Thoughts on restricted distribution documents (Dec Professional 350)

[Eric Smith]

On Tue, Sep 29, 2020 at 6:11 PM Paul Koning via cctalk <
cctalk at classiccmp.org> wrote:

> TIFF compression is lossless.
>

TIFF is only a container format ("Tagged Image File Format"). TIFF does not
define any one compression. It in fact can contain either lossy or lossless
compression, or even uncompressed images.

For black-and-white documents (text and line art, no grey scale), it used
to be somewhat common to use TIFF Class F Group 3 or Group 4 fax format,
which is lossless, but TIFF can also contain DCT-compressed images
(equivalent to JPEG).