JSON Formatter & Validator
Format, minify, validate, and beautify JSON data instantly
Format, minify, validate, and beautify JSON data instantly
Follow these simple steps to format, validate, or minify your JSON data
Copy your raw JSON string and paste it into the Input text area on the left. You can paste minified JSON, malformed JSON, or even JSON with comments ? the formatter will detect and highlight any issues.
Click Format / Beautify to prettify your JSON with 2-space indentation. Use Minify / Compress to remove all whitespace for production. Click Validate to check if your JSON is valid and see its structure summary.
The formatted result appears in the Output panel on the right. You will see a status message confirming whether the JSON is valid, along with character savings when minifying.
Trailing commas, missing quotes around keys, and single quotes are the most common JSON errors.
All processing is client-side. Files up to several megabytes work well; extremely large files may cause browser lag.
Your JSON data never leaves your browser. No data is uploaded to any server.
jq or python -m json.tool.In modern software development, JSON has become the universal language of data exchange. From REST APIs to configuration files, NoSQL databases to frontend state management ? JSON is everywhere. But raw JSON from production systems is almost always minified: a single compressed line with no whitespace, designed for machine efficiency rather than human readability.
Our JSON Formatter bridges the gap between machine-optimized data and human-friendly presentation. By adding proper indentation, line breaks, and structural clarity, formatted JSON becomes readable, debuggable, and editable.