Code Formatting

JSON Formatter

Format, compress and validate JSON data.

Input JSON
Formatted result
Formatted result will appear here
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What is JSON Formatter?

JSON (JavaScript Object Notation) is a lightweight data interchange format. The JSON formatter beautifies or minifies JSON data, making it easier to read and debug, or more compact for transmission.

Features

  • Format: Beautify JSON with proper indentation
  • Minify: Remove whitespace for compact output
  • Validate: Check JSON syntax for errors
  • Custom Indent: Choose 2 or 4 spaces, or tabs

Use Cases

  • API Development: Format API responses for debugging
  • Configuration Files: Edit config files more easily
  • Data Analysis: Inspect JSON data structures
  • Code Review: Make JSON diffs more readable

Frequently Asked Questions

Why does my JSON fail validation even though it looks correct?
The most common causes: a trailing comma after the last item, single quotes instead of double quotes, unescaped newlines inside strings, or comments — none of these are valid JSON. The validator points to the exact line and column; fix the first error and re-run, because later errors are often cascades of the first one.
What is the difference between beautify and minify?
Beautify adds indentation and line breaks so the structure is easy to read and diff; minify strips every unnecessary byte for transport. They are lossless inverses — both parse to exactly the same data.
Is it safe to paste API responses that contain tokens?
Formatting runs entirely in your browser with JavaScript; the input never leaves your machine. Still, make it a habit to redact live credentials before sharing formatted output anywhere.