List of file signatures

This is a list of file signatures, data used to identify or verify the content of a file. Such signatures are also known as magic numbers or Magic Bytes.
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, sometimes the file signature can be recognizable when interpreted as text. 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 ..

Hex signature	ISO 8859-1	Offset	Filename extension	Description
23 21		0		Script or data to be passed to the program following the shebang.
a1 b2 c3 d4 d4 c3 b2 a1		0	pcap	Libpcap File Format
0a 0d 0d 0a	....	0	pcapng	PCAP Next Generation Dump File Format
ed ab ee db		0	rpm	RedHat Package Manager package
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
53 50 30 31	SP01	0	bin	Amazon Kindle Update Package
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		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
00 00 01 00	....	0	ico	Computer icon encoded in ICO file format
66 74 79 70 33 67	ftyp3g	4	3gp 3g2	3rd Generation Partnership Project 3GPP and 3GPP2 multimedia files
1F 9D	..	0	z tar.z	compressed file using Lempel-Ziv-Welch algorithm
1F A0		0	z tar.z	Compressed file using LZH algorithm
42 41 43 4B 4D 49 4B 45 44 49 53 4B	BACKMIKE DISK	0	bac	File or tape containing a backup done with AmiBack on an Amiga. It typically is paired with an index file with the table of contents.
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
49 49 2A 00 4D 4D 00 2A	II. MM.	0	tif tiff	Tagged Image File Format
49 49 2A 00 10 00 00 00 43 52	II*..... CR	0	cr2	Canon RAW Format Version 2 Canon's RAW format is based on the TIFF file format
80 2A 5F D7	.*_.	0	cin	Kodak Cineon image
52 4E 43 01 52 4E 43 02	RNC.	0		Compressed file using algorithm
53 44 50 58 58 50 44 53	SDPX XPDS	0	dpx	SMPTE DPX image
76 2F 31 01	v/1.	0	exr	OpenEXR image
42 50 47 FB	BPGû	0	bpg	Better Portable Graphics format
FF D8 FF DB FF D8 FF E0 00 10 4A 46 49 46 00 01 `FF D8 FF EE` FF D8 FF E1 ?? ?? 45 78 69 66 00 00	ÿØÿÛ ÿØÿà..JFIF.. `ÿØÿî` ÿØÿá..Exif..	0	jpg jpeg	JPEG raw or in the JFIF or Exif file format
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
49 4E 44 58	INDX	0	idx	Index file to a file or tape containing a backup done with AmiBack on an Amiga.
4C 5A 49 50	LZIP	0	lz	lzip compressed file
4D 5A	MZ	0	exe dll	DOS MZ executable file format and its descendants
50 4B 03 04 50 4B 05 06 50 4B 07 08	PK..	0	zip aar apk docx epub ipa jar kmz maff odp ods odt pk3 pk4 pptx usdz vsdx xlsx xpi	zip file format and formats based on it, such as EPUB, JAR, ODF, OOXML
52 61 72 21 1A 07 00	Rar!...	0	rar	RAR archive version 1.50 onwards
52 61 72 21 1A 07 01 00	Rar!....	0	rar	RAR archive version 5.0 onwards
5A 4D	ZM	0	exe	DOS ZM executable file format and its descendants
7F 45 4C 46	.ELF	0		Executable and Linkable Format
89 50 4E 47 0D 0A 1A 0A	.PNG....	0	png	Image encoded in the Portable Network Graphics format
C9	È	0	com	CP/M 3 and higher with overlays
CA FE BA BE	Êþº¾	0	class	Java class file, Mach-O Fat Binary
EF BB BF	ï»¿	0		UTF-8 encoded Unicode byte order mark, commonly seen in text files.
