Download nSoftware Secure PDF 2024 v24.0.9546 (24 Feb 2026) .NET Edition + License Key

nSoftware Secure PDF is an easy-to-use library for adding robust PDF security to your apps. It makes it easy for developers to sign, verify, encrypt, and decrypt PDFs without writing complex code. It is compliant with the latest PDF security features, such as Basic Adobe Signatures and the advanced PAdES signature levels.

The library is suitable for companies requiring document security and trust. It integrates with current PKI infrastructure, validates certificates, provides timestamps, CRL, OCSP, and EU Trusted Lists, and maintains the authenticity and validity of PDF documents in the future. It also supports local and remote signing, allowing it to be used for workflows where signing is done on a different system.

nSoftware Secure PDF isn't just about security. You can also create and fill in PDF forms, insert images and graphics, merge/split pages, and manage attachments—even create compliant ZUGFeRD/Factur-X e-invoices. For more basic needs, nSoftware also provides PDF Password, a free command-line-based tool to password-protect PDFs directly from your computer without connecting to the internet.

Key Features of nSoftware Secure PDF:

1. Sign and verify PDF documents.
2. Encrypt and decrypt PDFs with passwords or certificates.
3. Support for Basic Adobe Signatures and PAdES standards.
4. Works with existing PKI systems.
5. Supports timestamps, CRL, OCSP, and EU Trusted Lists.
6. Enables long-term PDF validation and archiving.
7. Supports in-browser and remote signing.
8. Create empty signature fields for later signing.
9. Create and edit fillable PDF forms.
10. Add images, graphics, attachments, and visual elements.
11. Merge, split, and modify PDF pages.
12. Create ZUGFeRD and Factur-X e-invoices.
13. Inspect and edit low-level PDF document structure.
14. Preserves PDF/A compliance where possible.
15. Easy-to-use API for developers.
16. Native components with no external library dependencies.
17. Fast, reliable, and lightweight performance.
18. Includes documentation, samples, help files, and support.

Click on the links below to Download the latest version of nSoftware Secure PDF with License Key!