Multiple PDF File Formats?

[MarjaE]

Has anyone found an adequate way for Calibre to handle multiple pdf file formats, or pdf file testing?

I get that pdf is a crappy format, but it is still the standard format for articles and games.

I can't use newer e-readers or tablets with my disabilities. I use an old Kindle Dx for pdfs, and have to pre-process pdfs using either Willus's k2pdfopt for scanned pdfs or Ghostscript with compatibility level 1.4 and various compression options for pdf-born-pdfs. Occasionally Ghostscript fails, losing text info or other important info, so I need to run it through another filter first before running it through Ghostscript. Files proliferate, and I need a column just to keep track of which pdfs used which processing options.

Trying to process, test, import, and type up the metadata for pdfs is even more work than for other file formats.

Is there something I'm missing that would simplify this?

[MarjaE]

P.S. I copy and past the metadata from one format to the others, correcting #status (which I use to control export, and to tag incompatible files) and #processing afterwards.

Using appropriate tweaks to control what gets copied and pasted helps.

But still, so many files...