Generate creepy, cursed, and glitched Zalgo text by adding chaotic Unicode combining diacritics to your standard text.
Adjustable glitch intensity Copy with one click Real, searchable text underneath Runs entirely in your browser
Normal Text
Moderate
Zalgo Text
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What is Zalgo Text?
Zalgo text is digital text that has been heavily modified with combining diacritical marks to appear glitched, creepy, or chaotic. It originated as an internet meme associated with a fictional entity called "Zalgo" that corrupts reality. When applied, the text seems to "bleed" upwards and downwards, overlapping with UI elements and breaking standard formatting.
How does it work technically?
The Unicode standard includes "Combining Diacritical Marks" (such as accents, tildes, and dots) designed to be layered on top of or underneath standard characters (e.g., adding an accent to an 'e' to make 'é'). Unlike normal characters, combining marks have zero width and mathematically attach to the preceding character. Zalgo generators exploit this by attaching dozens of combining marks to a single letter, pushing the rendering engine to draw them progressively higher and lower until they overflow the line height.
Is it safe to use?
Yes! It's just standard text. However, be aware that some strict social media platforms or video game chats may automatically filter or truncate extreme Zalgo text to prevent users from visually blocking the UI (a practice known as text bombing). You can use the "Chaos Slider" above to keep the glitch effect moderate and acceptable for most platforms.
What Zalgo text really is
Despite the chaotic look, Zalgo is completely standard Unicode. It works by appending combining diacritical marks — the same mechanism that puts the accent on “é” — to each base character, except instead of one mark it piles on dozens, stacking glyphs far above and below the baseline. The Unicode spec doesn’t cap how many combining marks a character can carry, so the text renderer dutifully draws them all, producing the “corrupted” effect. Crucially, the base letters underneath are untouched: H̷e̵l̶l̶o̷ is still the searchable, copyable string “Hello” with marks attached.
Why it breaks things (which is the point)
Zalgo is essentially adversarial text, and the ways it breaks software map directly to bugs worth catching:
Symptom
Underlying issue it reveals
Text bleeds over other elements
Missing overflow/line-height containment
Layout stutters or tab freezes
Renderer recalculating thousands of glyph positions
”Data too long for column” error
A 1-char string expanding to 50+ bytes
Length validation passes huge input
Counting characters, not bytes/marks
If your app survives a Zalgo paste cleanly, it’ll survive most real-world Unicode abuse.
Legitimate uses
QA stress-testing — the overflow, normalization, and length cases above.
Security test vectors — confirming input sanitization and storage limits hold.
Creative / aesthetic — horror themes, glitch art, edgy social posts and usernames (where the platform allows it).
A note on rendering and limits
Push the intensity slider high enough — dozens of marks across a long string — and you can genuinely lock up a browser tab, because the renderer has to compute tens of thousands of glyph coordinates at once. That’s the layout-thrashing failure mode you might be trying to provoke in testing, but dial it back for normal use. Everything runs locally in your browser, the base text is always recoverable with the normalization trick above, and remember that storing Zalgo needs a utf8mb4-capable column since the stacked text balloons in byte size.
Zalgo Glitch Text Generator processes your text in the browser, which means even sensitive strings stay private.
It's one of the free
String & Text Tools
on UseToolSuite.
Below you'll find a step-by-step guide, answers to common questions, and related tools.
Last updated
How to Use This Tool
1
Type your text
Enter the word or phrase you want to make look cursed.
2
Set the intensity
Slide from a light glitch to a fully chaotic stack of marks above and below the letters.
3
Copy the result
Copy the Zalgo text into a chat, post, or username for the creepy effect.
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Key Concepts
Essential terms and definitions related to Zalgo Glitch Text Generator.
Combining marks
Unicode characters that attach to the letter before them — normally accents. Zalgo stacks many of them per letter to create the glitch.
Base character
The normal letter underneath the marks. It stays intact, which is why Zalgo text is still searchable and copy-pasteable as real words.
Overflow clipping
When an app hides anything that spills outside a line's set height — the reason heavy Zalgo looks cut off in some places.
Frequently Asked Questions
How does the glitch effect work?
It piles on Unicode "combining marks" — the same accent characters used for letters like é — but many at once, stacked above and below each letter. There is no limit built into Unicode, so the marks tower upward and downward, which is the cursed look.
Why does it get clipped in some apps?
Apps that set a fixed line height and hide overflow will cut off the marks that spill outside the line. The text is fine; that platform just does not give it room to render fully.
Is the underlying text still readable by search or screen readers?
Yes — the base letters are unchanged underneath, so it stays searchable. But screen readers try to announce every mark, so heavy Zalgo is effectively unreadable to them; keep it decorative.
Is Zalgo text useful for anything besides looking creepy?
Yes — it's a surprisingly good QA and security stress-test vector. Because Zalgo stacks unlimited combining marks on each character, it's the fastest way to check whether your UI gracefully handles text that overflows its line box: does your `overflow: hidden` clip it, or does it bleed over other elements? Does a single 'character' that expands to 50+ bytes break your `VARCHAR(255)` column or trip length validation? Does your text-normalization pipeline collapse it correctly? Testers and developers paste Zalgo into input fields specifically to find these edge cases before real (or malicious) input does. The creepy look is the by-product; the stress-testing is the genuine engineering use.
How do I remove Zalgo combining characters from text?
Zalgo is built from Unicode combining diacritical marks (the U+0300–U+036F range) layered onto normal base characters, so you strip it by removing those marks. The reliable approach: apply Unicode normalization (NFC or NFD) and then filter out the combining-mark range — in JavaScript, `text.normalize('NFD').replace(/[\u0300-\u036f]/g, '')` removes the stacked diacritics and leaves the underlying base letters intact. The important thing to realize is that the original text is still there underneath: Zalgo doesn't encrypt or replace your letters, it just decorates them, so the base string is always recoverable and remains fully searchable.
Troubleshooting & Technical Tips
Common errors developers encounter and how to resolve them.
The page or app lags with very heavy Zalgo
A long string with dozens of marks per letter is a lot for a browser to draw. Lower the intensity or shorten the text if things slow down.
A form or database rejects the text as too long
Each glitched letter is many characters under the hood, so a short-looking string can exceed a small field limit. Reduce the intensity or use a field that allows longer text.
