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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <title>JPEG Tags</title> <link rel=stylesheet type='text/css' href='style.css' title='Style'> </head> <body> <h2 class=top>JPEG Tags</h2> <p>This table lists information extracted by ExifTool from JPEG images.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Tag ID</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td>'APP0'</td> <td>JFIF <br>JFXX <br>CIFF <br>AVI1 <br>Ocad</td> <td class=c>-<br>-<br>-<br>-<br>-</td> <td>--> <a href='JFIF.html'>JFIF Tags</a> <br>--> <a href='JFIF.html#Extension'>JFIF Extension Tags</a> <br>--> <a href='CanonRaw.html'>CanonRaw Tags</a> <br>--> <a href='JPEG.html#AVI1'>JPEG AVI1 Tags</a> <br>--> <a href='JPEG.html#Ocad'>JPEG Ocad Tags</a></td></tr> <tr class=b> <td>'APP1'</td> <td>EXIF <br>ExtendedXMP <br>XMP <br>QVCI <br>FLIR</td> <td class=c>-<br>-<br>-<br>-<br>-</td> <td>--> <a href='EXIF.html'>EXIF Tags</a> <br>--> <a href='XMP.html'>XMP Tags</a> <br>--> <a href='XMP.html'>XMP Tags</a> <br>--> <a href='Casio.html#QVCI'>Casio QVCI Tags</a> <br>--> <a href='FLIR.html#FFF'>FLIR FFF Tags</a></td></tr> <tr> <td>'APP2'</td> <td>ICC_Profile <br>FPXR <br>MPF <br>PreviewImage</td> <td class=c>-<br>-<br>-<br>no</td> <td>--> <a href='ICC_Profile.html'>ICC_Profile Tags</a> <br>--> <a href='FlashPix.html'>FlashPix Tags</a> <br>--> <a href='MPF.html'>MPF Tags</a> <br><span class=n>(Samsung APP2 preview image)</span></td></tr> <tr class=b> <td>'APP3'</td> <td>Meta <br>Stim <br>PreviewImage</td> <td class=c>-<br>-<br>no</td> <td>--> <a href='Kodak.html#Meta'>Kodak Meta Tags</a> <br>--> <a href='Stim.html'>Stim Tags</a> <br><span class=n>(Samsung/HP preview image)</span></td></tr> <tr> <td>'APP4'</td> <td>Scalado <br>FPXR <br>PreviewImage</td> <td class=c>-<br>-<br>no</td> <td>--> <a href='Scalado.html'>Scalado Tags</a> <br>--> <a href='FlashPix.html'>FlashPix Tags</a> <br><span class=n>(continued from APP3)</span></td></tr> <tr class=b> <td>'APP5'</td> <td>RMETA <br>PreviewImage</td> <td class=c>-<br>no</td> <td>--> <a href='Ricoh.html#RMETA'>Ricoh RMETA Tags</a> <br><span class=n>(continued from APP4)</span></td></tr> <tr> <td>'APP6'</td> <td>EPPIM <br>NITF <br>HP_TDHD</td> <td class=c>-<br>-<br>-</td> <td>--> <a href='JPEG.html#EPPIM'>JPEG EPPIM Tags</a> <br>--> <a href='JPEG.html#NITF'>JPEG NITF Tags</a> <br>--> <a href='HP.html#TDHD'>HP TDHD Tags</a></td></tr> <tr class=b> <td>'APP7'</td> <td>Pentax <br>Qualcomm</td> <td class=c>-<br>-</td> <td>--> <a href='Pentax.html'>Pentax Tags</a> <br>--> <a href='Qualcomm.html'>Qualcomm Tags</a></td></tr> <tr> <td>'APP8'</td> <td>SPIFF</td> <td class=c>-</td> <td>--> <a href='JPEG.html#SPIFF'>JPEG SPIFF Tags</a></td></tr> <tr class=b> <td>'APP9'</td> <td>MediaJukebox</td> <td class=c>-</td> <td>--> <a href='JPEG.html#MediaJukebox'>JPEG MediaJukebox Tags</a></td></tr> <tr> <td>'APP10'</td> <td>Comment</td> <td class=c>no</td> <td><span class=s><span class=n>(PhotoStudio Unicode comment)</span></span></td></tr> <tr class=b> <td>'APP11'</td> <td>JPEG-HDR</td> <td class=c>-</td> <td>--> <a href='JPEG.html#HDR'>JPEG HDR Tags</a></td></tr> <tr> <td>'APP12'</td> <td>PictureInfo <br>Ducky</td> <td class=c>-<br>-</td> <td>--> <a href='APP12.html#PictureInfo'>APP12 PictureInfo Tags</a> <br>--> <a href='APP12.html#Ducky'>APP12 Ducky Tags</a></td></tr> <tr class=b> <td>'APP13'</td> <td>Photoshop <br>Adobe_CM</td> <td class=c>-<br>-</td> <td>--> <a href='Photoshop.html'>Photoshop Tags</a> <br>--> <a href='JPEG.html#AdobeCM'>JPEG AdobeCM Tags</a></td></tr> <tr> <td>'APP14'</td> <td>Adobe</td> <td class=c>yes</td> <td>--> <a href='JPEG.html#Adobe'>JPEG Adobe Tags</a></td></tr> <tr class=b> <td>'APP15'</td> <td>GraphicConverter</td> <td class=c>-</td> <td>--> <a href='JPEG.html#GraphConv'>JPEG GraphConv Tags</a></td></tr> <tr> <td>'COM'</td> <td>Comment</td> <td class=c>yes</td> <td> </td></tr> <tr class=b> <td>'DQT'</td> <td>DefineQuantizationTable</td> <td