Free Explain My JSON
A plain-English breakdown of any JSON.
Runs locallyNo uploadPrivate
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About the Explain My JSON
Free JSON explainer. Paste any JSON and get a plain-English structural breakdown — root type, every field and its type, array sizes and nesting depth — or a clear reason why it's invalid. Runs in your browser.
How it works
- 1
Paste JSON
Any object or array.
- 2
Read the outline
Types, fields, sizes and depth.
- 3
Fix errors fast
Clear messages when it's invalid.
Frequently asked questions
Yes. If the JSON is invalid it shows the parser error and the most common causes, like trailing commas or single quotes.
No. It's parsed and explained entirely in your browser — nothing is uploaded.