The JSON Formatter & Validator is a fast developer utility designed to parse, prettify, minify, and validate JSON (JavaScript Object Notation) data structures (RFC 8259). It detects syntax errors, highlights mismatched brackets or missing commas, and formats raw API responses into indented structures for effortless debugging.
Instantly identifies invalid JSON syntax, highlighting line numbers and error details.
Format with 2 or 4-space indentation for human readability or minify to single-line JSON for optimized network payloads.
Paste raw JSON from API responses, configuration files, or database queries.
Click "Format JSON" to beautify with structured indentation or "Minify" to strip whitespace.
Check the validity indicator and copy clean, formatted JSON with one click.
The RFC 8259 JSON standard strictly requires double quotes (") for string keys and values. Single quotes (') are invalid in standard JSON.
Yes. All parsing and formatting occur client-side in your browser JavaScript engine without transmitting data over the internet.