The most common EXIF tags

Baseline EXIF tags are those tags that are listed as part of the core of EXIF standards

Code	Hex	Name	Description
1		InteropIndex
2		InteropVersion

254	00FE	NewSubfileType	A general indication of the kind of data contained in this subfile.
255	00FF	SubfileType	A general indication of the kind of data contained in this subfile.
256	0100	ImageWidth	The number of columns in the image, i.e., the number of pixels per row.
257	0101	ImageLength	The number of rows of pixels in the image.
258	0102	BitsPerSample	Number of bits per component.
259	0103	Compression	Compression scheme used on the image data.
262	0106	PhotometricInterpretation	The color space of the image data.
263	0107	Threshholding	For black and white TIFF files that represent shades of gray, the technique used to convert from gray to black and white pixels.
264	0108	CellWidth	The width of the dithering or halftoning matrix used to create a dithered or halftoned bilevel file.
265	0109	CellLength	The length of the dithering or halftoning matrix used to create a dithered or halftoned bilevel file.
266	010A	FillOrder	The logical order of bits within a byte.
270	010E	ImageDescription	A string that describes the subject of the image.
271	010F	Make	The scanner/camera manufacturer.
272	0110	Model	The scanner/camera model name or number.
273	0111	StripOffsets	For each strip, the byte offset of that strip.
274	0112	Orientation	The orientation of the image with respect to the rows and columns.
277	0115	SamplesPerPixel	The number of components per pixel.
278	0116	RowsPerStrip	The number of rows per strip.
279	0117	StripByteCounts	For each strip, the number of bytes in the strip after compression.
280	0118	MinSampleValue	The minimum component value used.
281	0119	MaxSampleValue	The maximum component value used.
282	011A	XResolution	The number of pixels per ResolutionUnit in the ImageWidth direction.
283	011B	YResolution	The number of pixels per ResolutionUnit in the ImageLength direction.
284	011C	PlanarConfiguration	How the components of each pixel are stored.
288	0120	FreeOffsets	For each string of contiguous unused bytes in a TIFF file, the byte offset of the string.
289	0121	FreeByteCounts	For each string of contiguous unused bytes in a TIFF file, the number of bytes in the string.
290	0122	GrayResponseUnit	The precision of the information contained in the GrayResponseCurve.
291	0123	GrayResponseCurve	For grayscale data, the optical density of each possible pixel value.
296	0128	ResolutionUnit	The unit of measurement for XResolution and YResolution.
305	0131	Software	Name and version number of the software package(s) used to create the image.
306	0132	DateTime	Date and time of image creation.
315	013B	Artist	Person who created the image.
316	013C	HostComputer	The computer and/or operating system in use at the time of image creation.
320	0140	ColorMap	A color map for palette color images.
338	0152	ExtraSamples	Description of extra components.
33432	8298	Copyright	Copyright notice.

Extension EXIT tags are those tags listed as part of EXIF features that may not be supported by all EXIF readers, according to the EXIF specification

