List of file signatures

This is a dynamic list and may never be able to satisfy particular standards for completeness. You can help by adding missing items with reliable sources.

A file signature is data used to identify or verify the content of a file. Such signatures are also known as magic numbers or magic bytes and are usually appended at the beginning of the file.

Many file formats are not intended to be read as text. If such a file is accidentally viewed as a text file, its contents will be unintelligible. However, some file signatures can be recognizable when interpreted as text. In the table below, 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. In some cases the space character is shown as ␠.

Hex signature	ISO 8859-1	Offset	Extension	Description
23 21	#!	0		Script or data to be passed to the program following the shebang (#!)[1]
02 00 5a 57 52 54 00 00 00 00 00 00 00 00 00 00	␂␀ZWRT␀␀␀␀␀␀␀␀␀␀	0	cwk	Claris Works word processing doc
00 00 02 00 06 04 06 00 08 00 00 00 00 00	␀␀␂␀␆␄␆␀␈␀␀␀␀␀	0	wk1	Lotus 1-2-3 spreadsheet (v1) file
00 00 1A 00 00 10 04 00 00 00 00 00	␀␀␚␀␀␊␄␀␀␀␀␀	0	wk3	Lotus 1-2-3 spreadsheet (v3) file
00 00 1A 00 02 10 04 00 00 00 00 00	␀␀␚␀␂␊␄␀␀␀␀␀	0	wk4 wk5	Lotus 1-2-3 spreadsheet (v4, v5) file
00 00 1A 00 05 10 04	␀␀␚␀␅␊␄	0	123	Lotus 1-2-3 spreadsheet (v9) file
00 00 03 F3	␀␀␃ó	0		Amiga Hunk executable file
00 00 49 49 58 50 52 (little-endian) 00 00 4D 4D 58 50 52 (big-endian)	␀␀IIXPR ␀␀MMXPR	0	qxd	Quark Express document
50 57 53 33	PWS3	0	psafe3	Password Gorilla Password Database
D4 C3 B2 A1 (little-endian)	Ôò¡	0	pcap	Libpcap File Format[2]
A1 B2 C3 D4 (big-endian)	¡²ÃÔ
4D 3C B2 A1 (little-endian)	M<²¡	0	pcap	Libpcap File Format (nanosecond-resolution)[2]
A1 B2 3C 4D (big-endian)	¡²<M
0A 0D 0D 0A	␊␍␍␊	0	pcapng	PCAP Next Generation Dump File Format[3]
ED AB EE DB	í«îÛ	0	rpm	RedHat Package Manager (RPM) package[4]
53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00	SQLite format 3␀	0	sqlitedb sqlite db	SQLite Database[5]
53 50 30 31	SP01	0	bin	Amazon Kindle Update Package[6]
49 57 41 44	IWAD	0	wad	internal WAD (main resource file of Doom)[7]
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
BE BA FE CA	¾ºþÊ	0	DBA	Palm Desktop Calendar Archive
00 01 42 44	␀␁BD	0	DBA	Palm Desktop To Do Archive
00 01 44 54	␀␁DT	0	TDA	Palm Desktop Calendar Archive
54 44 46 24	TDF$	0	TDF$	Telegram Desktop File
54 44 45 46	TDEF	0	TDEF	Telegram Desktop Encrypted File
00 01 00 00	␀␁␀␀	0		Palm Desktop Data File (Access format)
00 00 01 00	␀␀␁␀	0	ico	Computer icon encoded in ICO file format[8]
69 63 6e 73	icns	0	icns	Apple Icon Image format
66 74 79 70 33 67	ftyp3g	4	3gp 3g2	3rd Generation Partnership Project 3GPP and 3GPP2 multimedia files
66 74 79 70 68 65 69 6366 74 79 70 6d	ftypheic	4	heic	High Efficiency Image Container (HEIC)
1F 9D	␟□	0	z tar.z	compressed file (often tar zip) using Lempel-Ziv-Welch algorithm
1F A0	␟⍽	0	z tar.z	Compressed file (often tar zip) using LZH algorithm
2D 6C 68 30 2D	-lh0-	2	lzh	Lempel Ziv Huffman archive file Method 0 (No compression)
2D 6C 68 35 2D	-lh5-	2	lzh	Lempel Ziv Huffman archive file Method 5 (8 KiB sliding window)
42 41 43 4B 4D 49 4B 45 44 49 53 4B	BACKMIKEDISK	0	bac	AmiBack Amiga Backup data file
49 4E 44 58	INDX	0	idx	AmiBack Amiga Backup index file
62 70 6C 69 73 74	bplist	0	plist	Binary Property List file
42 5A 68	BZh	0	bz2	Compressed file using Bzip2 algorithm
47 49 46 38 37 61 47 49 46 38 39 61	GIF87a GIF89a	0	gif	Image file encoded in the Graphics Interchange Format (GIF)[9]
