What Is Zalgo Text?
Zalgo text is text that has been modified by adding an excessive number of Unicode combining diacritical marks — characters normally used for accents, underlines, and overlines — so that the marks overflow above, through, and below the original characters. The result is a glitchy, distorted, “corrupted” appearance that looks like the text is being consumed or possessed.
The name comes from “Zalgo,” a creepypasta Internet meme about an entity of chaos. Unlike images or CSS effects, Zalgo text is real Unicode text that can be copied, pasted, and used anywhere Unicode is supported — social media, messaging apps, comments, and more. This tool runs entirely in your browser with no server processing.
How to Use This Tool
Enter Your Text
Type directly into the input editor, paste content with Ctrl+V, or upload/drag a .txt file.
Adjust Intensity
Use the intensity slider (1–10) to control how many combining marks are added per character. Higher values create more extreme distortion.
See Instant Output
The Zalgo-ified text appears in real-time in the right panel. The output re-generates whenever you change the input or intensity.
Copy or Download
Use Copy to copy the Zalgo text to clipboard, Download to save as a .txt file, or Clear to reset.
Features Explained
Adjustable Intensity
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The intensity slider controls how many combining marks are stacked on each character. At intensity 1, each character gets about 4 marks for a subtle glitch. At intensity 10, each character gets over 30 marks for extreme distortion that overflows into surrounding lines.
Three Mark Directions
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Zalgo text uses three categories of Unicode combining marks: marks that extend upward (48 characters from the Combining Diacriticals block), marks that overlay the middle of the character (22 characters including strikethroughs and overlays), and marks that extend downward (39 characters including underlines and below-letter diacritics). This tool randomly selects from all three categories for each character.
Real-Time Processing
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The output updates instantly as you type or adjust the intensity slider. The transformation is memoized for performance, so only changes to the input or intensity trigger recalculation.
Space and Newline Preservation
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Spaces and newline characters are preserved without modification, keeping your text structure readable even with heavy Zalgo distortion applied to the visible characters.
File Upload & Drag and Drop
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Upload a .txt file using the Upload button or drag and drop a text file directly onto the input area. The file contents replace the current input text.
Who Is This Tool For?
Social Media Users
Create attention-grabbing posts, bios, and comments on Twitter/X, Instagram, Discord, Reddit, and TikTok with creepy glitch text.
Gamers
Stand out with corrupted-looking usernames, clan tags, and in-game chat messages that look otherworldly.
Content Creators
Add horror or glitch aesthetics to video titles, thumbnails, and descriptions for creepypasta, ARG, or horror content.
Developers
Test how your app handles Unicode combining characters, text overflow, and rendering edge cases with extreme mark stacking.
Meme Makers & Pranksters
Send unnerving messages to friends, create cursed text memes, or add chaos to group chats and forums.
Horror & ARG Creators
Build immersive alternate reality games, creepypasta stories, or horror websites using authentically corrupted-looking text.
Zalgo Mark Reference
| Direction | Mark Count | Unicode Range | Per Character (at intensity) |
|---|---|---|---|
| Above | 48 | U+0300–U+036F | intensity × 3 + 1 |
| Middle | 22 | U+0315–U+0362 | ⌈(intensity × 3 + 1) / 2⌉ |
| Below | 39 | U+0316–U+035A | intensity × 3 + 1 |
At intensity 1, each character gets ~6 combining marks total. At intensity 10, each character gets ~46 marks. Marks are selected randomly from each pool.
Tips for Zalgo Text
Start with low intensity
Intensity 1–3 gives a subtle, eerie effect that's still readable. Use higher values (7–10) only when you want full chaos and don't need the text to be legible.
Works on most platforms
Zalgo text works on Twitter/X, Discord, Reddit, Instagram bios, Facebook, WhatsApp, Telegram, and most messaging apps. Some platforms may strip combining marks.
Test rendering carefully
Different fonts and platforms render combining marks differently. Some may clip the marks, others may push adjacent lines apart. Preview before posting.
Combine with other effects
Layer Zalgo text with upside-down text, strikethrough, or bold/italic Unicode generators for even more creative effects.
Use for developer testing
Zalgo text is excellent for testing text input handling, database storage, rendering pipelines, and UI overflow behavior in your applications.
Keep messages short
Zalgo text is most effective in short bursts — a word or sentence. Long paragraphs of heavily distorted text become unreadable and lose their impact.
Privacy & Security
This tool runs 100% in your browser. Your text is never uploaded to any server. All Zalgo transformations use local Unicode combining character insertion.
Your input is stored only in your browser's local storage so it persists when you refresh the page. You can clear it at any time using the “Clear” button. No cookies are used, no analytics track your text content, and no third-party services have access to what you type.