List of obscure and obtuse file format signatures

obsigs.html, encoding:utf-8, version:005.108, updated:2023-11-02

SignatureText (CP-1252)OffsetsExtensionsMIME TypesWikidataDescription
00 00 50 52 4F 54"..PROT"0DOC; PTXapplication/x-protextQ105866027Arnor Protext 6 Document
00 53 43 52 4D".SCRM"0S3Maudio/x-modQ1461901Scream Tracker 3 Module
00 61 73 6D".asm"0WASMapplication/wasmQ56827096WebAssembly Binary
0A A1 67 76 65 72 73 69 6F 6E 02".¡gversion."0CAR??Content Addressable Archive (v2)
0D 0A 56 65 72 73 69 6F 6E 3A 56 69 76 6F"..Version:Vivo"3VIV; VIVOvideo/vnd.vivo; video/vivoQ49989699VivoActive Video
11 AF".¯"4FLIvideo/x-fli; video/x-flicQ5426535Autodesk Amimator FLIC
12 AF".¯"4FLCvideo/x-flc; video/x-flicQ5426535Autodesk Animator Pro FLIC
1A 01 29 65 05 00 01 00"..)e...."0JLN??Seize The Day Calendar Journal
1B 47".G"0RLEimage/x-compuserve-rleQ28205858CompuServe RLE Image
1F 9D".."0Zapplication/x-compressQ29209269Unix Compress File
21 42 4D 41"!BMA"0BMAapplication/x-bma-compressedQ105854232BMA Compressed Archive
2A 2A 41 43 45 2A 2A"**ACE**"6ACEapplication/x-ace-compressedQ288256ACE Compressed Archive
2E 50 42 46".PBF"0PBFimage/x-pbfQ28207064Portable Bitmap Format
2E 52 4D 46".RMF"0RM; RA; RVapplication/vnd.rn-realmedia; video/vnd.rn-realvideoQ1075962RealMedia Audio/Video Container
2E 72 61 FD".raý"0RA; RAMaudio/vnd.rn-realaudioQ201093RealAudio Stream
31 BE"1¾"0WRIapplication/mswriteQ27526866Microsoft Write Document
32 BE"2¾"0WRIapplication/mswriteQ27526866Microsoft Write Document (containing OLE objects)
34 12"4."0PIC; CLPimage/x-pcpaint-picQ28206876PCPaint Pictor Image
37 37 37"777"0777application/x-777-compressedQ105855097777 Compressed Archive
37 6B 53 74"7kSt"0ZPAQapplication/x-zpaqQ47487560ZPAQ Compressed Archive (old version)
3F 5F 03 00"?_.."0HLPapplication/winhlpQ1144005Microsoft WinHelp File
41 4C 5A 01"ALZ."0ALZapplication/x-alz-compressedQ28445588ALZip Compressed Archive
41 4D 42 31"AMB1"0AMB??Ancient Machine Book
42 45 47 49 4E 3A 56 43 41 4C 45 4E 44 41 52"BEGIN:VCALENDAR"0ICAL; ICS; IFB; IFMtext/calendarQ284651iCalendar Calendaring and Scheduling Information
42 49 58 30 C1 B8 03 9A F1"BIX0Á..ñ"0BIXapplication/x-bix-compressedQ105854971BIX Compressed Archive
42 50 47 FB"BPGû"0BPGimage/bpg; image/x-bpgQ18640977Better Portable Graphics Image
43 44 30 30 31"CD001"32769; 34817; 36865ISOapplication/vnd.efi-iso; application/x-iso9660-imageQ815645ISO-9660 CD Disc Image
43 52 45 47"CREG"0DAT; DAO; POL??Windows 9x Registry File
44 49 43 4D"DICM"128DCMapplication/dicomQ28205908DICOM Media File
44 4B 4F"DKO"0CRDapplication/x-mscardfileQ83884456Microsoft Cardfile (UNICODE text)
44 4F 43 01"DOC."0000?Q88470357LocoScript PC Document
44 56 4D 20"DVM "0DVM??Dunfield Virtual Machine Binary
44 61 79 21 04 01 01 00"Day!...."0ART??Seize The Day Calendar Art
44 AF"D¯"4FLH; FLTvideo/x-flic?DTA/EGI FLIC Animation
45 47 47 41"EGGA"0EGGapplication/x-egg-compressedQ5323042ALZip Egg Compressed Archive