49 49 2A 00 (little-endian)	II*␀	0	tif tiff	Tagged Image File Format (TIFF)[10]
4D 4D 00 2A (big-endian)	MM␀*
49 49 2B 00 (little-endian)	II+␀	0	tif tiff	BigTIFF[11]
4D 4D 00 2B (big-endian)	MM␀+	0
49 49 2A 00 10 00 00 00 43 52	II*␀␐␀␀␀CR	0	cr2	Canon RAW Format Version 2[12] Canon's RAW format is based on TIFF.[13]
66 74 79 70 63 72 78 43 52	ftypcrx	0	cr3
80 2A 5F D7	€*_×	0	cin	Kodak Cineon image
52 4E 43 01 52 4E 43 02	RNC␁ RNC␂	0		Compressed file using Rob Northen Compression (version 1 and 2) algorithm[14]
4E 55 52 55 49 4D 47 4E 55 52 55 50 41 4C	NURUIMG NURUPAL	0	nui nup	nuru ASCII/ANSI image and palette files[15]
53 44 50 58 (big-endian format)	SDPX	0	dpx	SMPTE DPX image
58 50 44 53 (little-endian format)	XPDS
76 2F 31 01	v/1␁	0	exr	OpenEXR image
42 50 47 FB	BPGû	0	bpg	Better Portable Graphics format[16]
FF D8 FF DB	ÿØÿÛ	0	jpg jpeg	JPEG raw or in the JFIF or Exif file format[17]
FF D8 FF E0 00 10 4A 46 49 46 00 01	ÿØÿà␀␐JFIF␀␁
FF D8 FF EE	ÿØÿî
FF D8 FF E1 ?? ?? 45 78 69 66 00 00	ÿØÿá??Exif␀␀
FF D8 FF E0	ÿØÿà	0	jpg	JPEG raw or in the JFIF or Exif file format[17]
00 00 00 0C 6A 50 20 20 0D 0A 87 0A	␀␀␀␌jP␠␠␍␊‡␊	0	jp2 j2k jpf jpm jpg2 j2c jpc jpx mj2	JPEG 2000 format[18]
FF 4F FF 51	ÿOÿQ
71 6f 69 66	qoif	0	qoi	QOI - The “Quite OK Image Format”[19]
46 4F 52 4D ?? ?? ?? ?? 49 4C 42 4D	FORM????ILBM	0 any	ilbm lbm ibm iff	IFF Interleaved Bitmap Image
46 4F 52 4D ?? ?? ?? ?? 38 53 56 58	FORM????8SVX	0 any	8svx 8sv svx snd iff	IFF 8-Bit Sampled Voice
46 4F 52 4D ?? ?? ?? ?? 41 43 42 4D	FORM????ACBM	0 any	acbm iff	Amiga Contiguous Bitmap
46 4F 52 4D ?? ?? ?? ?? 41 4E 42 4D	FORM????ANBM	0 any	anbm iff	IFF Animated Bitmap
46 4F 52 4D ?? ?? ?? ?? 41 4E 49 4D	FORM????ANIM	0 any	anim iff	IFF CEL Animation
46 4F 52 4D ?? ?? ?? ?? 46 41 58 58	FORM????FAXX	0 any	faxx fax iff	IFF Facsimile Image
46 4F 52 4D ?? ?? ?? ?? 46 54 58 54	FORM????FTXT	0 any	ftxt iff	IFF Formatted Text
46 4F 52 4D ?? ?? ?? ?? 53 4D 55 53	FORM????SMUS	0 any	smus smu mus iff	IFF Simple Musical Score
46 4F 52 4D ?? ?? ?? ?? 43 4D 55 53	FORM????CMUS	0 any	cmus mus iff	IFF Musical Score
46 4F 52 4D ?? ?? ?? ?? 59 55 56 4E	FORM????YUVN	0 any	yuvn yuv iff	IFF YUV Image
46 4F 52 4D ?? ?? ?? ?? 46 41 4E 54	FORM????FANT	0 any	iff	Amiga Fantavision Movie
46 4F 52 4D ?? ?? ?? ?? 41 49 46 46	FORM????AIFF	0 any	aiff aif aifc snd iff	Audio Interchange File Format
4C 5A 49 50	LZIP	0	lz	lzip compressed file[20]
30 37 30 37 30 37	070707	0	cpio	cpio archive file[21]
4D 5A	MZ	0	exe dll mui sys scr cpl ocx ax iec ime rs tsp fon efi	DOS MZ executable and its descendants (including NE and PE)
53 4D 53 4E 46 32 30 30	SMSNF200	0	ssp	SmartSniff Packets File [22]
5A 4D	ZM	0	exe	DOS ZM executable and its descendants (rare)
50 4B 03 04 50 4B 05 06 (empty archive) 50 4B 07 08 (spanned archive)	PK␃␄ PK␅␆ PK␇␈	0	zip aar apk docx epub ipa jar kmz maff msix odp ods odt pk3 pk4 pptx usdz vsdx xlsx xpi whl	zip file format and formats based on it, such as EPUB, JAR, ODF, OOXML
52 61 72 21 1A 07 00	Rar!␚␇␀	0	rar	Roshal ARchive compressed archive v1.50 onwards[23]
52 61 72 21 1A 07 01 00	Rar!␚␇␁␀	0	rar	Roshal ARchive compressed archive v5.00 onwards[24]
7F 45 4C 46	␡ELF	0	none, .axf, .bin, .elf, .o, .out, .prx, .puff, .ko, .mod, .so	Executable and Linkable Format[25]
89 50 4E 47 0D 0A 1A 0A	‰PNG␍␊␚␊	0	png	Image encoded in the Portable Network Graphics format[26]
0E 03 13 01	␅␃␓␁	0	hdf4 h4	Data stored in version 4 of the Hierarchical Data Format.
