Protect PDF
Add AES-256 password protection to PDF files to prevent unauthorized access. Secure confidential documents with industry-standard encryption. SnapOtter encrypts locally so your files never pass through external servers.
Features
- AES-256 encryption for strong document security
- Set an open password required to view the document
- Industry-standard PDF encryption compatible with all major readers
- Preserves all document content, formatting, and metadata
- Self-hosted encryption keeps unprotected originals off external servers
What you can do
- Protecting a financial statement PDF before emailing it to a client
- Encrypting employee records PDFs for secure internal distribution
- Adding a password to a legal contract PDF before sharing with opposing counsel
- Securing medical report PDFs to comply with patient privacy regulations
Self-hosted. Your files never leave your network.
SnapOtter runs entirely on your own infrastructure. Files processed with Protect PDF are never uploaded to third-party servers. Deploy a single Docker container and process files with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.
Frequently asked questions
- What encryption standard is used?
- SnapOtter uses AES-256, which is the strongest encryption available for PDF files. It is supported by all major PDF readers. Encryption runs entirely on your local server.
- Can I set separate open and edit passwords?
- You can set a password required to open and view the document. This provides strong protection against unauthorized access. All processing happens on your self-hosted instance.
- Is the encryption secure enough for compliance?
- AES-256 meets the requirements of most compliance frameworks including HIPAA and GDPR. Combined with SnapOtter's local-only processing, your documents never leave your controlled environment.
More Security tools
Ready to try Protect PDF?
Deploy SnapOtter in under a minute. All 157 tools included. Open source and free forever.