Martian Language Converter

Encodes and decodes text using a fixed substitution map that replaces each English letter (a-z, A-Z) with an exotic Unicode look-alike glyph (for example a becomes ∴, A becomes ᗩ). Conversion runs in both directions so the same tool can obfuscate or restore text.

1. Type or paste your text into the input textarea. 2. Click the To Martian button to substitute every mapped letter. 3. Click the From Martian button to reverse the substitution using the inverse map. 4. Click Copy on the result card to copy the converted output. 5. Non-letter characters (digits, punctuation, emoji) pass through unchanged.

The map is many-to-one in a few cases (for example both B and b share glyphs with other letters), so a round-trip of Martian text may not reproduce the original casing exactly. Decoding builds a reverse map from the encoding map; when a glyph maps back to multiple originals, the last-defined mapping wins. The output is purely cosmetic and is not a real cipher.