89 48 44 46 0D 0A 1A 0A	‰HDF␍␊␚␊	0, 512, 1024, 2048, ...	hdf5 h5	Data stored in version 5 of the Hierarchical Data Format.
C9	É	0	com	CP/M 3 and higher with overlays[27]
CA FE BA BE	Êþº¾	0	class	Java class file, Mach-O Fat Binary
EF BB BF		0	txt others	UTF-8 byte order mark, commonly seen in text files.[28][29][30]
FF FE	ÿþ	0	txt others	UTF-16LE byte order mark, commonly seen in text files.[28][29][30]
FE FF	þÿ	0	txt others	UTF-16BE byte order mark, commonly seen in text files.[28][29][30]
FF FE 00 00	ÿþ␀␀	0	txt others	UTF-32LE byte order mark for text[28][30]
00 00 FE FF	␀␀þÿ	0	txt others	UTF-32BE byte order mark for text[28][30]
2B 2F 76 38 2B 2F 76 39 2B 2F 76 2B 2B 2F 76 2F	+/v8 +/v9 +/v+ +/v/	0		UTF-7 byte order mark for text[31][30]
0E FE FF	␎þÿ	0	txt others	SCSU byte order mark for text[31][30]
DD 73 66 73	Ýsfs	0		UTF-EBCDIC byte order mark for text[31][30]
FE ED FA CE	þíúÎ	0 0x1000		Mach-O binary (32-bit)
FE ED FA CF	þíúÏ	0 0x1000		Mach-O binary (64-bit)
FE ED FE ED	þíþí	0		JKS Javakey Store[32]
CE FA ED FE	Îúíþ	0		Mach-O binary (reverse byte ordering scheme, 32-bit)[33]
CF FA ED FE	Ïúíþ	0		Mach-O binary (reverse byte ordering scheme, 64-bit)[33]
25 21 50 53	%!PS	0	ps	PostScript document
25 21 50 53 2D 41 64 6F 62 65 2D 33 2E 30 20 45 50 53 46 2D 33 2E 30	%!PS-Adobe-3.0 ESPF-3.0	0	eps epsf	Encapsulated PostScript file version 3.0[34]
25 21 50 53 2D 41 64 6F 62 65 2D 33 2E 31 20 45 50 53 46 2D 33 2E 30	%!PS-Adobe-3.1 ESPF-3.0	0	eps epsf	Encapsulated PostScript file version 3.1[35]
49 54 53 46 03 00 00 00 60 00 00 00	ITSF␃␀␀␀`␀␀␀	0	chm	MS Windows HtmlHelp Data
3F 5F	?_	0	hlp	Windows 3.x/95/98 Help file
25 50 44 46 2D	%PDF-	0	pdf	PDF document[36]
30 26 B2 75 8E 66 CF 11 A6 D9 00 AA 00 62 CE 6C	0&²uŽfÏ␑¦Ù␀ª␀bÎl	0	asf wma wmv	Advanced Systems Format[37]
24 53 44 49 30 30 30 31	$SDI0001	0		System Deployment Image, a disk image format used by Microsoft
4F 67 67 53	OggS	0	ogg oga ogv	Ogg, an open source media container format
38 42 50 53	8BPS	0	psd	Photoshop Document file, Adobe Photoshop's native file format
52 49 46 46 ?? ?? ?? ?? 57 41 56 45	RIFF????WAVE	0	wav	Waveform Audio File Format[38]
52 49 46 46 ?? ?? ?? ?? 41 56 49 20	RIFF????AVI␠	0	avi	Audio Video Interleave video format[39]
FF FB FF F3 FF F2	ÿû ÿó ÿò	0	mp3	MPEG-1 Layer 3 file without an ID3 tag or with an ID3v1 tag (which is appended at the end of the file)
49 44 33	ID3	0	mp3	MP3 file with an ID3v2 container
42 4D	BM	0	bmp dib	BMP file, a bitmap format used mostly in the Windows world
43 44 30 30 31	CD001	0x8001 0x8801 0x9001	iso	ISO9660 CD/DVD image file[40]
43 44 30 30 31	CD001	0x5EAC9	cdi	CD-i CD image file
6D 61 69 6E 2E 62 73	main.bs	0	mgw	Nintendo Game & Watch image file
4E 45 53	NES	0	nes	Nintendo Entertainment System image file
A0 32 41 A0 A0 A0	2A	0x165A4	d64	Commodore 64 1541 disk image (D64 format)
47 53 52 2D 31 35 34 31	GCR-1541	0	g64	Commodore 64 1541 disk image (G64 format)
A0 33 44 A0 A0	3D	0x61819	d81	Commodore 64 1581 disk image (D81 format)
43 36 34 20 74 61 70 65 20 69 6D 61 67 65 20 66 69 6C 65	C64 tape image file	0	t64	Commodore 64 tape image
43 36 34 20 43 41 52 54 52 49 44 47 45 20 20 20	C64 CARTRIDGE␠␠␠	0	crt	Commodore 64 cartridge image
53 49 4D 50 4C 45 20 20 3D 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 54	SIMPLE␠␠ =␠␠␠␠␠␠␠ ␠␠␠␠␠␠␠␠ ␠␠␠␠␠T	0	fits	Flexible Image Transport System (FITS)[41]
66 4C 61 43	fLaC	0	flac	Free Lossless Audio Codec[42]
4D 54 68 64	MThd	0	mid midi	MIDI sound file[43]
D0 CF 11 E0 A1 B1 1A E1	ÐÏ␑ࡱ␚á	0	doc xls ppt msi msg	Compound File Binary Format, a container format defined by Microsoft COM. It can contain the equivalent of files and directories. It is used by Windows Installer and for documents in older versions of Microsoft Office.[44] It can be used by other programs as well that rely on the COM and OLE API's.
