What are the most common JSON errors?

A trailing comma after the last item, single quotes instead of double quotes, unquoted keys and comments. JSON allows none of these.

Does sorting keys change my data?

Only the order of object keys changes. Arrays keep their order because their order is meaningful.

Is my data sent to a server?

No. Everything is processed in your browser, which matters when the input is a production payload, token or query. Nothing is uploaded, logged or stored.

JSON Formatter and Validator - Free Online Tool

JavaScript is turned off. InspireTools processes files in your browser, so the tools need JavaScript to run.

Format, validate and minify JSON, with exact error positions.