Escape text with quotes and newlines for JavaScript
Input
Hello "World"!
Next LineExample output
Hello \"World\"!\nNext LineString Escape & Unescape
Text100% Client-SideReady
TEXT
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0 B / 4.77 MB
Read-only
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About this tool, examples & FAQ
Escape raw text into source code string literals, or unescape escaped strings back to plain text. Supports JavaScript, TypeScript, Python, C/C++, Java, C#, SQL single-quote doubling, CSV quotes, and regex metacharacters with 100% client-side privacy.
Key facts
| Supported Dialects | JavaScript, TypeScript, Python, C/C++, Java, C#, SQL, CSV, Regex |
|---|---|
| Escape Sequences | \n, \r, \t, \b, \f, \v, \0, \", \', \\, \xHH, \uHHHH, \u{...} |
| Maximum Input | 5 MB |
| Execution Deadline | 2 s |
How to use
- Select your target language dialect (JavaScript, C, Python, SQL, Regex, or CSV).
- Choose which quotes to escape (Double Quotes, Single Quotes, or Both).
- Toggle wrapping quotes or non-ASCII Unicode character escaping if needed.
- Paste your raw string or escaped literal into the input pane and click Run.
- Click Swap at any time to invert between Escape and Unescape operations.
Examples
Unescape backslash sequences back into plain text
Input
Hello \"World\"!\nNext LineExample output
Hello "World"!
Next LineEdge cases
SQL Single-Quote Escaping vs C-style Backslashes
Standard ANSI SQL escapes single quotes by doubling them ('') rather than using backslashes. The SQL dialect accurately doubles single quotes and supports optional string delimiter wrapping.
Astral Plane Unicode & ES6 Variable-Length Hex
The unescape parser supports both fixed 4-digit \uXXXX sequences, ES6 bracketed \u{1F680} variable-length code points, and 8-digit \U0001F680 sequences without corrupting surrogate pairs.
Trailing Unescaped Backslashes
If a string ends with an isolated dangling backslash that has no following character to escape, the executor detects it and preserves the backslash while raising a descriptive warning diagnostic.
How it works
- Scans characters sequentially to identify reserved characters, quotation marks, and control codes according to the selected syntax rules.
- Replaces control characters with their recognized 2-character escape representations (\n, \r, \t, etc.).
- During unescape, resolves escape tokens, hex codes (\xHH), and Unicode codepoints (\uHHHH) into standard UTF-16 code units.
- Executes entirely within an isolated browser Web Worker without any remote server requests.
Related workflows
JSON Escape & Unescape
Escape raw text and JSON strings for programming literals, or unescape escaped strings back to readable text.
HTML Entities Encoder & Decoder
Encode reserved HTML characters and symbols into named or numeric HTML entities, and decode entities back to plain text.
XML Entities Encoder & Decoder
Encode and decode the 5 predefined XML entities (&, <, >, ", ') and numeric character references.
ASCII & Unicode Code Point Converter
Convert text characters into ASCII/Unicode code points, hex, decimal, or escape sequences, and translate code points back to text.
Frequently asked questions
How does this differ from the JSON Escape tool?
JSON Escape strictly adheres to RFC 8259 JSON grammar (only double quotes, no \v or \' or \x escapes). String Escape supports multi-language semantics including single quotes, Python/C escapes, SQL doubling, and regex character escaping.
Why do string literals need escaping?
Programming languages use quotes to demarcate string boundaries and special characters for newlines and tabs. Escaping allows embedding quotes and control codes directly into source code strings without causing syntax errors.
Is any pasted text sent over the internet?
No. All escaping, unescaping, and diagnostics run 100% client-side inside your browser.
References
- ECMA-262 ECMAScript Language Specification: String Literals — Specification for JavaScript string escape sequences and Unicode code point escapes