JSON Formatter — Format, Validate & Minify
Format, validate, minify, and beautify JSON online free. Instant results.
Runs in your browser — nothing is uploaded. Verify it
About the JSON Formatter — Format, Validate & Minify
Format, validate, minify, and beautify JSON online.
Working with JSON is a daily task for developers.
How to use the JSON Formatter — Format, Validate & Minify
- Paste your JSON, or drop a .json file onto the input.
- It formats as you type — switch between pretty and minified, and pick an indent.
- Copy or download the result.
Frequently asked questions
What is a JSON formatter?
A JSON formatter is a tool that takes JSON data and applies formatting — indentation, line breaks, minification, or validation — to make it readable or compact.
Is my JSON data private?
Yes. All JSON processing happens entirely in your browser using JavaScript. Your JSON is never uploaded to any server, ensuring complete privacy.
What is the difference between format and minify?
Format adds indentation and line breaks to make JSON readable. Minify removes all whitespace to make JSON as small as possible.
Can I validate JSON with this tool?
Yes. Validation is live — every keystroke re-checks your JSON, and any syntax error is reported with the exact line and column. The last valid result stays on screen while you fix it.
Guides
- How to Format, Validate, and Minify JSON
Learn how to format, validate, and minify JSON online. A practical guide to working with JSON safely in your browser.
- File Hash Generator: Verify a SHA-256 Checksum
How to verify a downloaded file against the SHA256SUMS file its publisher ships, without copying one hash out of forty by hand.