This is an implementation of the WSQ algorithm as described in "IAFIS Use of the Wavelet Scalar Quantization (WSQ) Compression/ Decompression Algorithm," J. J. Werner, 8 December 1992. The implementation is designed for well-equipped IBM-type desktop computers using the Windows 3.1 operating system. It reads .BMP files and writes compressed files, and vice versa. Results are displayable on a high-resolution video monitor. The quality factor can be set under menu control. Computations are performed in integer arithmetic -- no floating-point coprocessor is needed.