Encrypt Files in Your Browser
Encrypt and decrypt files locally with AES-256-GCM authenticated encryption and password-based key derivation. Security depends heavily on using a strong, unique password and safeguarding the encrypted files.
Start Encrypting NowClient-Side File Encryptor
Drop Files to Encrypt
Selected files are processed locally by this tool and are not uploaded
Password Protection
Password Key Derivation
More rounds increase password-guessing cost but also increase processing time. A strong, unique password remains essential.
To decrypt, enter the password and click "Decrypt .tce Files" to select a file. If a .tce file is already in the queue above, the tool will reuse it instead of asking again.
Why Use Our File Encryptor
How It Works
Frequently Asked Questions
The tool uses AES-256-GCM authenticated encryption and PBKDF2-SHA-256 with a selectable round count. These are established browser cryptography primitives, but protection still depends on password strength, device security and correct implementation. No cracking-time guarantee is possible.
The selected files and password are handled locally by this tool and are not uploaded to ToolCookie. The page itself may load external resources such as Google Fonts, and browser extensions or a compromised device could still access page activity.
ToolCookie .tce files can be decrypted with this tool in a compatible browser using the correct password. The updated tool also retains support for the earlier .tce format, although legacy metadata was not authenticated.
ToolCookie does not store the password or provide password recovery. Without the correct password, the tool cannot decrypt the file. Keep a secure backup of both the password and the encrypted file.