Appendices

Exif Data in Piexifjs

Each exif tag has appropriate type of the value. BYTE, ASCII, SHORT, or… See the document of Exif. http://www.cipa.jp/std/documents/e/DC-008-2012_E.pdf

Exif Type	JavaScript
BYTE	int
ASCII	string
SHORT	int
LONG	int
RATIONAL	[int, int]
UNDEFINED	string
SRATIONAL	[int, int]

If value type is number(BYTE, SHORT, LONG, RATIONAL, or SRATIONAL) and value count is two or more number, it is expressed with Array.

BYTE, SHORT, LONG	[int, int, …]
RATIONAL, SRATIONAL	[[int, int], [int, int], …]

Note

If value type is number and value count is one, array that is length one value(e.g. [int]) also be accepted.