This task can be performed using PDFSlick Sync
Add real-time collaboration to PDF documents in your app
Best product for this task
PDFSlick Sync
team-tools
A drop-in PDF viewer that brings real-time cursors, comments, and annotations to your app. Turn your PDFs into active workspaces in minutes.

What to expect from an ideal product
- PDFSlick Sync lets multiple users open, comment, and annotate the same PDF simultaneously, with changes appearing live for every participant without any page refresh.
- Real-time cursors show exactly where each collaborator is working inside the document, so teams stop overwriting each other or sending conflicting annotation files back and forth.
- Drop it into your existing app in minutes. PDFSlick Sync is built as a drop-in PDF viewer, so you skip months of custom development and get live collaboration working fast.
- Every comment, highlight, and annotation syncs instantly across all connected users, turning a static PDF into a shared workspace where decisions happen inside the document itself.
- Built for product teams who need to ship PDF collaboration without building infrastructure from scratch. PDFSlick Sync handles the real-time layer so your team focuses on the product.
