STEP 1
Paste Your JSON
Free JSON Formatter & Validator
Minified API responses and hand-written config files are hard to read as one long line. This tool reformats JSON with proper indentation, checks it's valid, and tells you exactly where a syntax error is if it isn't — all without sending your data anywhere.
What does "Minify" do?
Minify strips all whitespace and line breaks, producing the smallest possible JSON string — useful when you need to paste JSON into a URL parameter, a single-line config value, or reduce payload size.
Is my data safe?
Yes. Formatting and validation happen entirely in your browser using JavaScript's built-in JSON parser. Nothing is uploaded, logged, or stored.