46 49 46 01"FIF."0FIFimage/fif; image/x-fifQ1440353Fractal Image File
46 4C 49 46"FLIF"0FLIFimage/flifQ21104579Free Lossless Image Format
46 4F 52 4D xx xx xx xx 41 49 46 46"FORM....AIFF"0AIF; AIFF; AIFC; IFFaudio/aiff; audio/x-aiffQ758853Audio Interchange File Format (IFF)
46 4F 52 4D xx xx xx xx 49 4C 42 4D"FORM....ILBM"0LBM; ILBM; IFFimage/x-ilbm; image/x-iffQ2389386Amiga Interleaved Bitmap (IFF)
46 4F 52 4D xx xx xx xx 53 57 52 54"FORM....SWRT"0AFW??Amiga Final Writer Document (IFF)
46 55 49 46"FUIF"0FUIFimage/fuifQ72886200Free Universal Image Format
48 41"HA"0HAapplication/ha-compressed?HA Compressed Archive
48 44 52 0D 0A"HDR.."0SSF??TurboCalc Spreadsheet
48 57 50 20 44 6F 63 75 6D 65 6E 74"HWP Document"0HWPapplication/x-hwpQ28757958Hangul Word Processor Document
49 4D 50 4D"IMPM"0ITaudio/x-modQ9296340Impulse Tracker Module
49 53 63 28"ISc("0CAB; HDR?Q28758102InstallShield CAB Archive
49 54 53 46"ITSF"0CHMapplication/vnd.ms-htmlhelpQ1023647Microsoft Compiled HTML
4A 49 46 39 39 61"JIF99a"0JIFimage/x-jifQ28206407Jeff's Image Format
4A 4E"JN"0669audio/x-modQ9135198Composer Extended 669 Module
4A 4F 59 01"JOY."0000?Q88476614PCW LocoScript Document
4B 77 69 6B 44 72 61 77"KwikDraw"0KWKimage/x-xkwk?KwikDraw (version ≤ 2.02)
4C 52 5A 49"LRZI"0LRZapplication/x-lrzipQ28770337Lrzip Compressed File
4C 5A 49 50"LZIP"0LZ; LZIPapplication/x-lzipQ105854729Lzip Compressed File
4C 5A 58"LZX"0LZXapplication/x-lzxQ28770313Amiga LZX Compressed Archive
4D 47 43"MGC"0CRDapplication/x-mscardfileQ83884456Microsoft Cardfile
4D 53 43 46"MSCF"0CABapplication/x-cab-compressedQ194831Microsoft Cabinet Archive
4D 53 57 49 4D 00 00 00"MSWIM..."0WIM; RWM; SWMapplication/x-ms-wimQ105856460Windows Imaging Format
4E 52 52 44 30 30"NRRD00"0NRRDimage/x-nrrdQ83548525Nearly Raw Raster Data
4E F5 46 E9 6C E5"NuFile"0BXY; SDK; SHKapplication/x-nofxQ60558754ShrinkIt NoFX Archive
4F 56 49 50 64 00"OVIPd.""0OVPimage/x-ovip?OVIP Image File
4e 53 56"NSV"0NSVvideo/x-nsvQ7069009Nullsoft Video
50 41 43 4B"PACK"0PAKapplication/x-pakQ105854676Quake Package Archive
51 46 49 FB"QFIû"0IMG; QCOW?Q1052000QEMU QCow Disk Image
52 00 65 00 67 00 69 00 73 00 74 00 72 00 79 00"R.e.g.i.s.t.r.y."18REGapplication/x-regedit?Windows Registry Editor 5.00 Data (Windows 2000+)
52 45 47 45 44 49 54"REGEDIT"0REGapplication/x-regeditQ105860515Windows Registry Editor 4.0 Data (Windows 9x/NT4)
52 45 7E 5E"RE~^"0RARapplication/x-rar-compressedQ243303RAR Compressed Archive (version ≤ 1.40)
52 49 46 46 xx xx xx xx 53 57 52 54"RIFF....SWRT"0FWT??Final Writer for Windows Document (RIFF)
52 49 46 46 xx xx xx xx 57 45 42 50"RIFF....WEBP"0WEBPimage/webpQ62617958Google WebP Image (RIFF)
52 49 58"RIX"0RIX; SCX; VMGimage/x-rixQ28205846ColoRIX Image
52 4B"RK"-2RKapplication/x-rk-compressedQ16671949RK Compressed Archive
52 52 47"RRG"0CRDapplication/x-mscardfileQ83884456Microsoft Cardfile (including OLE objects)
52 5A 49 50"RZIP"0RZapplication/x-rzipQ105853702RZip Compressed File