FE ED FA CE	........	0 0x1000		Mach-O binary
FE ED FA CF	........	0 0x1000		Mach-O binary
FE ED FE ED	þíþí	0		JKS
CE FA ED FE	........	0		Mach-O binary
CF FA ED FE	........	0		Mach-O binary
FF FE	..	0		Byte-order mark for text file encoded in little-endian 16-bit Unicode Transfer Format
FF FE 00 00	....	0		Byte-order mark for text file encoded in little-endian 32-bit Unicode Transfer Format
25 21 50 53	%!PS	0	ps	PostScript document
49 54 53 46 03 00 00 00 60 00 00 00	ITSF....`...	0	chm	MS Windows HtmlHelp Data
25 50 44 46 2d	%PDF-	0	pdf	PDF document
30 26 B2 75 8E 66 CF 11 A6 D9 00 AA 00 62 CE 6C	0&²u.fÏ .¦Ù.ª.bÎl	0	asf wma wmv	Advanced Systems Format
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
52 49 46 46 ?? ?? ?? ?? 41 56 49 20	RIFF.... AVI.	0	avi	Audio Video Interleave video format
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
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
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
66 4C 61 43	fLaC	0	flac	Free Lossless Audio Codec
4D 54 68 64	MThd	0	mid midi	MIDI sound file
D0 CF 11 E0 A1 B1 1A E1		0	doc xls ppt msg	Compound File Binary Format, a container format used for document by older versions of Microsoft Office. It is however an open format used by other programs as well.
64 65 78 0A 30 33 35 00	dex.035.	0	dex	Dalvik Executable
4B 44 4D	KDM	0	vmdk	VMDK files
43 72 32 34	Cr24	0	crx	Google Chrome extension or packaged app
41 47 44 33	AGD3	0	fh8	FreeHand 8 document
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	....BOBO ........ ....	0	cwk	AppleWorks 6 document
45 52 02 00 00 00 8B 45 52 02 00 00 00	ER.... ãER....	0	toast	Roxio Toast disc image file, also some.dmg-files begin with same bytes
78 01 73 0D 62 62 60	x.s.bb`	0	dmg	Apple Disk Image file
78 61 72 21	xar!	0	xar	eXtensible ARchive format
50 4D 4F 43 43 4D 4F 43	PMOCCMOC	0	dat	Windows Files And Settings Transfer Repository See also USMT 3.0 and USMT 4.0 User Guides
4E 45 53 1A	NES	0	nes	Nintendo Entertainment System ROM file
75 73 74 61 72 00 30 30 75 73 74 61 72 20 20 00	ustar.00 ustar .	0x101	tar	tar archive
4F 41 52 ??	OAR.	0	oar	OAR file archive format, where ?? is the format version.
74 6F 78 33	TOX	0	tox	Open source portable voxel file
4D 4C 56 49	MLVI	0	MLV	Magic Lantern Video file
44 43 4D 01 50 41 33 30	DCM PA30	0		Windows Update
37 7A BC AF 27 1C	7z¼¯'	0	7z	7-Zip File Format
1F 8B	..	0	gz tar.gz	GZIP compressed file
FD 37 7A 58 5A 00	²7zXZ..	0	xz tar.xz	XZ compression utility using LZMA2 compression
04 22 4D 18	."M.	0	lz4	LZ4 Frame Format Remark: LZ4 block format does not offer any magic bytes.
4D 53 43 46	MSCF	0	cab	Microsoft Cabinet file
53 5A 44 44 88 F0 27 33	SZDD....	0	Various.	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.
46 4C 49 46	FLIF	0	flif	Free Lossless Image Format
1A 45 DF A3	.Eß£	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` for single-page or `4D` for multi-page documents.
30 82	0.	0	der	DER encoded X.509 certificate
44 49 43 4D	DICM	0x80	dcm	DICOM Medical File Format
77 4F 46 46	wOFF	0	woff
77 4F 46 32	wOF2	0	woff2
3c 3f 78 6d 6c 20		0	XML	eXtensible Markup Language when using the ASCII character encoding
00 61 73 6d	.asm	0	wasm	WebAssembly binary format
cf 84 01		0	lep	Lepton compressed JPEG image
43 57 53 46 57 53	CWS FWS	0	swf	flash.swf
21 3C 61 72 63 68 3E	!.	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
27 05 19 56	'..V	0		U-Boot / uImage. Das U-Boot Universal Boot Loader.
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