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File Signature

File signatures, also known as magic numbers, play a critical role in file identification and analysis. These unique sequences of bytes are located at the beginning of a file and are typically represented as hexadecimal values. By using file signatures, programs can determine the format and structure of a file, which is essential for proper handling. Having a solid understanding of file signatures can be helpful in various scenarios, such as data recovery efforts, malware analysis, and general file management. With this knowledge, you can work more efficiently and effectively with your digital files.
Hex SignatureFile ExtensionASCII Signature File Description
47 49 46 38 37 61.gifGIF87a image file
47 49 46 38 39 61.gifGIF89a image file
FF D8 FF E1 xx xx 45 78 69 66 00.jpg, .jpegExif image file
FF D8 FF E2 xx xx.jpg, .jpegCanon RAW (CR2) image file
89 50 4E 47 0D 0A 1A 0A.pngPortable Network Graphics (PNG) image file
49 49 2A 00.tif, .tiffTagged Image File Format (TIFF) image file
42 4D.bmpBitmap (BMP) image file
25 50 44 46.pdfPortable Document Format (PDF) file
25 21 50 53 2D 41 64 6F 62 65.psPostScript (PS) file
7B 5C 72 74 66 31.rtfRich Text Format (RTF) file
46 4C 56 01.flvFlash video file
46 4F 52 4D 00.aif, .aiffAudio Interchange File Format (AIFF) file
49 44 33.mp3MPEG-1/2 Audio Layer 3 (MP3) file
4D 54 68 64.mid, .midiMIDI sound file
52 49 46 46 xx xx xx xx 57 41 56 45 66 6D 74 20.wavWaveform Audio File Format (WAV) file
52 49 46 46 xx xx xx xx 41 56 49 20.aviAudio Video Interleave (AVI) video file
30 26 B2 75 8E 66 CF 11 A6 D9 00 AA 00 62 CE 6C.wmvWindows Media Video (WMV) file
1A 45 DF A3.mkvMatroska video file
25 52 41 52 0A 25 50 44 46.rarRAR archive file
50 4B 03 04.zipZIP archive file
50 4B 4C 49 54 45.zipPKLITE compressed ZIP archive file
7F 45 4C 46.elfExecutable and Linkable Format (ELF) file
4D 5A.exe, .dllWindows Executable/DLL file
43 57 53.swfShockwave Flash (SWF) file
46 4C 56 01.flvFlash video file
3C 3F 78 6D 6C 20.xmlXML file
5F 27 A8 89.dbSQLite database file
7B 5C 72 74 66 31.rtfRich Text Format (RTF) file
3C 3F 78 6D 6C 20.xmlXML file
21 3C 61 72 63 68 3E.debDebian package file
1F 8B 08.gzGzip compressed file
37 7A BC AF 27 1C.7z7-Zip compressed file
FD 37 7A 58 5A 00.xzXZ compressed file
78 01.zlib, .deflatezlib compressed file
04 22 4D 18.lz4LZ4 compressed file
53 51 4C 69 74 65 20 66 6F 72 6D 61 74 20 33 2E.sqlite3SQLite3 database file
37 E4 53 96 C9 DB D6 3C.sqliteSQLite database file
21 3C 61 72 63 68 3E.rpmRPM package file
4D 5A.exe, .dllWindows Executable/DLL file
4D 5A.scrWindows screen saver file
4D 5A.cplWindows Control Panel item file
4D 5A.ocxWindows ActiveX control file
4D 5A.sysWindows system driver file
00 01 00 00 00.ttf, .otfTrueType/OpenType font file
3C 3F 78 6D 6C 20.svgScalable Vector Graphics (SVG) file
47 49 42 38 34 61.gbrGIMP brush file
42 50 47 FB.bpgBetter Portable Graphics (BPG) image file
25 21 50 6F 73 74 53 63 72 69 70 74 20 45 50 53.epsEncapsulated PostScript (EPS) file
37 7A BC AF 27 1C.7z7-Zip compressed file
30 31 4F 52 44 4E 41 4E 44.ord, .orfOlympus RAW (ORF) image file
4D 4D 00 2A.tiff, .tifBigTIFF image file
4D 4D 00 2B.tiff, .tifBigTIFF image file
4D 4D 00 2A.dngDigital Negative (DNG) image file
46 4F 52 4D 00.aif, .aiffAudio Interchange File Format (AIFF) file
52 49 46 46 xx xx xx xx 57 41 56 45.wavWaveform Audio File Format (WAV) file
