

Fair enough!
Conversion
First, I haven’t yet encountered a pre-existing document on Linux that didn’t turn into a nice PDF when fed into “Print - Save as PDF”, which I have found to be present by default on Gnome and KDE (the two most popular desktop environments). So for the majority of distros, Print to PDF is pre-installed and available.
For advanced use cases, there’s Pandoc. Pandoc can convert most document formats to many other formats, and gives fine grained control over every step.
Authoring PDFs
For authoring a quick PDF, there’s LibreOffice and OpenOffice.
And of course there’s GnuImp, Krita, and so many more options for editing some images to add in.
Most distros ship with LibreOfffice or OpenOffice, and at least one image editor.
But I do recommend investigating some free and open image editors. There’s many use cases and twice as many options. If the default isn’t for you, what you need may be one (free) Software search away.
But can I just use plain text? (Yes)
For control freaks like me, there’s also a whole ecosystem of tools that work well with Markdown, ASCIIDoc, LaTex, and ReStructuredText.
For the curious, start by trying VSCodium with a Markdown extension.
You can tune your extensions here, but I think I recall “Markdown All-In-One” getting me all the way from raw text to nice enough looking PDFs in one command. Maybe it was two, using the built in “Print to PDF” dialog.
Once again, PanDoc is the powerhouse of this use case, and many excellent tools are available.





I do usually end up asking my team to do this.
The external one is usually Slack or Teams.
I figure it’s worth it for the faster turn around of communication with key clients.
Thankfully, both have web interfaces that work fine on Linux.