52 61 72 21 1A 07 00"Rar!..."0RAR; REVapplication/vnd.rar; application/x-rar-compressedQ243303RAR Compressed Archive (version ≥ 1.50)
52 61 72 21 1A 07 01 00"Rar!...."0RAR; REVapplication/vnd.rar; application/x-rar-compressedQ243303RAR Compressed Archive (version ≥ 5.00)
53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 00"SQLite format 3."0DB3; SQLITE3application/vnd.sqlite3Q28600453SQLite Database
55 46 41 C6 D2 C1"UFAÆÒÁ"0UFAapplication/x-ufa-compressedQ75535250UFA Compressed Archive
55 48 41"UHA"0UHAapplication/x-uha-compressedQ3547199UHARC Compressed Archive
55 AA"Uª"510IMA; IMG??IBM PC Bootable Disk Image
56 41 4C 49 53 2E"VALIS."0VALISimage/x-valis?Valis Active Light Image Stream
57 41 52 43 2F"WARC/"0WARCapplication/warcQ7978505Web Archive (any version)
59 A6 6A 95"&'.""0SUN; RAS; RAST; SR; SCRimage/x-sun-rasterQ17138473Sun Raster Image
5A 49 4D 04"ZIM."0ZIMapplication/x-zimQ784695ZIM Web Content Archive
61 72 74 0D"art."0ART?Q28600253Android Runtime Binary
64 65 78 0A"dex."0DEX; ODEX?Q28600487Android Dalvik Binary
66 61 72 62 66 65 6C 64"farbfeld"0FFimage/x-faberfeldQ28206109Faberfeld Image Format
66 4C 61 43"fLaC"0FLACaudio/flacQ27881556FLAC Audio File
66 74 79 70 4D 34 41 20"ftypM4A "4M4A; MP4audio/mp4Q336316MPEG-4 Audio File (ISOBMFF)
66 74 79 70 68 65 69"ftyphei"4HEIC; HEIFimage/heic; image/heifQ24907733HEIC Image File (ISOBMFF)
68 73 71 73"hsqs"0SFSapplication/filesystem+sqshQ389314SquashFS Filesystem
69 66"if"0669audio/x-modQ9135198Composer 669 Module
6B 6F 6C 79"koly"0DMGapplication/x-apple-diskQ1228757Apple Disk Image
6C 7A 34 69"lz4i"0LZ4Iimage/x-lz4i?Geldreich's LZ4 Compressed Image
71 6F 61 66"qoaf"0QOAaudio/x-quaQ116625837Quite OK Audio Format
71 6F 69 66"qoif"0QOIimage/x-qoiQ111843814Quite OK Image Format
72 65 67 66"regf"0???Windows NT Registry Hive File
79 7A"yz"0YZ1application/x-yz1Q105854240Yamazaki Zipper Archive
7A 50 51"zPQ"0ZPAQapplication/x-zpaqQ47487560ZPAQ Compressed Archive
80 2A 5F D7"€*_×"0CIN; DPXimage/cineonQ28048413Kodak Cineon Image (Big Endian)
89 4C 5A 4F 00 0D 0A 1A 0A"‰LZO....."0LZOapplication/x-lzop-compressedQ105854029Lzop Compressed File
D7 5F 2A 80"×_*€"0CIN; DPXimage/cineonQ28048413Kodak Cineon Image (Little Endian)
DC A7 C4 FD"ܧÄý"20ZOOapplication/x-zoo-compressedQ105854413ZOO Compressed Archive (Little Endian)
EA xx xx xx xx xx xx xx xx 00"ê........."0PEAapplication/x-peazipQ105854595PeaZip Compressed Archive
F6 04 00 00 F6 04 7F 00"ö...ö..."8KWKimage/x-xkwk?KwikDraw (version ≥ 3.00)
FD 37 7A 58 5A 00"ý7zXZ"0XZapplication/x-xzQ162839XZ Compressed File
FD 4E F2 14"ýNò."446IMG??NTFS Master Boot Record
FD C4 A7 DC"ýħÜ"20ZOOapplication/x-zoo-compressedQ105854413ZOO Compressed Archive (Big Endian)
FF 57 50 43 xx xx xx xx 01 16 01 00"ÿWPC........"0WPGimage/x-wpgQ3564764WordPerfect Graphic 1.0 Image
FF 57 50 43 xx xx xx xx 01 16 02 00"ÿWPC........"0WPGimage/x-wpgQ117318924WordPerfect Graphic 2.0 Image