What is zalgo text?

A forum in-joke, an invented eldritch god, and a gap in the Unicode standard. The three of them together produced the most recognizable text effect on the internet.

By The Glitch Text Generator team · Published 2026-09-08 · Last reviewed 2026-09-08

The short definition

Zalgo text is digital text modified with large numbers of Unicode combining characters, the marks normally used to add accents above and below letters. Piled up far past their intended use, they make words appear to overflow and bleed into the lines around them.

The name comes from a fictional entity. The technique came from people realizing Unicode would let them draw that entity's influence in plain text.

2004: the Something Awful thread

The style traces back to the Something Awful forums in 2004, where a member began posting image macros of glitched and distorted cartoon characters exclaiming "Zalgo!" The joke spread through the forum, and other members built out the character behind it.

What they built was an unimaginable, apocalyptic figure in the mold of H. P. Lovecraft's Great Old Ones. An eldritch deity whose presence corrupts whatever it touches, including, conveniently for a text-based forum, the text itself. The catchphrase that stuck to it was "he comes."

That framing is why the effect is sometimes called eldritch text. Same characters, different doorway into the same joke.

The jump from images to text

The early Zalgo posts were pictures. The leap that made the style permanent was realizing you did not need an image at all, because Unicode already contained everything required.

Combining diacritical marks attach to the character before them and have no width of their own. Nothing in the standard limits how many you may attach. Stack thirty on one letter and rendering engines will dutifully draw all thirty, producing the dripping, overflowing look the images had been faking.

Once the effect was made of characters rather than pixels, it could be copied, pasted, and posted anywhere that accepted typing. The mechanism is covered in detail here, and the symbol reference lists every mark involved.

The years it genuinely broke things

Zalgo has a real history as a denial-of-service tool, which is unusual for a meme.

Some versions of the Apple Messages app could not lay out heavily stacked text and crashed outright. That failure was used deliberately to attack iOS devices. Zalgo messages sent through Gmail have caused crashes too. These are documented on Wikipedia's page on zalgo text, which is the best-sourced public account of the style.

Modern text engines handle it far better. Very long zalgo strings can still stall an older phone, so sending a wall of maximum-intensity text to someone is a rude thing to do even now.

The yearbook

The best illustration of what zalgo does to a layout is not technical. In 2020 a student submitted "hamburger" in zalgo text as his school yearbook caption. It was printed as submitted. The stacked marks overflowed their line and ran across both his photograph and the photograph of the student below him.

That is exactly the behavior that makes zalgo unsuitable for anything with a layout to respect, and exactly why it is so effective when the layout is the thing you want to attack.

Zalgo, glitch, cursed and creepy

These names get used interchangeably and then argued about. In practice they describe the same Unicode trick at different volumes.

How the common names for the effect differ
Name	What people usually mean
Creepy	Light marking. Words stay readable and just feel wrong.
Glitch	Moderate damage. The umbrella term most people search for.
Corrupted	Heavy but still parseable, like a damaged file.
Zalgo	Extreme stacking above and below. Letters barely hold.
Cursed	Everything, including marks driven through the letters.

Is it still used?

Constantly, though the context has moved. It left the forums for Tumblr and Twitter, then for Discord, TikTok and Instagram. It shows up in horror edits, glitchcore and weirdcore aesthetics, gaming handles, ARG storytelling and any post that wants to signal that something is wrong before a word gets read.

Search interest in glitch and zalgo text generators has held remarkably steady for a decade, which is unusual for anything that started as a forum joke.

Zalgo questions

What does zalgo text mean?

Zalgo is the name of a fictional entity from a 2004 creepypasta, and the text style is named after it. Writing associated with the character was drawn as corrupted, overflowing letters, and the Unicode version reproduces that by stacking dozens of combining marks on each character.

How many combining marks does zalgo text use?

At the top of the range here, each letter carries up to about 30 marks, drawn from the Combining Diacritical Marks block at U+0300 to U+036F. That is roughly ten times more than any real writing system needs.

Does zalgo text still crash apps?

Rarely now, but it did. Some versions of Apple Messages could not lay out heavily stacked text and crashed, and the same behavior was used to knock out iOS devices deliberately. Gmail has had its own failures with it. Modern text engines handle it far better, but very long zalgo strings can still stall an older phone.

How do I make zalgo text less intense?

Pull the intensity slider down or switch off the Through group. Marks that cut across letters destroy readability faster than marks above or below them, so turning them off is usually the fastest way to get something legible.

Can zalgo text be turned back into normal text?

Yes. The base letters are untouched underneath, so stripping every combining character returns the original string exactly. Some text editors do this with a normalize-and-filter step. Copying zalgo into a plain search box often strips it automatically.

Is eldritch text the same as zalgo text?

Same thing, different name. Zalgo was written as an eldritch figure in the Lovecraft mold, so people who came to the style through cosmic horror rather than through the forum meme tend to call the output eldritch text. The characters are identical.