class=c>no</td> <td><span class=s><span class=n>(used to calculate the Extra JPEGDigest tag value)</span></span></td></tr> <tr> <td>'SOF'</td> <td>StartOfFrame</td> <td class=c>-</td> <td>--> <a href='JPEG.html#SOF'>JPEG SOF Tags</a></td></tr> <tr class=b> <td>'Trailer'</td> <td>AFCP <br>CanonVRD <br>FotoStation <br>PhotoMechanic <br>MIE <br>Samsung <br>PreviewImage</td> <td class=c>-<br>-<br>-<br>-<br>-<br>-<br>yes</td> <td>--> <a href='AFCP.html'>AFCP Tags</a> <br>--> <a href='CanonVRD.html'>CanonVRD Tags</a> <br>--> <a href='FotoStation.html'>FotoStation Tags</a> <br>--> <a href='PhotoMechanic.html'>PhotoMechanic Tags</a> <br>--> <a href='MIE.html'>MIE Tags</a> <br>--> <a href='Samsung.html#Trailer'>Samsung Trailer Tags</a></td></tr> </table></td></tr></table></blockquote> <h2><a name='AVI1'>JPEG AVI1 Tags</a></h2> <p>This information may be found in APP0 of JPEG image data from AVI videos.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Index1</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td class=r title='0 = 0x0'>0</td> <td>InterleavedField</td> <td class=c>no</td> <td><span class=s>0 = Not Interleaved <br>1 = Odd <br>2 = Even</span></td></tr> </table></td></tr></table></blockquote> <h2><a name='Ocad'>JPEG Ocad Tags</a></h2> <p>Tags extracted from the JPEG APP0 "Ocad" segment (found in Photobucket images).</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Tag ID</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td>'Rev'</td> <td>OcadRevision</td> <td class=c>no</td> <td> </td></tr> </table></td></tr></table></blockquote> <h2><a name='EPPIM'>JPEG EPPIM Tags</a></h2> <p>APP6 is used in by the Toshiba PDR-M700 to store a TIFF structure containing PrintIM information.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Tag ID</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td title='0xc4a5 = 50341'>0xc4a5</td> <td>PrintIM</td> <td class=c>undef</td> <td>--> <a href='PrintIM.html'>PrintIM Tags</a></td></tr> </table></td></tr></table></blockquote> <h2><a name='NITF'>JPEG NITF Tags</a></h2> <p>Information in APP6 used by the National Imagery Transmission Format. See <a href="http://www.gwg.nga.mil/ntb/baseline/docs/n010697/bwcguide25aug98.pdf">http://www.gwg.nga.mil/ntb/baseline/docs/n010697/bwcguide25aug98.pdf</a> for the official specification.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Index1</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td class=r title='0 = 0x0'>0</td> <td>NITFVersion</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td class=r title='2 = 0x2'>2</td> <td>ImageFormat</td> <td class=c>no</td> <td><span class=s>'B' = IMode B</span></td></tr> <tr> <td class=r title='3 = 0x3'>3</td> <td>BlocksPerRow</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td class=r title='5 = 0x5'>5</td> <td>BlocksPerColumn</td> <td class=c>no</td> <td> </td></tr> <tr> <td class=r title='7 = 0x7'>7</td> <td>ImageColor</td> <td class=c>no</td> <td><span class=s>0 = Monochrome</span></td></tr> <tr class=b> <td class=r title='8 = 0x8'>8</td> <td>BitDepth</td> <td class=c>no</td> <td> </td></tr> <tr> <td class=r title='9 = 0x9'>9</td> <td>ImageClass</td> <td class=c>no</td> <td><span class=s>0 = General Purpose <br>4 = Tactical Imagery</span></td></tr> <tr class=b> <td class=r title='10 = 0xa'>10</td> <td>JPEGProcess</td> <td class=c>no</td> <td><span class=s>1 = Baseline sequential DCT, Huffman coding, 8-bit samples <br>4 = Extended sequential DCT, Huffman coding, 12-bit samples</span></td></tr> <tr> <td class=r title='11 = 0xb'>11</td> <td>Quality</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td class=r title='12 = 0xc'>12</td> <td>StreamColor</td> <td class=c>no</td> <td><span class=s>0 = Monochrome</span></td></tr> <tr> <td class=r title='13 = 0xd'>13</td> <td>StreamBitDepth</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td class=r title='14 = 0xe'>14</td> <td>Flags</td> <td class=c>no</td> <td> </td></tr> </table></td></tr></table></blockquote> <h2><a name='SPIFF'>JPEG SPIFF Tags</a></h2> <p>This information is found in APP8 of SPIFF-style JPEG images (the "official" yet rarely used JPEG file format standard: Still Picture Interchange File Format). See <a href="http://www.jpeg.org/public/spiff.pdf">http://www.jpeg.org/public/spiff.pdf</a> for the official specification.