The TIFF file has 64-bit offsets (instead of 32) allowing for bigger size images.
A BigTIFF file can be simulated by manipulating its header. Open the TIFF file with an Hexadecimal Editor (e.g. HxD)
- Change the bytes 2-3 to the decimal value 43 (
2B
in hexadecimal). - Note that if the first two bytes of the TIFF file have the value
4D4D
it means little endian, therefore 43 is002B
, and if the two first bytes are4949
it means big endian and therefore 43 is2B00
.
BigTIFF files may be generated with editors that are able to write in this format.