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WebViewer has a built in signature tool that lets users create signature annotations. In fact, signature annotations are just freehand annotations, or ink annotations according to the PDF specification. With WebViewer, it is possible to preview signatures, save signatures and apply default signatures directly.

Digital signatures are also supported in WebViewer, meaning that you can digitally sign and certify a PDF document. You can view the digital signature sample here.

One difference between digital signatures and signature annotations is that digital signatures employ asymmetric cryptography and provide an extra layer of security whereas signature annotations are just created physically and can be moved around in the document. In this guide we are discussing signature annotations, not digital signatures.

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