About JSON to String

Convert JSON to escaped string format. Part of the DevTools Surf developer suite. Browse more tools in the Converters collection.

Use Cases

• Backend devs embedding JSON payloads in database text columns
• DevOps engineers storing JSON configs in environment variables
• API developers nesting JSON strings inside outer JSON envelopes
• Frontend devs preparing JSON data for HTML data attributes

Tips

• Use this when embedding JSON inside other JSON string fields
• Verify that unicode characters are properly escaped in the output
• Check that the output can be parsed back to valid JSON

Fun Facts

• JSON string escaping follows RFC 8259, which requires escaping only 6 characters: backslash, quote, and 4 control characters.
• Double-encoding JSON (stringifying twice) is a common source of API bugs, creating strings like '{\"key\":\"value\"}'.
• The maximum length of a JSON string is limited only by available memory, though most parsers cap at 2 GB.

FAQ

What does JSON-to-string do that stringify does not?

JSON-to-string produces a string literal ready to paste into source code — escaped for the target language (JS, Python, Go). Stringify produces a single JSON string suitable for embedding in another JSON value.

Which languages are supported?

The output is valid for any C-family language (JavaScript, TypeScript, Java, C#, Go, Rust) and Python. The escape set is ASCII-safe by default.

Why would I embed JSON in source code?

Tests, fixtures, mock data, seed scripts — anything where the JSON lives alongside the code. This avoids maintaining a separate .json file for small payloads.

Does it preserve line breaks?

Line breaks become \n inside the string so the code compiles as a single-line literal. If you want multi-line, paste into a template literal manually.