JSON Formatter & Validator
Instantly format messy JSON into readable, properly indented code. Validate JSON syntax and get clear error messages pinpointing exactly where issues are. Minify JSON to a single compact line for APIs and production use. All processing runs entirely in your browser — no data transmitted.
Updated June 2026
- 1Paste your JSON
- 2Format or validate
- 3Copy the formatted JSON
How to use the JSON Formatter
- Paste your JSON into the input box on the left.
- Click Format to pretty-print with indentation.
- Click Minify to compress to a single line.
- Copy the result with the copy button.
How to Use JSON Formatter & Validator
- 1
Paste your JSON
Drop your raw or minified JSON into the input box.
- 2
Format or validate
Click 'Format' to beautify with indentation — the tool flags syntax errors immediately if the JSON is invalid.
- 3
Copy the formatted JSON
Grab the cleaned-up result with one click.
Frequently Asked Questions
Can the JSON validator detect syntax errors?▼
What is JSON minification?▼
Is my JSON data sent to a server?▼
What JSON specification does the validator follow?▼
How to use JSON Formatter & Validator
- 1
Paste your JSON
Drop your raw or minified JSON into the input box.
- 2
Format or validate
Click 'Format' to beautify with indentation — the tool flags syntax errors immediately if the JSON is invalid.
- 3
Copy the formatted JSON
Grab the cleaned-up result with one click.
Frequently asked questions
Everything you need to know about json formatter & validator.
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