JSON Validator
Validate JSON and pinpoint syntax errors.
This free JSON validator checks your JSON the instant you type — no button to press. Valid JSON is confirmed and pretty-printed with your choice of indentation, alongside a stats bar showing byte size, key count and nesting depth. When there is a syntax error it reports the exact line and column and shows a few surrounding lines with a caret pointing directly at the offending character, so you find the problem in seconds. The editor has a line-number gutter for easy cross-referencing. Need to repair broken JSON (trailing commas, comments, single quotes)? Use the JSON Formatter's Auto-fix.
Related tools
JSON Formatter
Format, beautify & validate JSON data.
Base64 Encoder / Decoder
Encode and decode Base64 text instantly.
URL Encoder / Decoder
Percent-encode and decode URLs safely.
Regex Tester
Test regular expressions with live match highlighting.
JWT Decoder
Decode JWT header and payload claims.
Timestamp Converter
Convert Unix timestamps to dates and back.