Free JSON Formatter Online
Format, beautify, and validate your JSON data. Easy to read, syntax highlighted, and completely processed in your browser.
Files never uploaded
Instant processing
100% free
Frequently Asked Questions
Is my JSON data uploaded to your server?▾
No. The formatting and validation happen entirely in your web browser. Your data is never sent anywhere, ensuring complete privacy.
What is JSON?▾
JSON (JavaScript Object Notation) is a lightweight data-interchange format. It is easy for humans to read and write, and easy for machines to parse and generate.
How does the validator work?▾
We use standard browser parsers to read your text. If it does not conform to the strict JSON specification, we catch the error and highlight it for you.