The image file directory for TIFF will contain a selection of the following entries:
File Byte Order: OS defaults to the use of MM = Motorola Byte Order; the order in which the data is interpreted.
Tag 256 (ImageWidth): The number of columns in the image, i.e. the number of pixels per row, for example, value = 4000.
Tag 257 (ImageLength): The number of rows of pixels in the image, for example, value = 4000.
Tag 258 (BitsPerSample): The number of bits per component, for example, value = 8.
Tag 259 (Compression): Compression scheme used on the image data, for example, value = 5 (LZW).
Tag 262 (PhotometricInterpretation): The colour space of the image data, for example, value = 3 (Palette).
Tag 270 (ImageDescription): A string that describes the subject of the image, for example, value = 1:50 000 TILE SU40.
Tag 273 (StripOffsets): For each strip, the byte offset of that strip, for example, first four values = 5640 19678 35692 51409.
Tag 277 (SamplesPerPixel): The number of components per pixel.
Tag 278 (RowsPerStrip): The number of rows in each strip, for example, value = 8.
Tag 279 (StripByteCounts): For each strip, the number of bytes in that strip after compression, for example, first four values = 14038 16014 15717 15442.
Tag 282 (XResolution): The number of pixels per Resolution Unit in the Image Width, for example, value = 254.
Tag 283 (YResolution): The number of pixels per Resolution Unit in the Image Length, for example, value = 100/1.
Tag 284 (PlanarConfiguration): Look-up table, for example, value = first four values = 22873 31354 39321 59110.
Tag 296 (ResolutionUnit): How the components of each pixel are stored.
Tag 306 (DateTime): Date and time of image creation, for example, value = 2007:06:30 12:38:41.
Tag 317 (Predictor): A mathematical operator that is applied to the image data before an encoding scheme is applied.
Tag 320 (ColourMap): Look-up table, for example, value = first four values = 22873 31354 39321 59110.
Tag 339 (SampleFormat): Specifies how to interpret each data sample in a pixel.
Tag 33432 (Copyright): Copyright notice, for example, value = ORDNANCE SURVEY CROWN COPYRIGHT 2019.
The preceding values are relevant to 1:50 000 scale TIFF data with LZW compression.