List of file signatures

This is a list of file signatures, data used to identify or verify the content of a file. This is also known as a magic number and is further explained in the Magic number (programming) article.

Hex signature	ASCII signature	Offset	File extension	Description
00	.	0	PIC PIF SEA YTR	IBM Storyboard bitmap file Windows Program Information File Mac Stuffit Self-Extracting Archive IRIS OCR data file
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00	........ ........ ........	11	PDB	Palmpilot Database/Document File
00 00 00 nn 66 74 79 70 33 67 70	....ftyp 3gp	0	3GG, 3GP, 3G2	3rd Generation Partnership Project 3GPP (nn=0x14) and 3GPP2 (nn=0x20) multimedia files
00 00 00 18 66 74 79 70 33 67 70 35	....ftyp 3gp5	0	MP4	MPEG-4 video files
1F 9D	..	0	z, tar.z	compress file (often tar zip) using Lempel-Ziv-Welch
1F A0	..	0	z, tar.z	compress file (often tar zip) using LZH (Lempel-Ziv-Huffman)
49 49 2A 00 4D 4D 00 2A	II*. MM*	0	tif, tiff	tif file format
50 4B 03 04	PK..	0	zip	zip file format
CA FE BA BE	Êþº¾	0	class	Java bytecode file
FF FE	..	0		Byte-order mark for 16-bit Unicode text file
FF FE 00 00	....	0		Byte-order mark for 32-bit Unicode text file
89 50 4E 47 0D 0A 1A 0A	.PNG....	0	png	PNG image

See also

• List of file formats
• Magic number (programming)

External links

• Gary Kessler's list of file signatures
• Online File Signature Database for Forensic Practitioners, a private compilation free to Law Enforcement
• Man page for compress, uncompress, and zcat on SCO Open Server