Hide secret messages in plain sight using zero-width characters. The hidden message is completely invisible.
This tool converts your secret into bits, then maps each bit to an invisible Unicode character:
U+200B (zero-width space) for 0U+200C (zero-width non-joiner) for 1The invisible sequence is appended to your cover text. Only someone with this tool can detect and decode it.
Some platforms (Twitter, messaging apps) may strip or normalize these characters.
Works reliably in emails, text files, and platforms that preserve Unicode exactly.
Anyone with this tool can decode the message if they have the stego text.
These invisible Unicode characters are used for encoding:
They take no visible space but can carry hidden information when properly decoded.
Test your encoded message by immediately decoding it before sharing.
For better security, combine with encryption before hiding.
Use in emails or documents where Unicode is preserved.