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Index1</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td class=r title='0 = 0x0'>0</td> <td>SPIFFVersion</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td class=r title='2 = 0x2'>2</td> <td>ProfileID</td> <td class=c>no</td> <td><span class=s>0 = Not Specified <br>1 = Continuous-tone Base <br>2 = Continuous-tone Progressive <br>3 = Bi-level Facsimile <br>4 = Continuous-tone Facsimile</span></td></tr> <tr> <td class=r title='3 = 0x3'>3</td> <td>ColorComponents</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td class=r title='6 = 0x6'>6</td> <td>ImageHeight</td> <td class=c>no</td> <td><span class=s><span class=n>(at index 4 in specification, but there are 2 extra bytes here in my only SPIFF sample, version 1.2)</span></span></td></tr> <tr> <td class=r title='10 = 0xa'>10</td> <td>ImageWidth</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td class=r title='14 = 0xe'>14</td> <td>ColorSpace</td> <td class=c>no</td> <td><table class=cols><tr> <td>0 = Bi-level <br>1 = YCbCr, ITU-R BT 709, video <br>2 = No color space specified <br>3 = YCbCr, ITU-R BT 601-1, RGB <br>4 = YCbCr, ITU-R BT 601-1, video <br>8 = Gray-scale <br>9 = PhotoYCC <br>10 = RGB <br>11 = CMY <br>12 = CMYK <br>13 = YCCK <br>14 = CIELab</td></tr></table> </td></tr> <tr> <td class=r title='15 = 0xf'>15</td> <td>BitsPerSample</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td class=r title='16 = 0x10'>16</td> <td>Compression</td> <td class=c>no</td> <td><table class=cols><tr> <td>0 = Uncompressed, interleaved, 8 bits per sample <br>1 = Modified Huffman <br>2 = Modified READ <br>3 = Modified Modified READ <br>4 = JBIG <br>5 = JPEG</td></tr></table> </td></tr> <tr> <td class=r title='17 = 0x11'>17</td> <td>ResolutionUnit</td> <td class=c>no</td> <td><span class=s>0 = None <br>1 = inches <br>2 = cm</span></td></tr> <tr class=b> <td class=r title='18 = 0x12'>18</td> <td>YResolution</td> <td class=c>no</td> <td> </td></tr> <tr> <td class=r title='22 = 0x16'>22</td> <td>XResolution</td> <td class=c>no</td> <td> </td></tr> </table></td></tr></table></blockquote> <h2><a name='MediaJukebox'>JPEG MediaJukebox Tags</a></h2> <p>Tags found in the XML metadata of the "Media Jukebox" APP9 segment.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td>Album</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td>Caption</td> <td class=c>no</td> <td> </td></tr> <tr> <td>Date</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td>Keywords</td> <td class=c>no</td> <td> </td></tr> <tr> <td>Name</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td>People</td> <td class=c>no</td> <td> </td></tr> <tr> <td>Places</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td>Tool_Name</td> <td class=c>no</td> <td> </td></tr> <tr> <td>Tool_Version</td> <td class=c>no</td> <td> </td></tr> </table></td></tr></table></blockquote> <h2><a name='HDR'>JPEG HDR Tags</a></h2> <p>Information extracted from APP11 of a JPEG-HDR image.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Tag ID</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td>'RatioImage'</td> <td>RatioImage</td> <td class=c>no</td> <td><span class=s><span class=n>(the embedded JPEG-compressed ratio image)</span></span></td></tr> <tr class=b> <td>'alp'</td> <td>Alpha</td> <td class=c>no</td> <td> </td></tr> <tr> <td>'bet'</td> <td>Beta</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td>'cor'</td> <td>CorrectionMethod</td> <td class=c>no</td> <td> </td></tr> <tr> <td>'ln0'</td> <td>Ln0</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td>'ln1'</td> <td>Ln1</td> <td class=c>no</td> <td> </td></tr> <tr> <td>'s2n'</td> <td>S2n</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td>'ver'</td> <td>JPEG-HDRVersion</td> <td class=c>no</td> <td> </td></tr> </table></td></tr></table></blockquote> <h2><a name='AdobeCM'>JPEG AdobeCM Tags</a></h2> <p>The "Adobe_CM" APP13 segment presumably contains color management information, but the meaning of the data is currently unknown. If anyone has an idea about what this means, please let me know.