String Escape & Unescape

Escape and unescape strings for JavaScript, JSON, HTML, SQL, and regex. Handle special characters safely.

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How to use String Escape & Unescape Online

  1. 1
    Input Data or ParametersPaste your input string, code payload, or select parameters into the editor.
  2. 2
    Instant Local ComputationThe tool processes your request in real-time inside your browser using client-side JavaScript.
  3. 3
    Copy or Export OutputCopy the formatted result to your clipboard or download the output payload instantly.

About this tool

Special characters in strings can cause syntax errors, security vulnerabilities, or unexpected behavior if not properly escaped. This tool handles escaping for multiple contexts.

JavaScript escaping: Backslash-escape characters that would break a JS string literal (\n, \t, \\, \', \").

JSON escaping: Escape a raw string so it can safely appear as a JSON string value. Handles all JSON escape sequences.

HTML escaping: Convert < > & " ' to HTML entities for safe display in HTML documents.

SQL escaping: Escape single quotes for SQL string literals (never use this as the sole protection — use parameterized queries).

RegEx escaping: Escape metacharacters so a string can be used as a literal pattern in a regular expression.

URL escaping: Same as URL encoding — see the URL Encoder/Decoder tool for full URL parsing.

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Frequently Asked Questions

When do I need to escape a string?
Whenever you embed a string into another context that has its own syntax: putting text in an HTML attribute, a JSON value, a SQL query, etc.
What is a newline escape sequence?
\n represents a newline character (line feed). Other common sequences: \t (tab), \r (carriage return), \\ (backslash).
Is SQL escaping safe for preventing SQL injection?
No — always use parameterized queries/prepared statements. String escaping alone is not sufficient for SQL security.
What characters need to be escaped in regex?
. * + ? ^ $ { } [ ] | ( ) \ — these are all metacharacters with special meaning in regex.

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