There's https://help.libreoffice.org/7.1/en-US/text/shared/guide/start_parameters.html as help for starting LO from command line.
But bugs shows it should be improved, example bug 63324 and bug 132558.
All info from https://stackoverflow.com/questions/30349542/command-libreoffice-headless-convert-to-pdf-test-docx-outdir-pdf-is-not should be addded.
(In reply to Timur from comment #0)
> All info from
> convert-to-pdf-test-docx-outdir-pdf-is-not should be addded.
... even that is wrong, like "your --convert-to pdf is not sufficient. It needs to be: --convert-to pdf:writer_pdf_Export"? ;-P
Actually, it would be nice to discuss some patch in gerrit: what should be added, and what needs to be changed...
Ok, even I wrote "all from page" I didn't mean discussion but parameters.
What I think needs be added is See Also bug.
I don't know why this wasn't confirmed, spoiling stats, I'll do it myself.