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Index2</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td class=r title='0 = 0x0'>0</td> <td>AdobeCMType</td> <td class=c>no</td> <td> </td></tr> </table></td></tr></table></blockquote> <h2><a name='Adobe'>JPEG Adobe Tags</a></h2> <p>The "Adobe" APP14 segment stores image encoding information for DCT filters. This segment may be copied or deleted as a block using the Extra "Adobe" tag, but note that it is not deleted by default when deleting all metadata because it may affect the appearance of the image.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Index2</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td class=r title='0 = 0x0'>0</td> <td>DCTEncodeVersion</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td class=r title='1 = 0x1'>1</td> <td>APP14Flags0</td> <td class=c>no</td> <td><span class=s>0x0 = (none) <br>Bit 15 = Encoded with Blend=1 downsampling</span></td></tr> <tr> <td class=r title='2 = 0x2'>2</td> <td>APP14Flags1</td> <td class=c>no</td> <td><span class=s>0x0 = (none)</span></td></tr> <tr class=b> <td class=r title='3 = 0x3'>3</td> <td>ColorTransform</td> <td class=c>no</td> <td><span class=s>0 = Unknown (RGB or CMYK) <br>1 = YCbCr <br>2 = YCCK</span></td></tr> </table></td></tr></table></blockquote> <h2><a name='GraphConv'>JPEG GraphConv Tags</a></h2> <p>APP15 is used by GraphicConverter to store JPEG quality.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Tag ID</th><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td>'Q'</td> <td>Quality</td> <td class=c>no</td> <td> </td></tr> </table></td></tr></table></blockquote> <h2><a name='SOF'>JPEG SOF Tags</a></h2> <p>This information is extracted from the JPEG Start Of Frame segment.</p> <blockquote> <table class=frame><tr><td> <table class=inner cellspacing=1> <tr class=h><th>Tag Name</th> <th>Writable</th><th>Values / <span class=n>Notes</span></th></tr> <tr> <td>BitsPerSample</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td>ColorComponents</td> <td class=c>no</td> <td> </td></tr> <tr> <td>EncodingProcess</td> <td class=c>no</td> <td><span class=s>0x0 = Baseline DCT, Huffman coding <br>0x1 = Extended sequential DCT, Huffman coding <br>0x2 = Progressive DCT, Huffman coding <br>0x3 = Lossless, Huffman coding <br>0x5 = Sequential DCT, differential Huffman coding <br>0x6 = Progressive DCT, differential Huffman coding <br>0x7 = Lossless, Differential Huffman coding <br>0x9 = Extended sequential DCT, arithmetic coding <br>0xa = Progressive DCT, arithmetic coding <br>0xb = Lossless, arithmetic coding <br>0xd = Sequential DCT, differential arithmetic coding <br>0xe = Progressive DCT, differential arithmetic coding <br>0xf = Lossless, differential arithmetic coding</span></td></tr> <tr class=b> <td>ImageHeight</td> <td class=c>no</td> <td> </td></tr> <tr> <td>ImageWidth</td> <td class=c>no</td> <td> </td></tr> <tr class=b> <td>YCbCrSubSampling</td> <td class=c>no</td> <td><span class=s><span class=n>(calculated from components table)</span></span><table class=cols><tr> <td>'1 1' = YCbCr4:4:4 (1 1) <br>'1 2' = YCbCr4:4:0 (1 2) <br>'1 4' = YCbCr4:4:1 (1 4) <br>'2 1' = YCbCr4:2:2 (2 1) <br>'2 2' = YCbCr4:2:0 (2 2) <br>'2 4' = YCbCr4:2:1 (2 4) <br>'4 1' = YCbCr4:1:1 (4 1) <br>'4 2' = YCbCr4:1:0 (4 2)</td></tr></table> </td></tr> </table></td></tr></table></blockquote> <hr> (This document generated automatically by Image::ExifTool::BuildTagLookup) <br><i>Last revised Sep 17, 2014</i> <p class=lf><a href='index.html'><-- ExifTool Tag Names</a></p> </body> </html>