Cursed Text Generator: Zalgo Glitch Text with Diacritics

Zalgo text takes its name from a 2004 internet meme created by Dave Kelly, featuring a fictional eldritch entity called Zalgo associated with chaos and corruption. The visual effect — text that appears to bleed upward and downward with stacked diacritical marks — became a shorthand for horror, madness, and corrupted data in internet culture. The meme predates widespread Unicode support, but as platforms adopted full Unicode rendering, Zalgo text became a practical tool for anyone wanting the aesthetic.

The technical mechanism is Unicode combining characters. The Unicode standard includes a block called Combining Diacritical Marks (U+0300-U+036F) containing 112 characters that modify the preceding base character. These are used legitimately in languages like Vietnamese (which uses up to four stacked diacritics on a single vowel), Arabic (vowel marks above and below consonants), and many African languages. Stacking dozens of them on a Latin letter is technically valid Unicode, even if it was never the intended use.

The three spatial categories of combining marks create the characteristic Zalgo overflow. Above marks (U+0300-U+0314) stack above the character's cap height, growing upward with each additional mark. Below marks (U+0316-U+0333) stack below the baseline, growing downward. Through marks (U+0334-U+0338) overlay the character itself, creating strikethrough-like effects. The combination of all three at high intensity produces the full Zalgo visual.

Intensity matters for practical use. Mild Zalgo (1-3 marks per character) is readable and creates a subtly unsettling effect — the text is clearly legible but looks slightly wrong. Medium (3-6 marks) is the sweet spot for most social media use — visually striking but still parseable. Extreme (8-15 marks) is maximally chaotic and essentially unreadable, best used for pure aesthetic effect rather than communication.

The difference between cursed text and glitch text is worth understanding. Cursed text (this tool) uses combining diacritics to create vertical overflow — the horror aesthetic comes from the text appearing to bleed or overflow its bounds. Glitch text uses character substitution — replacing Latin letters with visually similar Cyrillic, Greek, or other script characters — to create a corrupted-data aesthetic where the text looks almost right but is subtly wrong. Both are Unicode-based, but they produce very different visual results.

Platform rendering varies significantly. Discord renders Zalgo text with full vertical overflow, which is why it became popular there. Twitter/X renders it but constrains line height, so the overflow is clipped. Reddit renders it in comments but may clip in post titles. WhatsApp and iMessage render it but compress the vertical extent. Always test on your target platform, especially at extreme intensity.

For creative writers, Zalgo text offers a way to embed visual horror directly into prose. A character's corrupted dialogue, a cursed inscription, or a glitching AI's output can be rendered in Zalgo text within a story posted to Reddit, Tumblr, or a Discord server, creating an immersive effect that images cannot replicate because the text remains selectable and quotable.