64 65 78 0A 30 33 35 00	dex␊035␀	0	dex	Dalvik Executable
4B 44 4D	KDM	0	vmdk	VMDK files[45][46]
23 20 44 69 73 6B 20 44 65 73 63 72 69 70 74 6F	# Disk Descripto	0	vmdk	VMware 4 Virtual Disk description file (split disk)
43 72 32 34	Cr24	0	crx	Google Chrome extension[47] or packaged app[48]
41 47 44 33	AGD3	0	fh8	FreeHand 8 document[49][50]
05 07 00 00 42 4F 42 4F 05 07 00 00 00 00 00 00 00 00 00 00 00 01	␅␇␀␀BOBO ␅␇␀␀␀␀␀␀ ␀␀␀␀␀␁	0	cwk	AppleWorks 5 document
06 07 E1 00 42 4F 42 4F 06 07 E1 00 00 00 00 00 00 00 00 00 00 01	␆␇á␀BOBO ␆␇á␀␀␀␀␀ ␀␀␀␀␀␁	0	cwk	AppleWorks 6 document
45 52 02 00 00 00	ER␂␀␀␀	0	toast	Roxio Toast disc image file
8B 45 52 02 00 00 00	‹ER␂␀␀␀
6B 6F 6C 79	koly	end–512	dmg	Apple Disk Image file
78 61 72 21	xar!	0	xar	eXtensible ARchive format[51]
50 4D 4F 43 43 4D 4F 43	PMOCCMOC	0	dat	Windows Files And Settings Transfer Repository[52] See also USMT 3.0 (Win XP)[53] and USMT 4.0 (Win 7)[54] User Guides
4E 45 53 1A	NES␚	0	nes	Nintendo Entertainment System ROM file[55]
75 73 74 61 72 00 30 30 75 73 74 61 72 20 20 00	ustar␀00 ustar␠␠␀	257	tar	tar archive[56]
4F 41 52 ??	OAR?	0	oar	OAR file archive format, where ?? is the format version.
74 6F 78 33	tox3	0	tox	Open source portable voxel file[57]
4D 4C 56 49	MLVI	0	MLV	Magic Lantern Video file[58]
44 43 4D 01 50 41 33 30 50 41 33 30	DCM␁PA30 PA30	0		Windows Update Binary Delta Compression file[59]
37 7A BC AF 27 1C	7z¼¯'␜	0	7z	7-Zip File Format
1F 8B	␟‹	0	gz tar.gz	GZIP compressed file[60]
FD 37 7A 58 5A 00	ý7zXZ␀	0	xz tar.xz	XZ compression utility using LZMA2 compression
04 22 4D 18	␄"M␘	0	lz4	LZ4 Frame Format[61] Remark: LZ4 block format does not offer any magic bytes.[62]
4D 53 43 46	MSCF	0	cab	Microsoft Cabinet file
53 5A 44 44 88 F0 27 33	SZDDˆð'3	0	??_	Microsoft compressed file in Quantum format, used prior to Windows XP. File can be decompressed using Extract.exe or Expand.exe distributed with earlier versions of Windows. After compression, the last character of the original filename extension is replaced with an underscore, e.g. ‘Setup.exe’ becomes ‘Setup.ex_’.
46 4C 49 46	FLIF	0	flif	Free Lossless Image Format
1A 45 DF A3	␚Eߣ	0	mkv mka mks mk3d webm	Matroska media container, including WebM
4D 49 4C 20	MIL␠	0	stg	"SEAN : Session Analysis" Training file. Also used in compatible software "Rpw : Rowperfect for Windows" and "RP3W : ROWPERFECT3 for Windows".
41 54 26 54 46 4F 52 4D  ?? ?? ?? ?? 44 4A 56	AT&TFORM????DJV	0	djvu djv	DjVu document The following byte is either 55 (U) for single-page or 4D (M) for multi-page documents.
