TEXT & DATA TOOL · .JSON
Format and validate JSON
Paste in JSON to validate it, beautify it with proper indentation, or minify it down to a single line.
How it works
- Paste your JSON.
- Choose Format to beautify, or Minify to compress it to one line.
- Copy or download the result.
Frequently asked questions
What happens if my JSON is invalid?
You'll see a clear error message describing what's wrong, based on your browser's own JSON parser.
Can I choose the indentation?
Yes — pick 2 spaces, 4 spaces, or tabs from the dropdown before formatting.
Does this validate against a schema?
No, only that the JSON syntax itself is well-formed — it doesn't check structure against a schema.
Is my data uploaded anywhere?
No — formatting and validation both happen locally using your browser's built-in JSON parser.