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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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Searching

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Measurement

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PDF.js Express REST API

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Migration Guides

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Searching in PDF.js Express

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

Aside from the built in UI search, PDF.js Express provides progammatic search APIs that can be used to search for text in a PDF.

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Basic searching
If you just need to search and highlight results, our simple search APIs are a great place to start.

Advanced searching
For use cases such as adding annotations to all search results, our advanced search APIs are able to provide all the data you may need.