JSON Stringify & Escape Online

Stringify JSON to a single line, escape special characters for embedding in strings, or unescape a JSON-escaped string.

Last updated: April 13, 2026

Input

Output

When you need JSON escape or stringify

Developers reach for a JSON escape tool in a few common situations:

Embedding JSON inside a string — when a JSON payload needs to go inside another JSON string value (e.g., a webhook body template), every quote and backslash must be escaped.
Compacting formatted JSON — stringify takes a multi-line, indented JSON document and collapses it to a single line for use in config files, environment variables, or HTTP headers.
Debugging escaped strings — pasting an over-escaped string into the unescape mode reveals the actual content: newlines become real line breaks, escaped quotes become quotes.
Preparing test data — when writing unit tests, you often need a string literal containing JSON. Escape mode gives you the properly escaped version to paste into your code.

The three modes explained

Stringify — parses the input as JSON and re-serializes it with no whitespace. If the input is not valid JSON, it wraps the raw text as a JSON string value (with proper escaping).
Escape — treats the input as raw text and escapes the six characters that are special inside JSON strings: double quotes, backslashes, newlines, carriage returns, tabs, and form feeds.
Unescape — reverses the escape process. Paste a string with \n, \", or \\ escape sequences and get the actual characters back.

JSON escape vs URL encode vs HTML encode

These are three distinct escaping schemes for three different contexts:

JSON escape — backslash sequences (\", \n) for use inside JSON string values.
URL encode — percent-encoding (%20, %3D) for use in URLs. See our URL Encode/Decode tool.
HTML encode — entity references (<, &) for use in HTML documents. See our HTML Encode/Decode tool.

Using the wrong escaping scheme is a common source of bugs. If you're putting data inside a JSON string, use JSON escape. If you're building a URL, use URL encode. If you're rendering text in HTML, use HTML encode.

Related JSON tools on CodeBoxTools

JSON Formatter — format, validate, and minify JSON.
JSON Viewer — explore JSON as an interactive tree.
Base64 Encode/Decode — another common encoding for embedding data.

Frequently Asked Questions

What does JSON stringify do?

JSON.stringify() converts a JavaScript value to a JSON string. This tool applies it to compact formatted JSON into a single line with no extra whitespace.

What characters need escaping in JSON?

Double quotes, backslashes, newlines, carriage returns, tabs, form feeds, and backspaces all need backslash escaping inside JSON string values.

What is the difference between stringify and escape?

Stringify takes valid JSON and compacts it. Escape takes any raw text and escapes special characters so it can be safely embedded inside a JSON string value.

Can I unescape a JSON string?

Yes. Switch to Unescape mode and paste your escaped string. The tool will convert escape sequences like \n back to actual newlines.

Is my data safe?

Yes. This tool runs entirely in your browser. Your text is never sent to any server.

Does this validate JSON?

Stringify mode will parse and re-serialize valid JSON. If the input is not valid JSON, it wraps the raw text as a JSON string. For explicit validation, use our JSON Formatter.