Windows Virtual PC Virtual Hard Disk file format VPK file, used to store game data for some Source Engine gamesĪCE (compressed file format) Microsoft Zone Identifier for URL Security Zones Īpache ORC (Optimized Row Columnar) file format LZFSE - Lempel-Ziv style data compression algorithm using Finite State Entropy coding. MPEG-1 video and MPEG-2 video (MPEG-1 Part 2 and MPEG-2 Part 2)ĭefault Compression (no preset dictionary)ĭefault Compression (with preset dictionary)īest Compression (with preset dictionary) MPEG Program Stream (MPEG-1 Part 1 (essentially identical) and MPEG-2 Part 1) Google WebP image file, where ? ? ? ? is the file size. Script or data to be passed to the program following the shebang (#!) In some cases the space character is shown as ␠ for clarity. The column ISO 8859-1 shows how the file signature appears when interpreted as text in the common ISO 8859-1 encoding, with unprintable characters represented as the control code abbreviation or symbol, or codepage 1252 character where available, or a box otherwise. However, sometimes the file signature can be recognizable when interpreted as text. If such a file is accidentally viewed as a text file, its contents will be unintelligible. Many file formats are not intended to be read as text. Such signatures are also known as magic numbers or Magic Bytes. This is a list of file signatures, data used to identify or verify the content of a file.

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