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Thank you, it is much needed, right now the most reliable way of generating PDF's I used not so long time ago is - create DOCX with content and some template variable strings, like {{}} - unpack document and get into text, replace text - use DOCX->PDF linux tool to generate document.

Maybe this will be the good solution

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Latex seems way better than either to me (but then, I know Latex). Certainly Latex makes it much easier to get consistency and precision. For your use-case, generate Latex code from a template using Python or whatever, substituting in what you need, then compile the Latex into a PDF. If you need graphical elements or precise layout control, use the Latex package TikZ.

If what you need is very simple (e.g. no word wrapping, same number of variable strings in the same positions), even manipulating the code of a template PDF directly is not too hard. This library would help with that.

> the most reliable way of generating PDFs

See pandoc: https://pandoc.org/

And a variety of intermediate or input text formats, where you can pick your preferred poison whether for book publishing, research papers, math papers, technical documentation, slides, etc.

Including the author's own djot: https://github.com/jgm/djot

EDIT:

Sibling reply suggests latex. OK, but then you're also learning latex.

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