The App
Clean, intuitive,
Clean, intuitive,
privacy-focused
Drag. Drop. Encrypt. Save. That's it.
Embed encrypted files, documents, and messages into images using advanced steganography. Protected by post-quantum cryptography - secure against both today's hackers and tomorrow's quantum computers.
PDFs, Word docs, spreadsheets
Secret text of any length
Keys, credentials, secrets
Up to 4MB hidden data
Drag. Drop. Encrypt. Save. That's it.
Everything you need to protect sensitive information, wrapped in an interface anyone can use.
Uses CRYSTALS-Kyber1024, the NIST-standardized algorithm that protects against both classical and quantum computer attacks. Your data stays secure for decades.
LSB steganography modifies only the least significant bits - changes invisible to the human eye. Your images look completely normal.
Decoy mode lets you set two passwords - one reveals innocent content, the other reveals the real secret. Perfect when coercion is a concern.
Distribute your secret across multiple images. All parts are required - lose one, and the data is unrecoverable. Maximum security.
Not just text - hide PDFs, archives, documents, or any file up to 4MB. The recipient extracts the exact original file.
Traditional encryption like RSA and ECC will be broken by quantum computers. QuantHide uses CRYSTALS-Kyber - the encryption standard selected by NIST after a 6-year global competition. Your secrets are protected against threats that don't even exist yet.
No technical knowledge required. If you can attach a file to an email, you can use QuantHide.
Drag and drop any PNG, JPEG, or WebP. Larger images = more hidden capacity.
Type a message or select any file - documents, archives, data.
Choose a strong password. Add a keyfile for two-factor protection.
Your image looks identical but carries encrypted hidden data. Share it anywhere.
Download QuantHide free. No account required. No data collected. Ever.
v1.0.0 • Free & Open Source • MIT License • View all releases