Adobe Systems , which acquired Aldus , now holds the copyright to the TIFF specification . TIFF has not had a major update since 1992 , though several Aldus\/Adobe technical notes have been published with minor extensions to the format , and several specifications , including TIFF\/EP , have been based on the TIFF 6.0 specification .
Adobe holds the copyright on the TIFF specification ( aka TIFF 6.0 ) along with the two supplements that have been published .