PDF Signature Library
Sign PDFs and add encryption
The Pdftools SDK makes adding signatures to PDFs easy. The SDK supports various types including approval, certification, and time-stamping. It offers robust validation tools, and allows customizable visual appearances. The encryption feature caters to diverse document security needs.
👇 Start Building with the free PDF SDK Experience Edition (in under 60 seconds)
Also available via Nuget (.NET) and Maven (Java) package managers
Review code samples for encrypting and signing
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