269	010D	DocumentName	The name of the document from which this image was scanned.
285	011D	PageName	The name of the page from which this image was scanned.
286	011E	XPosition	X position of the image.
287	011F	YPosition	Y position of the image.
292	0124	T4Options	Options for Group 3 Fax compression
293	0125	T6Options	Options for Group 4 Fax compression
297	0129	PageNumber	The page number of the page from which this image was scanned.
301	012D	TransferFunction	Describes a transfer function for the image in tabular style.
317	013D	Predictor	A mathematical operator that is applied to the image data before an encoding scheme is applied.
318	013E	WhitePoint	The chromaticity of the white point of the image.
319	013F	PrimaryChromaticities	The chromaticities of the primaries of the image.
321	0141	HalftoneHints	Conveys to the halftone function the range of gray levels within a colorimetrically-specified image that should retain tonal detail.
322	0142	TileWidth	The tile width in pixels. This is the number of columns in each tile.
323	0143	TileLength	The tile length (height) in pixels. This is the number of rows in each tile.
324	0144	TileOffsets	For each tile, the byte offset of that tile, as compressed and stored on disk.
325	0145	TileByteCounts	For each tile, the number of (compressed) bytes in that tile.
326	0146	BadFaxLines	Used in the TIFF-F standard, denotes the number of 'bad' scan lines encountered by the facsimile device.
327	0147	CleanFaxData	Used in the TIFF-F standard, indicates if 'bad' lines encountered during reception are stored in the data, or if 'bad' lines have been replaced by the receiver.
328	0148	ConsecutiveBadFaxLines	Used in the TIFF-F standard, denotes the maximum number of consecutive 'bad' scanlines received.
330	014A	SubIFDs	Offset to child IFDs.
332	014C	InkSet	The set of inks used in a separated (PhotometricInterpretation=5) image.
333	014D	InkNames	The name of each ink used in a separated image.
334	014E	NumberOfInks	The number of inks.
336	0150	DotRange	The component values that correspond to a 0% dot and 100% dot.
337	0151	TargetPrinter	A description of the printing environment for which this separation is intended.
339	0153	SampleFormat	Specifies how to interpret each data sample in a pixel.
340	0154	SMinSampleValue	Specifies the minimum sample value.
341	0155	SMaxSampleValue	Specifies the maximum sample value.
342	0156	TransferRange	Expands the range of the TransferFunction.
343	0157	ClipPath	Mirrors the essentials of PostScript's path creation functionality.
344	0158	XClipPathUnits	The number of units that span the width of the image, in terms of integer ClipPath coordinates.
345	0159	YClipPathUnits	The number of units that span the height of the image, in terms of integer ClipPath coordinates.
346	015A	Indexed	Aims to broaden the support for indexed images to include support for any color space.
347	015B	JPEGTables	JPEG quantization and/or Huffman tables.
351	015F	OPIProxy	OPI-related.
400	0190	GlobalParametersIFD	Used in the TIFF-FX standard to point to an IFD containing tags that are globally applicable to the complete TIFF file.
401	0191	ProfileType	Used in the TIFF-FX standard, denotes the type of data stored in this file or IFD.
402	0192	FaxProfile	Used in the TIFF-FX standard, denotes the 'profile' that applies to this file.
403	0193	CodingMethods	Used in the TIFF-FX standard, indicates which coding methods are used in the file.
404	0194	VersionYear	Used in the TIFF-FX standard, denotes the year of the standard specified by the FaxProfile field.
405	0195	ModeNumber	Used in the TIFF-FX standard, denotes the mode of the standard specified by the FaxProfile field.
433	01B1	Decode	Used in the TIFF-F and TIFF-FX standards, holds information about the ITULAB (PhotometricInterpretation = 10) encoding.
434	01B2	DefaultImageColor	Defined in the Mixed Raster Content part of RFC 2301, is the default color needed in areas where no image is available.
512	0200	JPEGProc	Old-style JPEG compression field. TechNote2 invalidates this part of the specification.
513	0201	JPEGInterchangeFormat	Old-style JPEG compression field. TechNote2 invalidates this part of the specification.
514	0202	JPEGInterchangeFormatLength	Old-style JPEG compression field. TechNote2 invalidates this part of the specification.
515	0203	JPEGRestartInterval	Old-style JPEG compression field. TechNote2 invalidates this part of the specification.
517	0205	JPEGLosslessPredictors	Old-style JPEG compression field. TechNote2 invalidates this part of the specification.
518	0206	JPEGPointTransforms	Old-style JPEG compression field. TechNote2 invalidates this part of the specification.
519	0207	JPEGQTables	Old-style JPEG compression field. TechNote2 invalidates this part of the specification.
520	0208	JPEGDCTables	Old-style JPEG compression field. TechNote2 invalidates this part of the specification.
521	0209	JPEGACTables	Old-style JPEG compression field. TechNote2 invalidates this part of the specification.
529	0211	YCbCrCoefficients	The transformation from RGB to YCbCr image data.
530	0212	YCbCrSubSampling	Specifies the subsampling factors used for the chrominance components of a YCbCr image.
531	0213	YCbCrPositioning	Specifies the positioning of subsampled chrominance components relative to luminance samples.
532	0214	ReferenceBlackWhite	Specifies a pair of headroom and footroom image data values (codes) for each pixel component.
559	022F	StripRowCounts	Defined in the Mixed Raster Content part of RFC 2301, used to replace RowsPerStrip for IFDs with variable-sized strips.
700	02BC	XMP	XML packet containing XMP metadata
32781	800D	ImageID	OPI-related.
34732	87AC	ImageLayer	Defined in the Mixed Raster Content part of RFC 2301, used to denote the particular function of this Image in the mixed raster scheme.

GPS Related EXIF tags

Code	Hex	Name	Description
0	0000	GPSVersion
1	0001	GPSLatitudeRef
3	0003	GPSLongitudeRef
5	0005	GPSAltitudeRef
6	0006	GPSAltitude
8	0008	GPSSatellites
9	0009	GPSStatus
10	000A	GPSMeasureMode	GPS Measurement Mode
11	000B	GPSDOP	GPS Degree of Precision
12	000C	GPSSpeedRef
13	000D	GPSSpeed
14	000E	GPSTrackRef
15	000F	GPSTrack
16	0010	GPSImgDirectionRef	PS Image Direction Ref
17	0011	GPSImgDirection	GPS Image Direction
18	0012	GPSMapDatum
19	0013	GPSDestLatitudeRef	GPS Destination Latitude Ref
23	0017	GPSDestBearingRef	GPS Destination Bearing Ref
24	0018	GPSDestBearing	GPS Destination Bearing
25	0019	GPSDestDistanceRef	GPS Destination Distance Ref
26	001A	GPSDestDistance	GPS Destination Distance
29	001D	GPSDateStamp	GPS Date Stamp
30	001E	GPSDifferential	GPS Differential

Please refer to EXIF.org for more information