Get Started
play_arrowLearn more
play_arrowCommon use cases
play_arrowOpen a document
play_arrowSave a document
play_arrowViewer
play_arrowUI Customization
play_arrowAnnotations
play_arrowCollaboration
play_arrowForms
play_arrowSignature
play_arrowSearching
play_arrowMeasurement
play_arrowCompare
play_arrowAdvanced Capabilities
play_arrowPDF.js Express REST API
play_arrowMigration Guides
play_arrowThe following features are available in:
PDF.js Express Viewer
PDF.js Express Viewer is a free viewer with limited capabilities compared to PDF.js Express Plus
PDF.js Express Plus
PDF.js Express Plus is a commercial PDF SDK for viewing, 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
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