Quick Summary
JSON Formatter & Beautifier is an in-browser utility for formatting minified JSON payloads with 2-space indentation, validating syntax errors, and stripping whitespace with zero server data logging.
JSON Formatter, Beautifier & Validator
Pretty-print minified JSON code into structured, human-readable text with syntax validation and instant tree rendering.
Instant pretty-printing
Converts compact single-line JSON into clean, indented code blocks with proper key/value syntax formatting.
Syntax validation
Detects and highlights syntax parse errors with exact line and character position indicators.
100% client-side security
Process confidential production credentials, JWTs, and API tokens safely inside your local browser RAM.
Frequently asked questions
How do I format JSON online?
Paste your minified or unformatted JSON code into the editor pane and click 'Format' (or press Alt+3). The tool formats your JSON with proper 2-space indentation.
Does this JSON formatter validate syntax errors?
Yes! If your JSON contains invalid syntax (such as trailing commas, unquoted keys, or missing brackets), the formatter highlights the exact location of the error.