This document summarizes a tool called Sunzip that uses the Huffman algorithm for data compression. It discusses how Huffman encoding works by assigning shorter bit codes to more common symbols to reduce file size. The tool analyzes files to determine symbol frequencies and builds a Huffman tree to assign variable-length codes. It allows compressing different data types like text, images, audio and video. Adaptive Huffman coding is also described, which dynamically updates the code tree as more data is processed. Benefits of Huffman compression include being fast, simple to implement and achieving close to optimal compression. Sample screenshots of the Sunzip tool are also provided showing file details before and after compression.