RFC 3250 (rfc3250) - Page 2 of 7
Tag Image File Format Fax eXtended (TIFF-FX) - image/tiff-fx MIME Sub-type Registration
Alternative Format: Original Text Document
RFC 3250 image/tiff-fx September 2002 3. TIFF-FX Definition TIFF-FX (Tag Image File Format Fax eXtended), is defined in detail by RFC 2301 "File Format for Internet Fax" [TIFF-FX]. While a brief scope and feature description is provided in this section as background information, the reader is directed to the original TIFF-FX specification (File Format for Internet Fax) to obtain complete feature and technical details. 3.1 TIFF-FX Scope This document defines a TIFF-based file format specification for enabling standardized messaging-based fax over the Internet. It specifies the TIFF fields and field values required for compatibility with the existing ITU-T Recommendations for Group 3 black-and-white, grayscale and color facsimile. TIFF has historically been used for handling fax image files in applications such as store-and-forward messaging. Implementations that support this file format specification for import/export may elect to support it as a native format. This document recommends a TIFF file structure that is compatible with low-memory and page-level streaming implementations. Unless otherwise noted, the current TIFF specification [TIFF] and selected TIFF Technical Notes [TTN1, TTN2] are the primary references for describing TIFF and defining TIFF fields. This document is the primary reference for defining TIFF field values for fax applications. 3.2 TIFF-FX Features Some of the features of TIFF-FX are: - TIFF-FX is capable of describing bilevel, grayscale, palette- color, full-color and mixed content image data. - TIFF-FX includes a number of compression schemes that allow developers to choose the best space or time tradeoff for their applications. - TIFF-FX is designed to be extensible and to evolve gracefully as new needs arise. McIntyre, et. al. Standards Track
