help you with what you're intending to do:
InfranView is a free image viewer with image editing tools and multimedia player capabilities for Windows OS. Recently its file support has been extended so that now it even is capable of playing audio, video and postscript files (somewhat similar to Mac OS file previewer).
Imazer is a very useful application that can quickly resize photographs in a very easy and rapid way. This application can reduce the size of pictures in the most widely-used graphic formats, including JPG, PNG, and GIF, and can also convert multiple files simultaneously in batch mode.
PIXresizer is a very vital software tool for those users who own a website or a website developer. PIXresizer, as the name itself suggests is a software tool for resizing the photo and the output comes out with drastically reduced file sizes. The conversion is quicker as it can allow resizing of multiple image files in batch mode.
Mihov Image Resizer is a very handy utility for batch conversion and resizing of BMP, JPG and GIF images. You can resize any photo or image in two clicks. Mihov Image Resizer neither looks like other image optimizers and converters, nor works like them.
Free Image Convert and Resize is a compact yet powerful program for batch mode image processing. The program easily converts separate images as well as file folders containing images into different graphic formats, renames, reorders them and changes their size in accordance with the set parameters. Supported image file formats: jpg, png, bmp, gif, tga, pdf (export only).
High Quality Photo Resizer is a useful tool for you if you are a professional photographer, web designer or anybody with hundreds of images and wanting to convert and resize them easily in a minute. Using its very user friendly and intuitive interface can convert images in 3 easy steps.
XnView - Free set of utilities and tools for editing, modifying, converting, viewing and handling photographs, pictures, digital images, graphic files in over 400 file formats (GIF, BMP, PNG, JPG, JPEG, TIFF, PCX, ICO, IMG, PDF, PIC, PSD, RAW, RGB, TGA, and many more).