External users editing pdf files

I have sharepoint users accessing the site externally. Is it possible for them to download pdf files , edit them and then save them back up to the Sharepoint site where they got it from? Does version controlling and checkout/checkin work in this scenario as well? If it makes any difference, these users are in AD but externally they must access the site with basic authentication and ssl. Thanks
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Jamie McAllister MVPConnect With a Mentor SharePoint ConsultantCommented:
If they have access to the site then they can edit the PDFs (assuming they have a PDF editor) and the versioning et al works.

No in place editing for PDFs though. They need to checkout, download, edit, checkin.
Yagya ShreeCommented:
Sharepoint does not support editing of PDF files let alone controlling of versioning and content approval.

Its only possible for MS office software and files related to it.

Even if user have PDF editor, you can not have check-in/check-out feature as sharepoint does not have DLL to edit PDF files.
Jamie McAllister MVPSharePoint ConsultantCommented:
As I said, there is no in-place editing of PDFs, however the files can be downloaded, edited, and re-uploaded. Checkin, checkout and versioning will still work for PDFs in this scenario. Versioning, checkin etc work for all file types, not just Office.
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Just out of interest, I am able to check out files directly from Sharepoint 2010 using standard Adobe PDF, at least on my dev farm.  In fact I wish I couldn't as all our PDF files are records and should not be editable, but default behaviour seems to prompt me if I want to check out the document when i click on them.  I have no idea how (or why) this works.
Jamie McAllister MVPSharePoint ConsultantCommented:
We're talking about SharePoint 2010?

Are you aware you can declare your files as records and limit the changes that can be done? This can be done in-place in 2010, whereas a special repository was needed in 2007.

There's heaps of information about that here;

BobHavertyComhAuthor Commented:
I was able to checkout and download and edit right from
Acrobat Pro, and Acrobat Pro XI has a feature that allows you to specifiy web addresses to browse for saving your document back up. Then after I save it to the site and get an overwrite warning, I go back to the site and manually check it back in, and it shows me the new version with the changes, along with the older versions. So that all works OK. But now I'm suddenly getting the following error "The document could not be opened for editing. A Microsoft Sharepoint Foundation compatible application could not be found to edit the document". I'll ask a new questioon about the error. Thanks
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