open-pdf-sign

What it does

Open-pdf-sign is a free and open-source tool for digitally signing PDF documents. It's easy to use and allows for customization of visible or invisible signatures. It integrates with Nginx web servers and is available as CLI and NPM package.

Easily sign PDF files from your command line. No special certificates needed, you can just reuse your already existing certificates, e.g. from Let's Encrypt. Cryptographically sign your PDF files in PAdES‑B, PAdES‑T, PAdES‑LT or PAdES‑LTA. This lets your visitors know that PDFs were actually served by your server. Customize the signature to your liking. You can append a visible or invisible signature. Visible signatures can be further customized. open-pdf-sign easily integrates with your existing Nginx web server or can be used in your Node.JS projects For signature you can use e.g. your domain certificate, or any other certificate. In its default settings, the…from openpdfsign.org

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