30 82	0‚	0	der	DER encoded X.509 certificate
2D 2D 2D 2D 2D 42 45 47 49 4E 20 43 45 52 54 49 46 49 43 41 54 45 2D 2D 2D 2D 2D	-----BEGIN CERTIFICATE-----	0	crt pem	PEM encoded X.509 certificate
2D 2D 2D 2D 2D 42 45 47 49 4E 20 43 45 52 54 49 46 49 43 41 54 45 20 52 45 51 55 45 53 54 2D 2D 2D 2D 2D	-----BEGIN CERTIFICATE REQUEST-----	0	csr pem	PEM encoded X.509 Certificate Signing Request
2D 2D 2D 2D 2D 42 45 47 49 4E 20 50 52 49 56 41 54 45 20 4B 45 59 2D 2D 2D 2D 2D	-----BEGIN PRIVATE KEY-----	0	key pem	PEM encoded X.509 PKCS#8 private key
2D 2D 2D 2D 2D 42 45 47 49 4E 20 44 53 41 20 50 52 49 56 41 54 45 20 4B 45 59 2D 2D 2D 2D 2D	-----BEGIN DSA PRIVATE KEY-----	0	key pem	PEM encoded X.509 PKCS#1 DSA private key
2D 2D 2D 2D 2D 42 45 47 49 4E 20 52 45 41 20 50 52 49 56 41 54 45 20 4B 45 59 2D 2D 2D 2D 2D	-----BEGIN RSA PRIVATE KEY-----	0	key pem	PEM encoded X.509 PKCS#1 RSA private key
50 75 54 54 59 2D 55 73 65 72 2D 4B 65 79 2D 46 69 6C 65 2D 32 3A	PuTTY-User-Key-File-2:	0	ppk	PuTTY private key file version 2
50 75 54 54 59 2D 55 73 65 72 2D 4B 65 79 2D 46 69 6C 65 2D 33 3A	PuTTY-User-Key-File-3:	0	ppk	PuTTY private key file version 3
2D 2D 2D 2D 2D 42 45 47 49 4E 20 4F 50 45 4E 53 53 48 20 50 52 49 56 41 54 45 20 4B 45 59 2D 2D 2D 2D 2D	-----BEGIN OPENSSH PRIVATE KEY-----	0		OpenSSH private key file
2D 2D 2D 2D 2D 42 45 47 49 4E 20 53 53 48 32 20 4B 45 59 2D 2D 2D 2D 2D	-----BEGIN SSH2 PUBLIC KEY-----	0	pub	OpenSSH public key file
44 49 43 4D	DICM	128	dcm	DICOM Medical File Format
77 4F 46 46	wOFF	0	woff	WOFF File Format 1.0[63]
77 4F 46 32	wOF2	0	woff2	WOFF File Format 2.0[64]
3C 3F 78 6D 6C 20	<?xml␠	0 after BOM	xml (UTF-8 or other 8-bit encodings)	eXtensible Markup Language[29][65]
3C 00 3F 00 78 00 6D 00 6C 00 20	<␀?␀x␀m␀l␀␠␀		xml (UTF-16LE)
00 3C 00 3F 00 78 00 6D 00 6C 00 20	␀<␀?␀x␀m␀l␀␠		xml (UTF-16BE)
3C 00 00 00 3F 00 00 00 78 00 00 00 6D 00 00 00 6C 00 00 00 20 00 00 00	<␀␀␀?␀␀␀ x␀␀␀m␀␀␀ l␀␀␀␠␀␀␀		xml (UTF-32LE)
00 00 00 3C 00 00 00 3F 00 00 00 78 00 00 00 6D 00 00 00 6C 00 00 00 20	␀␀␀<␀␀␀? ␀␀␀x␀␀␀m ␀␀␀l␀␀␀␠		xml (UTF-32BE)
4C 6F A7 94 93 40	Lo§”“@		xml (EBCDIC)
00 61 73 6D	␀asm	0	wasm	WebAssembly binary format[66]
CF 84 01	Ï„␁	0	lep	Lepton compressed JPEG image[67]
43 57 53	CWS	0	swf	Adobe Flash .swf
46 57 53	FWS
21 3C 61 72 63 68 3E 0A	!<arch>␊	0	deb	linux deb file
52 49 46 46 ?? ?? ?? ?? 57 45 42 50	RIFF????WEBP	0	webp	Google WebP image file, where ?? ?? ?? ?? is the file size. More information on WebP File Header
27 05 19 56	'␅␙V	0		U-Boot / uImage. Das U-Boot Universal Boot Loader.[68]
7B 5C 72 74 66 31	{\rtf1	0	rtf	Rich Text Format
54 41 50 45	TAPE	0		Microsoft Tape Format
47	G	0 0xBC 0x178 ... (every 188th byte)	ts tsv tsa mpg mpeg	MPEG Transport Stream (MPEG-2 Part 1)[69]
00 00 01 BA	␀␀␁º	0	m2p vob mpg mpeg	MPEG Program Stream (MPEG-1 Part 1 (essentially identical) and MPEG-2 Part 1)
00 00 01 B3	␀␀␁³	0	mpg mpeg	MPEG-1 video and MPEG-2 video (MPEG-1 Part 2 and MPEG-2 Part 2)
66 74 79 70 69 73 6F 6D	ftypisom	4	mp4	ISO Base Media file (MPEG-4)
66 74 79 70 4D 53 4E 56	ftypMSNV	4	mp4	MPEG-4 video file
78 01	x␁	0	zlib	No Compression (no preset dictionary)
78 5E	x^			Best speed (no preset dictionary)
78 9C	xœ			Default Compression (no preset dictionary)
78 DA	xÚ			Best Compression (no preset dictionary)
78 20	x␠			No Compression (with preset dictionary)
78 7D	x}			Best speed (with preset dictionary)
78 BB	x»			Default Compression (with preset dictionary)
