Thoughts on restricted distribution documents (Dec Professional 350)

Eric Smith spacewar at
Wed Sep 30 16:44:28 CDT 2020

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

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