49 44 33.mp3MPEG-1 Audio Layer 3 (MP3) file
FF F1.mpg, .mpegMPEG-1 video file
89 50 4E 47 0D 0A 1A 0A.pngPortable Network Graphics (PNG) file
FF D8 FF E0 xx xx 4A 46 49 46 00.jpg, .jpegJPEG/JFIF image file
42 4D.bmpBitmap (BMP) image file
49 49 2A 00.tif, .tiffTagged Image File Format (TIFF) file
52 49 46 46 xx xx xx xx 57 41 56 45.aviAudio Video Interleave (AVI) video file
52 49 46 46 xx xx xx xx 41 56 49 20.aviAudio Video Interleave (AVI) video file
46 4C 56 01.flvFlash video file
00 01 BA 21.mpg, .mpegMPEG-2 video file
30 26 B2 75 8E 66 CF 11 A6 D9 00 AA 00 62 CE 6C.asf, .wmvAdvanced Systems Format (ASF)/Windows Media Video (WMV) file
4D 5A 50 00 02 00 00 00 04 00 0F 00 FF.pdfAdobe Portable Document Format (PDF) file
52 61 72 21 1A 07 00.rarRAR compressed archive file
1F 8B 08.gzGzip compressed file
1F 9D.tar.ZCompressed Tarball (compressed using compress)
1F A0.tar.ZCompressed Tarball (compressed using compress)
1F A3.tar.ZCompressed Tarball (compressed using compress)
1F B5.tar.ZCompressed Tarball (compressed using compress)
1F 8B 08.tar.gz, .tgzGzip compressed Tar archive file
1F 9D 90.tar.ZCompressed Tarball (compressed using gzip)
1F A0 xx.tar.ZCompressed Tarball (compressed using compress)
1F A3 xx.tar.ZCompressed Tarball (compressed using compress)
1F B5 xx.tar.ZCompressed Tarball (compressed using compress)
50 4B 03 04.zipZip archive file
50 4B 05 06.zipZip archive file
50 4B 07 08.zipZip archive file
7B 5C 72 74 66 31.rtfRich Text Format (RTF) file
64 65 78 0A 30 33.dexDalvik Executable (DEX) file
4D 5A.exe, .dllWindows/DOS executable file
47 4E 55 50.gnuGNU Info Reader file
FD FF FF.jarJava Archive (JAR) file
CA FE BA BE.classJava bytecode class file
AC ED 00 05 73 72 00.serJava Serialized Object file
52 61 64 69 75 73 20 53 65 65 64 66 69 6C 65.datWinNT Registry / Windows 2000 Registry Hive
00 01 42 44.vmdkVirtual Machine Disk (VMDK) file
23 20 64 65 62 69 61 6E 2D 62 61 73 68.debDebian software package file
5F 27 A8 89.rpmRPM package file
3C 3F 78 6D 6C 20.xmlExtensible Markup Language (XML) file
3C 21 44 4F 43 54 59 50 45.docx, .xlsx, .pptxOffice Open XML (OOXML) file
50 4B 03 04 14 00 06 00 08 00.docx, .xlsx, .pptxOffice Open XML (OOXML) file
D0 CF 11 E0 A1 B1 1A E1.doc, .xls, .pptMicrosoft Office file
00 01 00 00 00.icoIcon file
1F 8B 08 00.tarTar archive file
4C 01.lnkWindows Shortcut file
4D 56.mboxEmail mailbox file
1B 4C 75 61.luaLua programming language source code file
4D 5A 90 00 03 00 00 00 04 00 00 00 FF.ocx, .dllWindows system file
47 49 46 38 37 61.gifGraphics Interchange Format (GIF) image file
FF D8 FF E0 00 10 4A 46 49 46.jpg, .jpegJPEG/JFIF image file
89 50 4E 47 0D 0A 1A 0A.pngPortable Network Graphics (PNG) image file
49 49 2A 00.tif, .tiffTagged Image File Format (TIFF) image file
42 4D.bmpBitmap (BMP) image file
25 21 50 53 2D.psPostScript (PS) file
47 42 52 20.cbrComic Book Archive (CBA, CBZ, CBR, CB7, CBT) file
50 4B 03 04 0A 00 00 00 00 00 9D 5B.jarJAR archive file
50 4B 03 04 0A 00 00 00 00 00 20 AF.jarJAR archive file
50 4B 03 04 14 00 02 00 08 00.odt, .ods, .odpOpenDocument Format (ODF) file
50 4B 03 04 0A 00 00 00 00 00 3C 3A.odt, .ods, .odpOpenDocument Format (ODF) file
50 4B 03 04 14 00 06 00 08 00.docx, .xlsx, .pptxOffice Open XML (OOXML) file
FF FE.txtUnicode text file
EF BB BF.txtUTF-8 encoded text file

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