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JSON Formatter

Format, beautify, minify and validate JSON instantly in your browser. Free, private, no upload required.

All processing happens locally in your browser. Files are never uploaded.

Introduction

JSON Formatter helps you turn messy, minified JSON into clean, readable code with consistent indentation. Everything runs directly in your browser, so your data never leaves your device.

Features

  • Beautify JSON with 2 or 4 space indentation
  • Minify JSON into a single compact line
  • Validate syntax with precise error locations
  • Copy or download the result with one click
  • Fully local processing, no uploads

How to use

  1. 1Paste your JSON data into the input editor.
  2. 2Choose an indentation size and click Format, or use Minify.
  3. 3Review any syntax errors with line and column details.
  4. 4Copy or download the formatted output.

Frequently asked questions

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