Client-Side File Encryptor/Decryptor

Provide absolute privacy for sensitive data by encrypting files locally using bank-grade cryptography.
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Drop a File or Click to Upload

Processes locally inside your browser (maximum privacy)

Secure Client-Side File Encryptor & Decryptor

Protecting sensitive data before sending it over the internet or storing it in the cloud has never been more important. Our Client-Side File Encryptor and Decryptor uses advanced AES-GCM encryption to secure your documents, images, and archives. Simply select your file, choose a strong password, and generate a locked version that only someone with the correct password can open.

Zero-Knowledge Security: The core feature of this tool is its client-side architecture. The encryption and decryption processes happen entirely within the memory of your local browser. Your files, your passwords, and your unencrypted data are never uploaded to any server. This "zero-knowledge" approach means that not even we have access to your data.

Fast and Universal: Built with Web Crypto APIs, the encryption process is blazing fast, even for larger files. The encrypted output can be safely emailed, stored on USB drives, or uploaded to public clouds like Google Drive or Dropbox without fear of interception. To decrypt, simply bring the file back to this page and enter the password.

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Frequently Asked Questions

What encryption standard does this tool use? +
The tool uses AES-GCM (Advanced Encryption Standard with Galois/Counter Mode), which is a military-grade symmetric encryption algorithm. It is highly secure and universally trusted by cybersecurity professionals.
What happens if I lose my password? +
If you lose the exact password used to encrypt the file, the data is permanently unrecoverable. We do not store passwords or backup keys, so please keep your encryption passwords safe in a password manager.
Is it safe to encrypt sensitive tax or medical files here? +
Yes. The encryption process uses the native Web Crypto API. Because the file never leaves your computer and no data is transmitted over the internet, it is completely safe against network interception.