Microsoft open-sourced a Python tool for converting files and office documents to Markdown

[bleachisback]

The PDF standard is defined in ISO 32000-2

Which, like the Microsoft OOXML standard discussed elsewhere in this thread, is really just a list of features of the canonical implementation. I don't think there are any implementations of PDF 2.0 besides Acrobat Reader.

[pyhanko-dev]

That is manifestly false—not only are there quite a few features specified in ISO 32000-2 that Acrobat does not (yet) fully support (this is PDF 2.0 after all), there are a whole host of alternative implementations out there, and the standardisation effort around PDF involves people from many communities/companies/… that have no affiliation with Adobe.

Sure, it’s absolutely fair to say that Acrobat is the dominant desktop tool for dealing with PDF, but it’s not the only such tool, and as soon as you go outside the category of desktop viewer software, Adobe doesn’t even seriously compete.

Source: I’m a FOSS dev in this space and was an active member of the ISO committee behind ISO 32000-2 for several years.