JSONView

View JSON documents in the browser.

Normally when encountering a JSON document (content type - application/json), the browser simply shows plain text. With the JSONView extension, JSON documents are formatted, highlighted, and arrays and objects can be collapsed. Even if the JSON document contains errors, JSONView will still show the raw text.

Once you've got JSONView installed, check out http://jsonview.com/example.json to see the extension in action!