[gentoo-user] Re: Scanning double sided documents and printing them the same.

[Grant Edwards <grant.b.edwards@gmail.com>]

On 2020-12-10, Michael <confabulate@kintzios.com> wrote:
> On Thursday, 10 December 2020 08:27:33 GMT Neil Bothwick wrote:
[...]
>> I use gscan2pdf, although it sans to many more file formats. Scan to  2
>> page PDF and your printer can print in duplex.
>> 
>> Gscan2pdf has lots of nice features, I used to use it with an ADF and it
>> would scan all the sheets, then I'd turn the stack over and feed it back
>> in and it would scan the other sides and then put all the pages in the
>> correct order.
>> 
>> I have a duplex scanner now, but that was a real time saver.
>
> Alternatively, on the CLI you could use imagemagick to convert your png, tiff, 
> jpg, etc., to pdf:
>
> convert scan1.png scan1.pdf
> convert scan2.png scan2.pdf
>
> Then join the two pdf documents into one with two pages, using poppler's 
> pdfunite:
>
> pdfunite scan1.pdf scan2.pdf scanned.pdf

There's no need for the two-step process:

$ convert scan1.png scan2.png scanned.pdf

--
Grant