78 F9	xù			Best Compression (with preset dictionary)
62 76 78 32	bvx2	0	lzfse	LZFSE - Lempel-Ziv style data compression algorithm using Finite State Entropy coding. OSS by Apple.[70]
4F 52 43	ORC	0	orc	Apache ORC (Optimized Row Columnar) file format
4F 62 6A 01	Obj␁	0	avro	Apache Avro binary file format
53 45 51 36	SEQ6	0	rc	RCFile columnar file format
3C 72 6F 62 6C 6F 78 21	<roblox!	0	rbxl	Roblox place file [71]
65 87 78 56	e‡xV	0	p25 obt	PhotoCap Object Templates
55 55 AA AA	UUªª	0	pcv	PhotoCap Vector
78 56 34	xV4	0	pbt pdt pea peb pet pgt pict pjt pkt pmt	PhotoCap Template
50 41 52 31	PAR1	0		Apache Parquet columnar file format
45 4D 58 32	EMX2	0	ez2	Emulator Emaxsynth samples
45 4D 55 33	EMU3	0	ez3 iso	Emulator III synth samples
1B 4C 75 61	␛Lua	0	luac	Lua bytecode[72]
62 6F 6F 6B 00 00 00 00 6D 61 72 6B 00 00 00 00	book␀␀␀␀mark␀␀␀␀	0	alias	macOS file Alias[73] (Symbolic link)
5B 5A 6F 6E 65 54 72 61 6E 73 66 65 72 5D	[ZoneTransfer]	0	Identifier	Microsoft Zone Identifier for URL Security Zones[74][75]
52 65 63 65 69 76 65 64 3A	Received:	0	eml	Email Message var5[citation needed]
20 02 01 62 A0 1E AB 07 02 00 00 00	␠␂␁b⍽␞«␇␂␀␀␀	0	tde	Tableau Datasource
37 48 03 02 00 00 00 00 58 35 30 39 4B 45 59	7H␃␂␀␀␀␀X509KEY	0	kdb	KDB file
85 ?? ?? 03	…??␃	0	pgp	PGP file [76]
28 B5 2F FD	(µ/ý	0	zst	Zstandard compress[77][78]
52 53 56 4B 44 41 54 41	RSVKDATA	0	rs	QuickZip rs compressed archive[79][80]
3A 29 0A	:)␊	0	sml	Smile file
4A 6F 79 21	Joy!	0		Preferred Executable Format
34 12 AA 55	4␒ªU	0	vpk	VPK file, used to store game data for some Source Engine games
2A 2A 41 43 45 2A 2A	**ACE**	7	ace	ACE (compressed file format)[citation needed]
60 EA	`ê	0	arj	ARJ
49 53 63 28	ISc(	0	cab	InstallShield CAB Archive File
4B 57 41 4A	KWAJ	0	??_	Windows 3.1x Compressed File
53 5A 44 44	SZDD	0	??_	Windows 9x Compressed File
5A 4F 4F	ZOO	0	zoo	Zoo (file format)
50 31 0A	P1␊	0	pbm	Portable bitmap ASCII
50 34 0A	P4␊	0	pbm	Portable bitmap binary
50 32 0A	P2␊	0	pgm	Portable Gray Map ASCII
50 35 0A	P5␊	0	pgm	Portable Gray Map binary
50 33 0A	P3␊	0	ppm	Portable Pixmap ASCII
50 36 0A	P6␊	0	ppm	Portable Pixmap binary
D7 CD C6 9A	×ÍÆš	0	wmf	Windows Metafile
67 69 6D 70 20 78 63 66	gimp xcf	0	xcf	XCF (file format)
2F 2A 20 58 50 4D 20 2A 2F	/* XPM */	0	xpm	X PixMap
41 46 46	AFF	0	aff	Advanced Forensics Format
45 56 46 32	EVF2	0	Ex01	EnCase EWF version 2 format
45 56 46	EVF	0	e01	EnCase EWF version 1 format
51 46 49	QFI	0	qcow	qcow file format
52 49 46 46 ?? ?? ?? ?? 41 43 4F 4E	RIFF????ACON	0	ani	Animated cursor
52 49 46 46 ?? ?? ?? ?? 43 44 44 41	RIFF????CDDA	0	cda	.cda file
52 49 46 46 ?? ?? ?? ?? 51 4C 43 4D	RIFF????QLCM	0	qcp	Qualcomm PureVoice file format
52 49 46 58 ?? ?? ?? ?? 46 47 44 4D (big-endian)	RIFX????FGDM	0	dcr	Adobe Shockwave[81][82][83]
58 46 49 52 ?? ?? ?? ?? 4D 44 47 46 (little-endian)	XFIR????MDGF
52 49 46 58 ?? ?? ?? ?? 4D 56 39 33 (big-endian)	RIFX????MV93	0	dir dxr drx	Macromedia Director file format[84][82][83]
58 46 49 52 ?? ?? ?? ?? 33 39 56 4D (little-endian)	XFIR????39VM
46 4C 56	FLV	0	flv	Flash Video file
3C 3C 3C 20 4F 72 61 63 6C 65 20 56 4D 20 56 69 72 74 75 61 6C 42 6F 78 20 44 69 73 6B 20 49 6D 61 67 65 20 3E 3E 3E	<<< Orac le VM Vi rtualBox Disk Im age >>>	0	vdi	VirtualBox Virtual Hard Disk file format
63 6F 6E 65 63 74 69 78	conectix	0	vhd	Windows Virtual PC Virtual Hard Disk file format[85]
