How to use this tool
Choose the JSON container generated by Local File Password Encryption, enter its passphrase, then decrypt and download the original bytes.
Accuracy and scope
Accepts FeuTex version-1 JSON containers with AES-256-GCM/PBKDF2-SHA256-250000, a 16-byte salt and 12-byte IV. PBKDF2 uses 250,000 SHA-256 iterations. Authentication rejects an incorrect passphrase or modified ciphertext. It cannot open ZIP, Office, PDF or arbitrary encrypted formats. Restore the original filename extension manually.
Is my data uploaded?
This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.