Validate · view · explore
JSON viewer & validator
Paste JSON to validate it instantly, jump to errors by line, and explore the structure in a collapsible tree. Format, minify or sort keys in a click.
Input · JSON
Tree
Paste JSON to validate and explore it here.
Frequently asked questions
Why is my JSON invalid?
The most common causes are trailing commas, single quotes instead of double quotes, and unquoted keys. The error line shows where parsing failed.
Is my JSON sent anywhere?
No. It is parsed and rendered locally in your browser.
Can it handle large JSON?
Yes. It validates, formats and renders a collapsible tree entirely on the client.