You are here: Appendix A: File Formats > Supported TIFF compression types

Supported TIFF compression types

The Job Properties panel provides information about the input images used in a project. Information about any TIFF compression technique used in the input images is also provided, even if the technique is not supported by GeoExpress.

The following table lists TIFF compression types displayed by GeoExpress and whether the compression type is supported by GeoExpress.

Compression Support
CCITT Group 3 fax No
CCITT Group 4 fax No *
LZW (Limpel-Ziv-Welsh) Yes
Old JPEG No
Standard JPEG (including 12-bit) Yes
NeXT run-length encoding No
CCITT run-length encoding Yes **
Pixar image format No
Desktop color separation No
Standard JBIG No
Pack-bits encoding Yes
ThunderScan No
Deflate method (PNG) No

* GeoExpress is able to process single-page Group 4 TIFF files, but encoding this format is not recommended.

** There are many different types of run-length encoding. Some methods are supported; others are not. GeoExpress works best with uncompressed images.