CCITT Group 4

File Format
Name	CCITT Group 4
Ontology	Electronic File Formats Compression CCITT Group 4
PRONOM	x-cmp/15

CCITT Group 4 is a widely used lossless compression algorithm used for bitonal images. It is frequently used in TIFF images created by scanning bitonal images.

References

• T.6 : Facsimile coding schemes and coding control functions for Group 4 facsimile apparatus
• ITU-T Group 4 FAX Compression (T.6), from Library of Congress resource on Sustainability of Digital Formats