Convert text to \\uXXXX Unicode escape notation

Represent Unicode characters with JavaScript-compatible escape sequences.

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ToolUnicode Escape
Input
Output
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How it works

Unicode characters are represented with escape notation such as \uXXXX or code-point escapes, preserving the underlying scalar value when decoded. Surrogate-pair notation and code-point notation are distinct source forms for characters outside the BMP.

  • Four-hex-digit escapes match UTF-16 code units; brace escapes represent a full code point.

Worked example

Escape Non-ASCII
Convert non-ASCII characters to \uXXXX notation
Input
											café naïve
Output
												caf\u00E9 na\u00EFve

When to use this

ASCII-only source files, invisible-character fixtures, and Unicode tests use escapes.

Edge cases

  • An astral character needs two UTF-16 escapes or one code-point escape.
  • A lone surrogate is not a valid Unicode scalar value.
  • JavaScript escaping does not make text safe for HTML or URLs.

References