Troubleshooting

The page didn't auto-format

JSONPeek formats pages served as application/json. If a site sends JSON as text/plain or embedded in HTML, open the popup and paste the JSON to format it manually — or enable auto-format for that site from the options page.

A number looks different from the raw response

It shouldn't — JSONPeek preserves large integers exactly. If a value looks changed, you're likely looking at another tool that parses through JavaScript's number type. Re-open the raw response in JSONPeek to confirm.

Converting to CSV gives an empty result

CSV needs a flat array of objects (rows). A single object, or a deeply nested structure, has no obvious columns — convert to YAML instead, or reshape the JSON into an array first.

Still stuck?

Ask on the JSONPeek product page — we read every question and publish the useful ones with our answer.