Let Zalgo Damage ASCII

Let Zalgo Damage ASCII adds Unicode combining marks above, below, and around ASCII characters to create the familiar “glitched” or Zalgo-like appearance. The original characters remain present while the display can become much taller and visually distorted.

This tool is intentionally a Unicode visual-effect generator, not an ASCII converter. The input must be ASCII so you can clearly distinguish the original base characters from the combining marks added to them.

Three density levels are available so you can start with a readable effect and increase it gradually. Because combining marks depend on rendering, different fonts, browsers, and text editors can display the same generated string differently.

Zalgo-style text is useful for UI stress tests, text-rendering experiments, screenshots, and checking whether a system handles combining marks correctly. It should not be used as a method of text normalization, security, or data hiding.

After generation, compare the visible result with the original and inspect the string in a Unicode-aware tool if you need to count code points. The generated output is no longer ASCII even though its base characters came from ASCII.

Processing is local. Copy or download the result when you need to carry the visual stress-test string into another application.

• Adds Unicode combining marks.
• Supports multiple damage densities.
• Keeps ASCII base characters unchanged.
• Rejects non-ASCII input.
• Produces visibly glitched text.
• Includes sample data.
• Runs locally.
• Supports Copy and Download.
• Explains that output is Unicode.
• Useful for rendering tests.

1. Load sample.
2. Choose density.
3. Generate the effect.
4. Compare with the original ASCII.
5. Inspect the Unicode result in another viewer if needed.
6. Copy/download.
7. Do not treat the output as ASCII.

Hello. Combining marks are added around the letters.

UI test. Use a short label to see how a component handles tall text.

Font test. Try the same output across different fonts.

Low density. Produces a lighter effect.

High density. Adds more combining marks and can become difficult to read.

• Useful for rendering stress tests.
• Clearly separates ASCII input from Unicode output.
• Adjustable intensity.
• Local.
• Good for UI QA.
• Easy to copy.
• Deterministic base text.