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List of file signatures

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This is an old revision of this page, as edited by Martin Kealey (talk | contribs) at 11:26, 22 October 2023 (→top: Use \u2400-\u2422 for (remaining) unprintable ASCII controls). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

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.

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 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 ␠ for clarity.

Hex signature ISO 8859-1 Offset Extension Description
23 21 #! 0 Script or data to be passed to the program following the shebang (#!)[1]
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 69 666 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 68 6C 30 2D -lh0- 2 lzh Lempel Ziv Huffman archive file Method 0 (No compression)
2D 68 6C 35 2D -lh5- 2 lzh Lempel Ziv Huffman archive file Method 5 (8KiB 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 2A 00 10 00 00 00
43 52 		II*␀␐␀␀␀CR 0 cr2 Canon RAW Format Version 2[11]
Canon's RAW format is based on TIFF.[12]
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
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
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[13]
FF D8 FF DB ÿØÿÛ 0 jpg
jpeg 		JPEG raw or in the JFIF or Exif file format[14]
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[14]
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[15]
FF 4F FF 51 ÿOÿQ
71 6f 69 66 qoif 0 QOI - The “Quite OK Image Format”[16]
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[17]
30 37 30 37 30 37 070707 0 cpio cpio archive file[18]
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)
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 		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[19]
52 61 72 21 1A 07 01 00 Rar!␚␇␁␀ 0 rar Roshal ARchive compressed archive v5.00 onwards[20]
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[21]
C9 É 0 com CP/M 3 and higher with overlays[22]
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.[23][24][25]
FF FE ÿþ 0 txt
others 		UTF-16LE byte order mark, commonly seen in text files.[23][24][25]
FE FF þÿ 0 txt
others 		UTF-16BE byte order mark, commonly seen in text files.[23][24][25]
FF FE 00 00 ÿþ␀␀ 0 txt
others 		UTF-32LE byte order mark for text[23][25]
00 00 FE FF ␀␀þÿ 0 txt
others 		UTF-32BE byte order mark for text[23][25]
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[26][25]
0E FE FF ␎þÿ 0 txt
others 		SCSU byte order mark for text[26][25]
DD 73 66 73 Ýsfs 0 UTF-EBCDIC byte order mark for text[26][25]
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 JavakeyStore
CE FA ED FE Îúíþ 0 Mach-O binary (reverse byte ordering scheme, 32-bit)[27]
CF FA ED FE Ïúíþ 0 Mach-O binary (reverse byte ordering scheme, 64-bit)[27]
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[28]
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[28]
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[29]
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[30]
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[31]
52 49 46 46 ?? ?? ?? ??
41 56 49 20 		RIFF????AVI␠ 0 avi Audio Video Interleave video format[32]
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[33]
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)[34]
66 4C 61 43 fLaC 0 flac Free Lossless Audio Codec[35]
4D 54 68 64 MThd 0 mid
midi 		MIDI sound file[36]
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.[37] 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[38][39]
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[40] or packaged app[41]
41 47 44 33 AGD3 0 fh8 FreeHand 8 document[42][43]
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[44]
50 4D 4F 43 43 4D 4F 43 PMOCCMOC 0 dat Windows Files And Settings Transfer Repository[45] See also USMT 3.0 (Win XP)[46] and USMT 4.0 (Win 7)[47] User Guides
4E 45 53 1A NES␚ 0 nes Nintendo Entertainment System ROM file[48]
75 73 74 61 72 00 30 30
75 73 74 61 72 20 20 00 		ustar␀00
ustar␠␠␀ 		257 tar tar archive[49]
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[50]
4D 4C 56 49 MLVI 0 MLV Magic Lantern Video file[51]
44 43 4D 01 50 41 33 30
50 41 33 30 		DCM␁PA30
PA30 		0 Windows Update Binary Delta Compression file[52]
37 7A BC AF 27 1C 7z¼¯'␜ 0 7z 7-Zip File Format
1F 8B ␟‹ 0 gz
tar.gz 		GZIP compressed file[53]
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[54]
Remark: LZ4 block format does not offer any magic bytes.[55]
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
77 4F 46 32 wOF2 0 woff2 WOFF File Format 2.0
3C 3F 78 6D 6C 20 <?xml␠ 0
after BOM 		xml eXtensible Markup Language[24][56]
3C 00 3F 00 78 00 6D 00
6C 00 20 		<␀?␀x␀m␀l␀␠␀
00 3C 00 3F 00 78 00 6D
00 6C 00 20 		␀<␀?␀x␀m␀l␀␠
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␀␀␀␠␀␀␀
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␀␀␀␠
4C 6F A7 94 93 40 Lo§”“@
00 61 73 6D ␀asm 0 wasm WebAssembly binary format[57]
CF 84 01 Ï„␁ 0 lep Lepton compressed JPEG image[58]
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.[59]
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)[60]
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.[61]
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 [62]
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[63]
62 6F 6F 6B 00 00 00 00
6D 61 72 6B 00 00 00 00 		book␀␀␀␀mark␀␀␀␀ 0 alias macOS file Alias[64] (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[65]
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 [66]
28 B5 2F FD (µ/ý 0 zst Zstandard compress[67][68]
52 53 56 4B 44 41 54 41 RSVKDATA 0 rs QuickZip rs compressed archive[69][70]
3A 29 0A :)␊ 0 sml Smile file
4A 6F 79 21 Joy! 0 Preferred Executable Format
31 0A 30 30 1␊00 0 srt SubRip File
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[71][72][73]
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[74][72][73]
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 6E 65 63 74 69
78 		connectix 0 vhd Windows Virtual PC Virtual Hard Disk file format
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[75]
47 52 49 42 GRIB 0 grib
grib2 		Gridded data (commonly weather observations or forecasts) in the WMO GRIB or GRIB2 format[76]
42 4C 45 4E 44 45 52 BLENDER 0 blend Blender File Format[77]
00 00 00 0C 4A 58 4C 20 0D 0A 87 0A ␀␀␀␌JXL␠␍␊‡␊ 0 jxl Image encoded in the JPEG XL format[78]
FF 0A ÿ␊
00 01 00 00 00 ␀␁␀␀␀ 0 ttf
tte
dfont 		TrueType font
4F 54 54 4F OTTO 0 otf OpenType font[79]
23 25 4D 6F 64 75 6C 65 #%Module 0 Modulefile for Environment Modules[80]
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 blobs) is a read-only, compressed data store with dictionary-like interface[81]
AC ED ’ 0 Serialized Java Data[82]
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)[83]
48 5a 4c 52 00 00 00 18 HZLR 0 hazelrules Noodlesoft Hazel [84]
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[85]
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
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

See also

References

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