76 68 64 78 66 69 6C 65	vhdxfile	0	vhdx	Windows Virtual PC Windows 8 Virtual Hard Disk file format
49 73 5A 21	IsZ!	0	isz	Compressed ISO image
44 41 41	DAA	0	daa	Direct Access Archive PowerISO
4C 66 4C 65	LfLe	0	evt	Windows Event Viewer file format
45 6C 66 46 69 6C 65	ElfFile	0	evtx	Windows Event Viewer XML file format
73 64 62 66	sdbf	8	sdb	Windows customized database
50 4D 43 43	PMCC	0	grp	Windows 3.x Program Manager Program Group file format
4B 43 4D 53	KCMS	0	icm	ICC profile
72 65 67 66	regf	0	dat hiv	Windows Registry file
21 42 44 4E	!BDN	0	pst	Microsoft Outlook Personal Storage Table file
44 52 41 43 4F	DRACO	0	drc	3D model compressed with Google Draco[86]
47 52 49 42	GRIB	0	grib grib2	Gridded data (commonly weather observations or forecasts) in the WMO GRIB or GRIB2 format[87]
42 4C 45 4E 44 45 52	BLENDER	0	blend	Blender File Format[88]
00 00 00 0C 4A 58 4C 20 0D 0A 87 0A	␀␀␀␌JXL␠␍␊‡␊	0	jxl	Image encoded in the JPEG XL format[89]
FF 0A	ÿ␊
00 01 00 00 00	␀␁␀␀␀	0	ttf tte dfont	TrueType font
4F 54 54 4F	OTTO	0	otf	OpenType font[90]
23 25 4D 6F 64 75 6C 65	#%Module	0		Modulefile for Environment Modules[91]
4D 53 57 49 4D 00 00 00 D0 00 00 00 00	MSWIM␀␀␀Ð␀␀␀␀	0	wim swm esd	Windows Imaging Format file
21 2D 31 53 4C 4F 42 1F	!-1SLOB␟	0	slob	Slob (sorted list of Object storages) is a read-only, compressed data store with dictionary-like interface[92]
AC ED	’	0		Serialized Java Data[93]
43 72 65 61 74 69 76 65 20 56 6F 69 63 65 20 46 69 6C 65 1A 1A 00	Creative Voice File	0	voc	Creative Voice file
2E 73 6E 64	.snd	0	au snd	Au audio file format
DB 0A CE 00		0		OpenGL Iris Perfomer .PFB (Performer Fast Binary)[94]
48 5a 4c 52 00 00 00 18	HZLR	0	hazelrules	Noodlesoft Hazel [95]
46 4C 68 64	FLhd	0	flp	FL Studio Project File
31 30 4C 46	10LF	0	flm	FL Studio Mobile Project File
52 4b 4d 43 32 31 30	RKMC210	0		Vormetric Encryption DPM Version 2.1 Header[96]
00 01 00 00 4D 53 49 53 41 4D 20 44 61 74 61 62 61 73 65	␀␁␀␀MSISAM Database	0	mny	Microsoft Money file
00 01 00 00 53 74 61 6E 64 61 72 64 20 41 43 45 20 44 42	␀␁␀␀Standard ACE DB	0	accdb	Microsoft Access 2007 Database
00 01 00 00 53 74 61 6E 64 61 72 64 20 4A 65 74 20 44 42	␀␁␀␀Standard Jet DB	0	mdb	Microsoft Access Database
01 FF 02 04 03 02	␁ÿ␂␄␃␂	0	drw	Micrografx vector graphic file
02 64 73 73	␂dss	0	dss	Digital Speech Standard (Olympus, Grundig, & Phillips) v2
03 64 73 73	␃dss	0	dss	Digital Speech Standard (Olympus, Grundig, & Phillips) v3
03 00 00 00 41 50 50 52	␃␀␀␀APPR	0	adx	Approach index file
06 06 ED F5 D8 1D 46 E5 BD 31 EF E7 FE 74 B7 1D	␆␆íõØ␝Få½1ïçþt·␝	0	indd	Adobe InDesign document
06 0E 2B 34 02 05 01 01 0D 01 02 01 01 02	␆␎+4␂␅␁␁␍␁␂␁␁␂	0-65535 (run-in)	mxf	Material Exchange Format file
07 53 4B 46	␇SKF	0	skf	SkinCrafter skin file
07 64 74 32 64 64 74 64	␇dt2ddtd	0	dtd	DesignTools 2D Design file
0A 16 6F 72 67 2E 62 69 74 63 6F 69 6E 2E 70 72	␊␖org.bitcoin.pr	0	wallet	MultiBit Bitcoin wallet file
0D 44 4F 43	␍DOC	0	doc	DeskMate Document file
0E 4E 65 72 6F 49 53 4F	␎NeroISO	0	nri	Nero CD Compilation
0E 57 4B 53	␎WKS	0	wks	DeskMate Worksheet
0F 53 49 42 45 4C 49 55 53	␏SIBELIUS	0	sib	Sibelius Music - Score file
23 20 4D 69 63 72 6F 73 6F 66 74 20 44 65 76 65 6C 6F 70 65 72 20 53 74 75 64 69 6F	# Microsoft Developer Studio	0	dsp	Microsoft Developer Studio project file
23 21 41 4D 52	#!AMR	0	amr	Adaptive Multi-Rate ACELP (Algebraic Code Excited Linear Prediction) Codec, commonly audio format with GSM cell phones.
