GroupDocs Signature

API for automated document signing

About this software

GroupDocs.Signature is an SDK and API family that adds electronic and digital signature functionality to applications. Available for .NET, Java, Node.js and Python, it supports text, image, barcode, QR-code and certificate-based signatures across more than 60 document and image formats such as PDF, Word, Excel and PowerPoint. APIs include operations to add, search, verify, update, and remove signatures, plus options for signature appearance and document protection.

Licenses & prices

GroupDocs.Signature for .NET

.NET library enabling GroupDocs.Signature integration into .NET applications, supporting document signing and verification.

GroupDocs.Signature for Java

Java library of GroupDocs.Signature enabling electronic signature operations within Java applications and servers.

GroupDocs.Signature Product Family

Product Family bundle includes multiple GroupDocs.Signature platform editions, covering .NET, Java, and SDK variants.

Groupdocs.signature product family

Lowercased Product Family bundle covering GroupDocs.Signature editions across platforms, including SDK, .NET, and Java.

Groupdocs.signature for .net

Alternate-cased .NET library implementing GroupDocs.Signature features for .NET applications, enabling document signing and verification.

Groupdocs.signature for java

Alternate-cased Java library delivering GroupDocs.Signature functions for Java applications, including signing and verification.

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GroupDocs Signature

GroupDocs Signature
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Benefits

  • Multi-format support: Signs PDFs, Office files, images, and other common formats.
  • Multiple signature types: Supports text, image, barcode, QR-code and certificate signatures.
  • Cross-platform SDKs: SDKs are available for .NET, Java, Node.js and Python.
  • Signature verification tools: Search, verify, update, and remove signatures programmatically.
  • Appearance and security controls: Customize signature look and apply digital certificates or protection.

Available languages

  • English

Support information

  • Documentation and examples: Comprehensive documentation, code samples, and API references are available online.
  • Temporary license option: Temporary licenses are available for evaluation to access full functionality during testing.
  • Paid support subscriptions: Commercial paid support and consulting are offered as separate purchase options.
  • Cloud and self-hosting options: APIs are offered as cloud services and as on-premises SDKs for self-hosting.
  • Support portal and knowledge base: A customer support portal and knowledge base are provided for technical guidance.

Frequently asked questions

Which platforms does GroupDocs.Signature support?
GroupDocs.Signature provides SDKs and APIs for .NET, Java, Node.js and Python, and also offers cloud REST APIs for document signing.
What file formats can it sign?
The product supports over 60 formats, including PDF, Word, Excel, PowerPoint, common image types, HTML, and several archive formats.
What signature types are available?
Available signature types include text, image, barcode, QR-code, stamp, metadata-based signatures, and certificate (digital) signatures.
Can existing signatures be found or modified programmatically?
Yes; APIs let developers search for, verify, update, and delete previously added signatures within supported documents.
How does Developer Small Business licensing limit usage?
A Developer Small Business license covers one developer and one deployment location and restricts distribution via public APIs or SDKs.