GifSplitter

GifSplitter is a lightweight and portable software program that gives you the possibility to extract all frames from GIF animations and save them as image files with the BMP extension. It includes just a couple of options that can be easily configured.

Portable tool with an intuitive interface

Since it's not packed in a setup kit, you can copy the downloaded files to any directory on the disk or to a USB flash drive, in order to launch the application on any computer effortlessly, without any previous setup. It doesn't need DLLs to run or add new entries to your system registry. However, it doesn't remember your settings on exit.
The GUI is user-friendly, represented by a normal window with a neatly organized structure. It doesn't put emphasis on visual elements, yet it's easy to navigate.

Extract frames from animated GIF

A GIF file can be specified with the help of the traditional file browser. The utility reveals its width and height, along with the number of frames, enabling you to indicate the saving directory for the new BMP images.
Before proceeding with the extraction job, you can ask it to automatically fill and create the output directory, as well as to apply a single background color for GIF with transparency. This color can be selected from the color spectrum.
The extraction job doesn't take long, after which you can open the output directory to inspect results. Apart from the BMP pictures, GifSplitter creates a .gsf file with the frame list, which can be used in Magic ASCII Studio (made by the same developer) to create ASCII art animations.

Evaluation and conclusion

It worked smoothly in our tests, without hanging, crashing or prompting errors. System resources usage was minimal. Although it doesn't have a particularly rich set of features, GifSplitter offers a simple solution for splitting GIF animations into BMP frames, and it can be used for free.