JSON Validator
Check whether JSON is valid and see the exact line, column and reason when it is not.
JSON
Runs in your browserOpen tool
Developer & Web
JSON Formatter
Format and indent JSON, or minify it, with exact error positions and big numbers kept as written.
- Runs in your browser
- Works on mobile
- In: JSON
- Out: JSON
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About JSON Formatter
Pretty-prints JSON with 2 spaces, 4 spaces or tabs, minifies it to one line, and can sort keys so two documents are easy to compare.
It uses its own parser rather than JSON.parse, for two reasons: errors come with a line, a column and a hint (trailing comma, single quotes, a missing comma), and long numeric IDs keep their exact digits instead of being rounded to 17 significant figures.
The document never leaves your browser.
How to use it
- 1Paste your JSON into the box
- 2Choose the indentation, or minify
- 3Copy or download the formatted result
Questions
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