JSON Formatter & Validator
Beautify, format, minify, and validate JSON data online. Highlight syntax errors, pinpoint exact line numbers, and download formatted JSON with 2 or 4 space indentation.
How to Convert JSON to JSON
Paste JSON
Paste your unformatted or minified JSON string into the editor.
Format or Minify
Click Format to beautify the tree or Validate to check syntax.
Copy or Download
Copy your clean JSON or save it directly as a .json file.
Key Features
Pretty print JSON with 2-space or 4-space indentation
Instant syntax validation with exact error lines and column alerts
Minify and compact JSON to eliminate unnecessary whitespace
One-click copy to clipboard and downloadable .json output
Monospace code editor with line counts and syntax highlighting
Runs completely in the browser for maximum speed and confidentiality
Common Use Cases
Frequently Asked Questions
Our parser pinpoints invalid trailing commas, unquoted keys, and missing braces with line and column numbers.
No, everything parses locally in your browser memory.
Your data stays on your machine and is never sent across any network.