Crypto

JavaScript Escape / Unescape

Escape or unescape JavaScript string literals. 100% client-side.

Handles \\ \" \n \t \r \xHH \uHHHH. Escape produces JS string literal format.

How to use

  1. Enter a domain, URL, or value relevant to JavaScript Escape / Unescape.
  2. Run the check and review the output carefully.
  3. Apply recommended fixes, then run the check again to verify.

Common use cases

  • Pre-deployment validation for JavaScript Escape / Unescape.
  • Incident triage when security checks fail in production.
  • Periodic security review as part of technical SEO and hardening.

Example inputs

Hello "World"path\to\file

Common issues and fixes

Unescaped quotes in JS string

Quotes and backslashes break string literals. Escape \ " ' before embedding.

Wrong escape context

JS escape for JS strings. Use HTML entities for HTML, URL encode for URLs.

Unicode escapes

\uXXXX for BMP. Use \u{XXXX} for astral. Decode in correct order.

Recommended remediation

Escape \ " ' \n \r \t. Use JSON.stringify for JSON. HTML encode for HTML attributes.

FAQ

Is JavaScript Escape / Unescape free to use?

Yes. This tool is free and can be used without account registration.

Do you store submitted values?

Only the minimum processing needed for the check. For client-side tools, data stays in your browser.

How should I use these results?

Use the output as a diagnostic baseline, apply fixes in your stack, then re-run the check to confirm remediation.

Related security tools

URL Encoder / Decoder

Encode and decode URLs with percent-encoding. Component mode for query params. 100% client-side.

JSON Validator

Validate, format, minify JSON. Error location. 100% client-side.

HTML Entity Encoder / Decoder

Encode &, <, > to HTML entities. Decode back. Prevent XSS.