Trusted Signatures
Seal PDFs with cryptographic trust. Stop invoice fraud. Prove authenticity
Paid
Description
Most document fraud is simple: someone edits a PDF after it leaves your system. Trusted Signatures prevents that by sealing each file with a cryptographic signature and an optional TSA timestamp. If the file changes—even by one pixel—the seal breaks and verification fails. How it works. Your system generates a PDF and sends it to our CLI, API, or Zap.…
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Trusted Signatures FAQ
What is Trusted Signatures?
Most document fraud is simple: someone edits a PDF after it leaves your system. Trusted Signatures prevents that by sealing each file with a cryptographic signature and an optional TSA timestamp. If the file changes—even by one pixel—the seal breaks and verification fails. How it works. Your system generates a PDF and sends it to our CLI, API, or Zap.
Is Trusted Signatures free?
No. Trusted Signatures is a paid app.
Do I need to download Trusted Signatures?
No. Trusted Signatures runs in your browser at trusted-signatures.com, so there's nothing to install.
What are the best Trusted Signatures alternatives?
Popular alternatives to Trusted Signatures include ReSocks, LarkSim and Nucypher. See all Trusted Signatures alternatives