PDFWalker is a GTK frontend to explore the internals of a PDF document with Origami

Sign PDF documents

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This RubyGem is intended to be used with Adobe XFA/Acroform PDFs and relies heavily on both Nokogiri and Origami. It returns an XML object, that can be used throughout your application.

This is gem built on Origami gem to support PDF scan in web applications. You can scan your PDF file for various malicious threats.