The information stored together in the compressed file is decompressed (restored) to the original file or folder so that it can be read, edited or run more easily.

According to the query of Tears Snow Network, file decompression refers to decompressing (restoring) the information stored together in a compressed file into the original file or folder for reading, editing or running. File decompression technology can help users recover files in a reasonable time in a very limited hardware resource environment. It stores files in a compact way, which can significantly reduce the amount of space needed for file transmission and storage, and can significantly reduce the overhead. The process of file decompression includes converting a compressed file into an uncompressed file with the correct size, restoring the correct format before the file, checking the structure of the file stored in the decompression program, restoring the original reserved control and data fields, determining whether the file is not damaged, and preserving the file bytes, file size and data structure when the decompression program is completed.