[yboris]

Semi-related(?) - I created a repository to convert PDF to JPG and back to PDF:

https://github.com/whyboris/PDF-to-JPG-to-PDF

A government form didn't have editable fields that needed to be filled out. And editing the PDF was impossible (password protection). This was my solution.

[kccqzy]

On macOS using Preview you can add textual comments on otherwise uneditable PDFs. Then you can simply print the commented PDF as a new PDF.

Converting to JPG unnecessarily rasterizes text and introduces ugly compression artefacts.