[COFF] converting lousy scans of pdfs into something more useable

[Ralph Corderoy]

> https://decuser.github.io/pdfs/2023/02/01/pdf-cleanup-workflow.html

units(1) can do the sum for you.

    $ units -1 475point in
	    * 6.5972222

Be aware there are several kinds of ‘point’; search
/usr/share/units/definitions.units for /^point to get to the relevant
area.

It will also do your simple ‘echo ... | bc -l’ sums.

    $ units 2560/96
            Definition: 26.666667

GraphicsMagick, gm(1), may be more consistent and future-proof than
ImageMagick.

> I'd really like to get away from needing Photoscape X, though.
> Then I could entirely automate the workflow in bash...

gmic(1) is a very powerful and little known image-processing program.
It may help dump PhotoScape X.

-- 
Cheers, Ralph.