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JSON Formatter & Validator
Format, beautify, minify, and validate JSON instantly
Error Details
📥 Input JSON
📤 Formatted Output
0
Characters
0
Lines
0
Keys
0
Depth
0
Arrays
0
Objects
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How to use the JSON Formatter and Validator
- Paste raw JSON from an API response, a config file or a log.
- Click format to beautify, or minify to compress it for transport.
- Fix any error the validator points to; it shows the line and character.
Frequently asked questions
What errors does the validator catch?
Trailing commas, unquoted keys, single quotes, mismatched brackets and stray characters, which are the usual reasons an API rejects a payload.
Can it handle large files?
Yes, up to a few megabytes comfortably, since everything runs in your browser.
Is my data uploaded?
No. Nothing leaves your machine.