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Acrobat Reader for DOS under emulators and PDF1 conversion (Users)

posted by bocke, 10.02.2024, 07:35
(edited by bocke on 10.02.2024, 07:57)

> About the second topic: PDF 1.0 conversion, I'm also interested in that.
> But haven't found any software that's able to convert newer PDF formats to
> it or that is able ot genearte PDF 1.0.

Exploring a history of Ghostscript for DOS, I found out I mostly have the binaries from FreeDOS repo. The first one of those to support PDF was 4.03. I tried 4.03 and 5.10, attempting something.

I tried converting modern PDF to PS with a current PDF2PS script. That didn't work as every generated PS featured some PS instructions these old Ghostscripts couldn't interpret.

A also tried converting a modern PDF to PS with the old versions of PDF2PS that came with those releases, but it couldn't really read them.

Anyway, I think these old versions might be able to generate PDF 1.0. The problem is, how to use this from the modern system? How to convert a well formed modern PDF file to use only the features of PDF 1.0 or how to convert PDF to a Postscript format that only include older versions of Postscript language?

This might not be the problem if you use an older program for DOS to generate PS and then try to convert it to PDF. I know some later word processor had support for generating PS (or printing to PS printers). Also some text editors have support for PS. I would guess there should also be some DTP programs or image editing programs.

But if you want to convert your favorite modern E-book to PDF 1.0, that, for now, is not possible.

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