Z

Escape & Unescape

Escape and unescape strings for HTML, XML, Java, C#, JavaScript, JSON, CSV (RFC 4180), and SQL.

Free No signup Client-side Privacy friendly

How to use

  1. 1 Pick the target language — each has its own escape rules.
  2. 2 Toggle Escape (text → literal) or Unescape (literal → text).
  3. 3 Paste your raw or escaped input. Output updates as you type.
  4. 4 Use Swap to flip input and output instantly.

Why use this tool

  • 8 languages — HTML, XML, Java, C#, JavaScript, JSON, CSV (RFC 4180), and SQL.
  • Per-language rule tables — Java forces ASCII-only \uXXXX, JSON uses native JSON.stringify, CSV follows RFC 4180.
  • JSON path uses the native parser — no edge cases hand-rolled.
  • Pure client-side. No upload, no analytics on your content.

Frequently asked questions

Why does Java force ASCII-only output?

Java source files are commonly ISO-8859-1 by default and editors / SCM diffs handle ASCII most safely. The Java escaper emits \uXXXX for any non-ASCII character; the C# and JavaScript ones keep Unicode characters as-is.

Does CSV escape every field?

It treats the entire input as a single field. If the field contains a comma, quote, or newline it wraps in quotes and doubles internal quotes (RFC 4180). For full-row CSV processing use a dedicated parser.

SQL: backslash or quote doubling?

The tool uses quote-doubling (''), which is portable across MySQL, PostgreSQL, SQLite, and SQL Server. Backslash escapes work only in MySQL and break on most other databases.

Related tools?

See HTML Entities Converter for named-entity tables and URL Encoder for percent-encoding.

Summary

Escape & Unescape is a free developer utility by Zerethon Tools. Escape and unescape strings for HTML, XML, Java, C#, JavaScript, JSON, CSV (RFC 4180), and SQL. Runs entirely in the browser — no signup, no upload.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. Escape & Unescape runs entirely client-side — no server upload, no logging, no tracking of your input.

Related tools

JSON Formatter

Format, validate, and minify JSON online. Free, no signup — your data never leaves your browser.

Open tool

SQL Formatter

Format SQL queries online — beautify MySQL, PostgreSQL, SQLite, SQL Server, Oracle, and BigQuery.

Open tool

UUID Generator

Generate UUIDs online — v1, v4, v7, and Nil. Bulk generation up to 10,000. Free, no signup.

Open tool

Password Generator

Generate strong, cryptographically random passwords. Configurable length and character sets — runs in your browser.

Open tool

Build, share, and grow on Zerethon Social

Free signup. Earn points, collect achievements, and connect with creators worldwide.

Sign up free