JSONP to JSON Converter

You opened an old API endpoint in the browser and got back something like callback({...});. That is JSONP: JSON wrapped in a function call, the trick everyone used to dodge the same-origin policy before CORS existed. No JSON parser will touch it, so pasting it into a validator fails on the very first character. Paste the whole response here and you get just the payload back.

The tool matches the entire input against the pattern name(content), with an optional trailing semicolon, and returns whatever sits between the first and the last parenthesis, trimmed. Callback names may contain letters, digits, underscores, dollar signs and dots, so a response shaped like angular.callbacks._0({...}) works fine. When nothing matches you get a not-recognised message rather than a wrong answer.

Two practical notes. Google APIs tend to prefix the body with a /**/ comment, and that prefix breaks the match, so delete it before pasting. The payload comes out as raw text with no validation and no reindenting, so if the call carries more than one argument you get all of them, comma separated. The page is just the two boxes, and everything runs in your browser.