By Team Hypomnema · Privacy & security
Encrypt or unlock a file locally with password-based AES-GCM.
Use the guide alongside the working tool.
Open File Encryption →Worked example
Encrypt a small file, then decrypt the .omni file with the same password to recover its original bytes.Encrypt or unlock a file locally with password-based AES-GCM.
Prepare your input
Choose Encrypt or Decrypt and open a file up to 20 MB.
Enter a strong password; keep it somewhere safe.
Review and export
Download the authenticated encrypted package or recovered original bytes.
Encrypt a small file, then decrypt the .omni file with the same password to recover its original bytes.
Scope and privacy
AES-256-GCM, PBKDF2-SHA256 with 600,000 iterations, random salt and nonce. No password recovery. Close the tab to release session references.
Inputs are processed in this browser. Nothing is uploaded by this tool. Save an export or draft before closing the tab if you need to retain your work.
Ready to apply this workflow?
Try File Encryption →Explore a related workflow
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Keep your original files and review the result. Found unclear instructions? Contact Team Hypomnema.