Pixmap TIFF
You have found the way to TIFF on Pixmap:
LibTiff - Library for reading and writing TIFF images, and some tools for doing simple manipulations on them.
Adobe TIFF Resources page - Adobe linking to the specification, specification supplements, and some other main TIFF resources.
DNG Specification - Describes a non-proprietary, TIFF based file format for storing camera raw files. [PDF]
GeoTIFF - Home of a TIFF file format based interchange format for georeferenced raster imagery.
RFC 2301 - File format for internet fax.
TechNote2 on JPEG-in-TIFF - This TechNote overrides part of the TIFF 6.0 specification.
TIFF and LibTiff Mailing List Archive - Contains most of over 10 years of TIFF mailing list activity, and supports archive search.
TIFF and LibTiff Mailing List Subscription - For discussion of the TIFF format, and use of the LibTiff library by software developers.
TIFF File Format FAQ - Frequently asked questions about the TIFF file format.
TIFF Revision 6.0 - TIFF file format specification, June 3, 1992 from Adobe Developers Association. [PDF]
TIFF Revision 4 Info - Documentation about revision 4 of TIFF.
TIFF Revision 5 Info - Documentation about revision 5 of TIFF.
TIFF Revision 6.0, Supplement 1 - TIFF file format specification, supplement (TIFF trees, ICC L*a*b*, and other topics). [PDF]
TIFF Revision 6.0, Supplement 2 - TIFF file format specification, supplement (Deflate and JPEG compression, CIE L*a*b*, and other topics). [PDF]
TIFF Tags - Directory of known TIFF Tags with properties, short description, and links to more information. You can also submit information about your own private tags here. Help build the largest human-edited directory on the web.