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PDF.js Express Free Viewerplay_arrow

Professional PDF.js Viewing - Free

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Professional PDF.js Viewing & Annotations - Try for free

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Learn more

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Common use cases

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Open a document

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Save a document

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Viewer

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UI Customization

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Annotations

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Collaboration

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Forms

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Signature

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Measurement

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Compare

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Advanced Capabilities

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PDF.js Express REST API

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Migration Guides

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PDF.js Express API Utility SDK

The following features are available in:

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PDF.js Express Viewer

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PDF.js Express Viewer is a free viewer that has limited capabilities compared to PDF.js Express Pro

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PDF.js Express Plus

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PDF.js Express Plus is a paid product that supports annotating, signing, form filling and more

We provide an isomorphic (works on server and client) utility package to help use the PDF.js Express API. This package manages authentication, license keys, file uploads, etc.

The package is open source and the source can be found here

This is the recommended way to use the REST APIs. It is fully tested and works both on the server and client.

Get the utility package