Choose one local PDF on your Mac
In Finder, choose Mark on Samsung Tab from the TabShare actions. Paper Roundtrip starts with one file stored on this Mac so TabShare can remember where it belongs.
Paper Roundtrip guide
Send a PDF from Finder, mark it up with S Pen, and return the finished copy beside the original without putting the file through a cloud drive.
The short answer
TabShare keeps the original Mac file in place, sends a working copy to the paired Galaxy Tab, and remembers enough context to place the exported result safely when it comes back.
In Finder, choose Mark on Samsung Tab from the TabShare actions. Paper Roundtrip starts with one file stored on this Mac so TabShare can remember where it belongs.
Your Galaxy Tab shows the PDF as Ready to mark. Open it from TabShare in Samsung Notes or another PDF app so the return stays connected to this roundtrip.
Make the changes in your chosen PDF app. The app owns the handwriting and edits; TabShare leaves the PDF contents alone.
Use the PDF app's Share or Export action and choose TabShare. Export a PDF rather than dragging or sharing a private Samsung Notes note card.
When the original folder is still available and the match is certain, TabShare saves a new marked copy beside the original. Otherwise it keeps the return safe and places it in Needs Review.
Before you begin
Paper Roundtrip is deliberately narrow: one Mac-owned document, one paired Galaxy Tab, and one ordinary PDF your tablet app can share back.
The starting PDF must be stored on this Mac so TabShare can remember the folder it came from.
Pair once with Private Link so the document returns through the same trusted device relationship.
Samsung Notes and other PDF apps can work when they expose the finished document as an ordinary PDF.
A clear division of work
TabShare does not read Samsung Notes private storage or alter your annotations. It works with the ordinary PDF that your chosen app makes available through Share or Export.
Keeps the Mac starting point, delivers the PDF, and handles the returned file.
Creates the handwriting, highlights, comments, and exported result.
Places the returned copy beside the original, or asks you to review when the destination is uncertain.
A safe return
A healthy return creates a new collision-safe file such as design-review - marked.pdf beside the Mac original. TabShare never replaces the source PDF as part of Paper Roundtrip.
A current, confidently matched roundtrip returns automatically when the original folder is still writable.
If the folder is unavailable or the match is uncertain, the returned PDF stays safe until you choose where it belongs.
Sharing the marked PDF again creates another collision-safe copy instead of overwriting the original or an earlier return.
When something changed
Your Mac may have restarted, the original may have moved, or its folder may no longer be writable. TabShare keeps the received PDF in its Returned folder and surfaces Needs Review so you can open the copy, place it beside the original, or decide later.
The Mac keeps the original in place and reports that the send could not begin; no roundtrip is silently completed.
The return is preserved for review instead of being placed by guesswork.
Return matching is designed for the ordinary exported document; use your app's PDF export when you want a marked PDF back.
Why use a roundtrip
A cloud drive is a good fit when you already keep an entire folder synchronized, and a general sender is enough for a one-off delivery. Paper Roundtrip is for the moment when one Mac document needs the Galaxy Tab and S Pen, then needs to return to the same piece of work without replacing the original.
Good to know
No. Your Galaxy Tab PDF app creates the annotations. TabShare moves the resulting file without changing its contents.
No. Samsung Notes support uses the normal Share or Export action for PDF, image, or text.
No. A verified return creates a new collision-safe marked copy. The original Mac file remains untouched.
Yes. The app needs to open the received PDF and make the finished document available through Android Share or Export as an ordinary PDF.
The Mac keeps the returned file safe in its Returned folder and shows Needs Review instead of guessing where to place it.
TabShare