WebViewer is a JavaScript-based PDF SDK for building document functionality in web apps.

SDK Features

Industry

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Annotations

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Add a stamp annotation
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Create a custom annotation
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Annotation permissions
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Measurement tools
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Calculate area dimensions, measure between lines or trace perimeters in drawings. Upload your PDF, CAD, Image or MS Office file to start measuring.

Measure by

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Enable snapping
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Annotation or Form Flatten