Zalgo text generator

The full zalgo effect: combining marks stacked above, through and below each character, with the intensity under your control.

The name comes from a 2004 internet horror meme about a corrupting entity, and the visual works because it is genuinely a rendering failure rather than a designed effect. The marks used are real Unicode combining diacriticals, the same mechanism that puts an accent on a letter — stacking dozens of them is valid Unicode that no renderer was designed to handle gracefully. Practically: it does not survive every platform, some normalise it away on save, and it is worth checking the result renders before relying on it, because how far it bleeds depends entirely on the layout it lands in.