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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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APIs for document operations

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 with limited capabilities compared to PDF.js Express Plus

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PDF.js Express Plus

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PDF.js Express Plus is a commercial PDF SDK for viewing, annotating, signing, form filling and more

Save a document as blob
Get the contents of the document as a blob.

Extract annotations from an existing document
Take a users existing document and get the annotations from it in XFDF format

Extract user annotations (XFDF)
Export the annotations a user has created as XFDF. Commonly used to save annotations in a database.

PDF.js Express Web Viewer API
PDF.js Express is a commercial PDF web viewer that wraps around the PDF.js open-source rendering engine.

Save a document as blob
Get the contents of the document as a blob.

Extract annotations from an existing document
Take a users existing document and get the annotations from it in XFDF format

Extract user annotations (XFDF)
Export the annotations a user has created as XFDF. Commonly used to save annotations in a database.

PDF.js Express Web Viewer API
PDF.js Express is a commercial PDF web viewer that wraps around the PDF.js open-source rendering engine.