PSPDFKit Instant

Real-time Document Collaboration SDK

With PSPDFKit Instant, it’s easier than ever to add real-time collaboration, efficient synchronization, offline support, and data security to your apps. Instant is made especially for PSPDFKit, and works extremely fast.


What You Get

Self-Hosted icon


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

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Secure Authentication

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

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Real-Time Collaboration

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

A Smarter Sync icon

A Smarter Sync

PSPDFKit Instant only syncs changes, allowing for a smooth experience, even when working with large PDF documents.

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Easy Integration

PSPDFKit Server provides a straightforward JSON-based API to access and update annotations.

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Flexible Deployment

Packaged as a Docker container, PSPDFKit Instant deploys to AWS, Azure, Google Cloud, or your in-house server infrastructure.

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Free 60-Day Trial

Download PDF Collaboration SDK - Instant by PSPDFKit and try it in your app today.



PSPDFKit Instant consists of two parts: the server backend and the client frameworks. The PSPDFKit Server backend manages authentication and synchronizes documents and annotations. The PSPDFKit Instant mobile and web frameworks integrate into your app and communicate with the Server backend.

Instant integration
Instant integration

PSPDFKit Server

The server is delivered in a Docker container and provides a JSON-based API for easy integration with your existing infrastructure. It handles syncing documents and annotations automatically.

PSPDFKit Instant Frameworks

The frameworks for iOS, Android, and web connect your app to PSPDFKit Server. Enabling Instant is a simple matter of adding the framework to your app.

Host on-premises or in the cloud:

Docker Google Cloud Platform Microsoft Azure Amazon Web Services

Supported platforms:

The PSPDFKit Advantage


We want you and your apps to be successful. Our team works hard to ensure development with PSPDFKit is the best experience possible.

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Easy to Set Up

It’s easy to get started with PSPDFKit, which gives you time to focus on making your app great!

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The PDF features you need on every platform — from viewing and annotations to editing across mobile, desktop, and web.

Battle-tested icon


Our products are built to perform and used in some of the most demanding environments.

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Great User Experience

Built with smart, simple design that’s easy to use and navigate, providing the best user experience on the market.

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Ready to go out of the box, but with a rich API enabling customization of every detail.

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Built using the latest and best security practices and trusted by government, military, and medical organizations.

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Fully Documented

PSPDFKit comes with extensive documentation, guide articles, and sample projects.

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Human Support

If you ever need assistance, you get direct access to the engineers who built the product.

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Get In Touch

If you think PDF Collaboration SDK - Instant by PSPDFKit could be for you, our team will help find the best solution for your project.