https://github.com/Stirling-Tools/Stirling-PDF

I put one in at work. It sat idle for a while until a member of my admin staff asked me how to do a job involving pay slips. We discovered the pipeline tool in Stirling. It is now a permanent system with an SLA!

Each tool has a nice big icon or you can create desktop or browser shortcuts to the ones of interest - ideal for keeping it simple.

I’d suggest Stirling PDF, just get the Stirling-PDF.jar file from the releases. It does really lots of stuff (though I had some issues with creating pdfs with multiple pages per page). It open a port for the service to run locally and once you close it, it also closes the port.

I also use libre office draw (or firefox printing menu) to create pdfs with multiple pages per page.

There’s also xournal as some other people have mention that has some editing capabilities.

https://invent.kde.org/graphics/okular

I like Okular’s ability to scan and convert tabled data in PDFs too. There is an option to turn off DRM nonsense. That can do page edits and stuff. If you want to create pages with images you need an office suite.

Xournal++ works pretty good in my experience

As other have said, a combination of Firefox PDF tool, PDF Arranger and Xournal++ is all I’ve ever needed. And Okular is nowadays my viewer of choice, which does a lot on its own, too.

The options are surprisingly poor.

Personally, I rolled my own TUI script. It uses pdftk to explode and merge, and gs (Ghostscript) to optimize. To paste PNGs of my signature (absurd, but here we are) I use xournal, which looks a bit rough but gets the job done.

For Editing you can use libre office draw or stirling pdf in a docker container. For Formulars and other stuff sounds can use okular.

This one has a perpetual license option, which could be steep for personal use but could be fine for a business. PDFsam Visual is great for what it does. You can also try it for 14 days too and then decide if it’s useful for you or not.

OnlyOffice is the best I think…

I like to add xournal++ for editing PDF without a functional form field. And as other said already: PDF Ranger and Firefox itself

When Python coders create documentation popular options: Sphinx and mkdocs. pandocs for converting a lone vanilla ReStructuredText file.

With Sphinx can create user manual and PDF!

Let me politely add a big warning, there is a learning curve

Any user level questions regarding Sphinx can send my way

pdfjam is the only tool i found that resizes images of different sizes to letter size while combining. Though it’s cli only. If your file manager has something similiar to Thunars custom actions, you could create little scripts to split, merge, image-to-pdf and put them in the context menu this way.