PDF Collaboration Library for iOS
PSPDFKit Instant is our prebuilt solution for synchronizing annotations across multiple concurrent users, devices, or sessions. It offers developers a self-hosted solution that handles document viewing on any platform, data management, conflict resolution, version tracking, diffing, and merging. It’s a licensable component that’s included as part of PSPDFKit Server.
PSPDFKit SDKs are deployed in some of the world’s most popular applications, such as those made by Autodesk, Disney, DocuSign, Dropbox, IBM, and Lufthansa.
Real time — Sync edits and annotations to a server or across devices
Self-hosted — Maintain complete control over your data
Device agnostic — Consistent UX across web, mobile, and desktop clients
Conflict resolution — Handle simultaneous concurrent edits
Secure authentication — Easy integration with existing systems
Data management — Separate layer for annotation and form data
User permissions — Fine-grained control over what users can see or edit
Guides for Instant Synchronization
Get Started with PSPDFKit Instant
How to get started with PSPDFKit Instant
Learn how authentication works
Learn about the Instant API and how to use it for displaying documents
How to configure annotation synchronization to PSPDFKit Server
Learn about Instant layers and how they can be used
How to view, add, and delete comments in PDF documents
Learn how Instant works with offline devices or unstable connections
Learn how a document transitions to different states over its lifecycle
How to configure the data protection level for iOS data protection
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