PdfTools.PdfSecurity (nuget): 3-Heights® PDF Security is a fast and robust API for protecting and signing your PDF documents. It allows you to encrypt and decrypt PDF documents, as well as verifying and adding PDF/A-conform digital signatures. Additionally, it supports adding PDF/A-conform stamps (text, image, vector) while preserving existing signatures.   Ideal for automating your business processes. Suitable for single and bulk document processing.  PDF software by developers for developers   • Monthly feature releases   • No external dependencies   • Comprehensive manual and code samples  Visit our website to get your free evaluation license now.   • Fully functional 30-day trial   • Free support directly from our developers during the evaluation period
Keywords: PDF|PDF/A|conform|sign|certify|encrypt|decrypt|stamp|PAdES|eIDAS|LTV|LTA|revise|PKCS#11|time-stamp|validate|watermark