Stringify JSON

Convert JSON objects and arrays into compact single-line strings

Last updated: October 14, 2026

Options

How to use

  • Paste or type your JSON code in the input field
  • Choose double quotes for JSON text or single quotes for a JavaScript JSON.parse expression
  • Click "Stringify" to convert your JSON into a compact single-line string
  • The tool will show you how many bytes were saved by stringifying
  • Use "Copy" to copy the result or "Download" to save as a file

What is JSON Stringification?

JSON stringification converts a JSON object or array into a compact, single-line string format by removing all unnecessary whitespace, newlines, and indentation. This is useful for reducing file sizes, preparing data for transmission, or storing JSON in space-constrained environments.

Result actions

Copy or download the tool output, or share a link to Stringify JSON.

Get new tools in your inbox

An occasional email when we ship new free tools. No spam, unsubscribe anytime.

Related tools

Minify JSON

Compress JSON by removing all unnecessary whitespace

JSONMinify

Obfuscate JSON

Replace JSON property names with short identifiers to reduce size and obfuscate structure

JSONObfuscate

Add Commas to Integers

Add thousand separators to numbers

NumbersFormat

Batch Text Replacer

Replace multiple text patterns at once with support for regex and case sensitivity

TextReplace

Character Count

Real-time text analysis tool counting characters, words, lines, and bytes

Text AnalysisCharacter Count

Convert ASCII Art to Image

Render ASCII art as a visual PNG image with customizable fonts and colors

ASCIIImage

Compact JSON to one line

Paste a valid JSON object, array, or other JSON value and choose Stringify. The tool parses the input and serializes it without indentation, then reports the byte-size difference and lets you copy or download the result. For example, a multi-line object containing a name and a list becomes the same JSON structure on one line; values are not removed.

JSON requires double quotes around property names and string values. The double-quote option produces compact, valid JSON. The single-quote option wraps that JSON in an escaped JavaScript JSON.parse expression, which returns the same value when evaluated but is JavaScript source rather than JSON text.

How to stringify JSON

  1. Paste or type valid JSON.
  2. Choose double quotes for JSON text, or single quotes for a JavaScript expression.
  3. Select Stringify, then copy the result or download it as a file.

Minifying removes formatting whitespace, but it does not compress the data or encrypt it. The conversion runs in your browser; input is not uploaded.