23 21 53 49 4C 4B 0A	#!SILK␊	0	sil	Audio compression format developed by Skype
23 3F 52 41 44 49 41 4E 43 45 0A	#?RADIANCE␊	0	hdr	Radiance High Dynamic Range image file
23 40 7E 5E	#@~^	0	vbe	VBScript Encoded script
0D F0 1D C0	␍ð�À	0	cdb	MikroTik WinBox Connection Database (Address Book)
23 45 58 54 4D 33 55	#EXTM3U	0	m3u m3u8	Multimedia playlist
6D 64 66 00	mdf␀	0	m	M2 Archive, used by game developer M2
4B 50 4B 41	KPKA	0	pak	Capcom RE Engine game data archives
41 52 43	ARC	0	arc	Capcom MT Framework game data archives
41 72 43	ArC	0	arc cdx	FreeArc file
D0 4F 50 53	ÐOPS	0	pl	Interleaf PrinterLeaf / WorldView document format (now Broadvision QuickSilver)
6E 2B 31 00	n+1	344	nii	Single file NIfTI format, used extensively in biomedical imaging.
6E 69 31 00	ni1	344	hdr	Header file of a .hdr/.img pair in NIfTI format, used extensively in biomedical imaging.
52 41 46 36 34	RAF64	0		Report Builder file from Digital Metaphors
56 49 53 33	VIS3	0		Resource file Visionaire 3.x Engine
4D 53 48 7C 42 53 48 7C	MSH| BSH|	0	hl7	Health Level Seven (HL7) Standard for electronic data exchange
70 77 72 64 61 74 61	pwrdata	0	pwrdata	SAP Power Monitor (version 1.1.0 and higher) data file
1a 08	..	0	arc	ARC archive file
2d 2d 2d 2d 2d 42 45 47 49 4e 20 50 47 50 20 50 55 42 4c 49 43 20 4b 45 49 20 42 4c 4f 43 4b 2d 2d 2d 2d 2d	-----BEGIN PGP PUBLIC KEY BLOCK-----	0	asc	Armored PGP public key
3a 42 61 73 65 20	:Base	0	cnt	Windows 3.x - Windows 95 Help Contents
52 49 46 46 ?? ?? ?? ?? 56 44 52 4d	RIFF????VDRM	0	vdr	VirtualDub
52 59 46 46 ?? ?? ?? ?? 54 52 49 44	RIFF????TRID	0	trd	TrID
52 49 46 46 ?? ?? ?? ?? 73 68 77 34	RIFF????shw4	0	shw	Corel SHOW! 4.0
52 49 46 46 ?? ?? ?? ?? 73 68 77 35	RIFF????shw5	0	shw	Corel SHOW! 5.0
52 49 46 46 ?? ?? ?? ?? 73 68 72 35	RIFF????shr5	0	shr	Corel SHOW! 5.0 player
52 49 46 46 ?? ?? ?? ?? 73 68 62 35	RIFF????shb5	0	shb	Corel SHOW! 5.0 background
52 49 46 46 ?? ?? ?? ?? 52 4d 4d 50	RIFF????RMMP	0	mmm	MacroMind Multimedia Movie or Microsoft Multimedia Movie
41 53 54 4d 2d 45 35 37	ASTM-E57	0	e57	ASTM E57 3D file format
aa aa aa aa	ªªªª	0	sys	Crowdstrike Channel File
8C 0A 00	Œ..	0	ucas	Unreal Engine Compressed Asset Storage file
2D 3D 3D 2D 2D 3D 3D 2D 2D 3D 3D 2D 2D 3D 3D 2D	-==--==--==--==-	0	utoc	Unreal Engine Table of Contents file
43 36 34 46 69 6C 65 00	C64File	0	P00 (P01, P02,...)	Commodore 64 binary file (source: *.P00 format for Power64 emulator)
44 55 43 4B	DUCK	8		DuckDB database file (source: Source code)
71 6f 69 66	qoif	0		Quite OK Image format (Lossless image compression)[97]

See also

• List of filename extensions - alternative for file type identification and parsing
• List of file formats
• Magic number (programming)
• Substitute character (for the 1Ah (^Z) "end-of-file" marker used in many signatures)
• file (command)