File Encrypt Decrypt Tool – Herramienta en línea gratuita – ToolBox

file encrypt decrypt tool using AES-256-GCM encryption algorithm en línea gratuito con PBKDF2(SHA-256) key derivation to encrypt/decrypt any file locally in the browser. Outputs JSON containing salt/iv/iter/ct for easy saving and transfer, supports downloading encryption results and decrypting to restore original files. Pure frontend processing without data uploads, suitable for backup encryption, sensitive file transfer, and temporary encryption.