Remove vowels from text to create cryptic or shorthand forms. Also supports adding vowels back (re-vowelling) mode.
Disemvowelling is the removal of vowels from text — a technique sometimes used humorously online, in text compression experiments, or for generating shorthand notation. Surprisingly, consonant-only text is often still readable by humans: "Th qck brwn fx jmps vr th lzy dg." It exploits the brain's pattern-completion ability.