Generate keys and embed encrypted envelopes into image metadata
Mixed via SHA-256 with os-level randomness. Still produces unique keys each time.
SHA-256’d to 32 bytes. Same seed → same key. Leave empty for random.
This password is required to unlock the WIF later. There is no recovery if lost.
Pixels are never re-encoded — animations and existing metadata (EXIF, GPS, orientation) survive. TIFF/WebP/HEIF: use the Python tool.
No file selected — a blank PNG will be created.