This .NET library enables developers to integrate legally-binding e-signatures into their apps. Key features include online signature capture, document preparation/sending, and signature authenticity verification.

One of the standout features of this software is the Electronic Signature Capture Control. This control provides users with a range of options to sign documents, including uploading a scanned copy of a signature, typing a signature with custom font styles, or drawing a signature with a mouse, touch or stylus. The software also allows for handwritten signatures to be drawn and applied to documents directly in a web-browser.
Another important feature of GroupDocs.Signature for .NET is its ability to support multiple document formats. While all documents are signed in PDF format for security reasons, the library can also convert over 50+ file formats to PDF so that users can get them e-signed as well. Among the supported file formats are Microsoft Word, Excel, PowerPoint, Visio, OpenDocument, RTF, CSV, TXT, AutoCAD, and many more.
The software also provides comprehensive anti-tampering and audit-trail functionality to ensure document integrity and guarantee signature authenticity. This allows developers to build legally-binding electronic signature solutions that comply with the U.S. Federal ESIGN Act and UETA Act.
Other features include Merge Fields Handling, Easy-to-Follow Signature Workflows, and integration into any .NET project, including ASP.NET and console/desktop applications. With GroupDocs.Signature for .NET, developers can store templates for reuse, organize/archive signed documents, save recipient contacts, send email notifications, and reminders.
If you're interested in testing the software for yourself, GroupDocs offers a 30-day fully-functional trial. Contact GroupDocs sales to get started today. Overall, GroupDocs.Signature for .NET is an excellent software library that can greatly enhance the electronic signature functionality of any software application.
Version 1.9.0:
- Implemented a capability of verifying unique reference IDs applied to signed documents
- Numerous minor updates and bug fixes