Online JSON Formatter and Validator
Free online JSON formatter: beautify, minify, validate, switch between text and tree views, control indent and key order, optionally escape Unicode—ideal for APIs, tests, and debugging.
Format, beautify, minify and validate JSON online with clear error details, key sorting, custom indentation and text or tree views. Your data stays in the browser.
How to use
What is this for?
Beautify, minify, and validate JSON directly in the browser—useful for API payloads, log snippets, and config files.
Suggested workflow
- Paste or upload JSON, or load the sample to explore the UI.
- Pick indent and key-sort options; toggle Unicode escaping if needed.
- Use Format or Minify, then Validate to confirm syntax.
- Switch between code and tree views for large structures, then copy or download.
Tips
- In tree view, expand or collapse nodes to navigate quickly.
- Strip newlines helps when you receive a single-line blob with stray line breaks.
- Key sorting only affects object keys, not array element order.