Document with multiple Instant comments

Instant PDF Comments Start a Discussion with Real-Time Collaboration

Collaboration means discussion, and Instant Comments is the easiest way to discuss PDF documents in real time.

Available On:
Mac Catalyst
How It Works

Instant + Comments

Built on top of our PSPDFKit Instant technology stack, Instant Comments is the drop-in solution for adding real-time document discussions to PSPDFKit for Mac Catalyst.

Key Benefits

Real-Time Document Discussions

Quick and Conflict-Free

Only updates to comments are propagated to devices, and conflicts are resolved server-side.

Real-Time Collaboration

Easy-to-follow linear comment threads that are updated in real time.

Works Offline

Updates are saved locally and uploaded the next time the device is online.


An Instant Back-and-Forth

Faster and simpler collaboration workflows are what PSPDFKit Instant was created for, and Instant Comments is the ideal tool for document-centric communication.

Freely Placed Comments

Give your users the ability to place a comment anywhere on the page or attached to a text highlight annotation.

A Friendly UI

Instant Comments uses an easy-to-follow thread view with a familiar styling.

Excellent Compatibility

Instant comments are stored as PDF replies on export. This means that any PDF reader that supports annotation replies will also be able to show Instant Comments.


What You Need

PSPDFKit Server

PSPDFKit Instant deploys within your existing infrastructure — you retain complete control over your data.

PSPDFKit Instant

Using industry-standard JWTs allows for easy integration with your existing authentication system.

A Docker Environment

Sync document edits, text highlights, and annotations across iOS, Android, and web devices in real time.


Which One Is for You?

PSPDFKit for Mac Catalyst supports both standard replies and real-time collaboration commenting.

Part of the PDF standard and supported by most PDF viewers
Used in linear workflows, with the document being forwarded from one user to the next
Support for per-comment review states
Does not require a server
Used In
  • Linear review workflows
  • Simple document approval workflows
  • 1-on-1 environments
PSPDFKit-only feature
Used for quickly spawning discussions across documents with many collaborators
Changes are synced in real time, allowing quick turnaround
Documents are stored on the server, and only changes are propagated
Used In
  • Discussion-heavy review workflows
  • Team environments
  • Combination with other Instant components
  • Ideal for large documents
Documentation Learn how to easily get Instant Comments up and running in your project.
View Documentation

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