this post was submitted on 08 Jan 2026
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I will look into these, do you know if they support collaborative annotations?
https://docs.stirlingpdf.com/Functionality/Read-and-Annotate/
Read & Annotate is a full-featured PDF viewer that lets you:
Think of it as your digital PDF notepad - read, review, and mark up documents all in one place.
It says it do. Other than that, I've never deployed it.
I have an installation of Stirling PDF, but in my short experiment it had no ability to collaborate on the same document.
Every edit created a new copy of the document downloaded to the user. The annotations weren't tagged to the individual user and sending different versions of a PDF from user to user is not what I am looking for.
Stirling is a single user software in that regards. I haven't tested the also mentioned BentoPDF but I suspect it to be the same as it is also trying to be a PDF toolbox like Acrobat. PdfDing has a slightly different approach it might be an option if OnlyOffice does not work out.
Hmmmm...sorry to steer you wrongly. I mean, gosh it says it does all annotation and collaboration. I assumed 'collaboration' to mean multi-user collaboration. Hard to collaborate by yourself.
I am thankful for any input. Maybe it helps someone else looking for a similar thing.
I think the collaborative part means sending PDFs from user to user and maintaining the ability to edit annotations. That may work for many use cases - a lot of businesses may be fine with that when email is still the communication medium of choice.