Your JSON broke. This tells you which line and what was expected.
Paste a URL or a blob of JSON. Jsonreveal parses it and, when it fails, points at the exact line and column and says what was expected there in plain language — not "unexpected token at position 4471". For URLs it also reports what the server actually sent: the content-type, whether the body is JSON at all, and whether it is a JSON error object dressed as a success.
Paste JSON
Paste any JSON blob. Parsed entirely in your browser — nothing is sent to any server. On failure, the exact line and column are displayed with the expected token and surrounding context, so you can fix the error immediately.
Fetch URL
Enter a URL and the tool fetches it server-side. It reports the response status, content-type, whether the body parses as JSON, and flags API error objects masked as successful responses.
One tool, two modes
Whether you are debugging a malformed API response or hunting for a trailing comma in a config file, Jsonreveal tells you exactly where the problem is.
Open the tool