How to Format and Validate JSON (and Fix the Errors You'll Actually Hit)
Why unreadable JSON is a daily problem Every API response, config file and log line is JSON. Minified, it is a single wall of characters; pretty-printed, the same data becomes something you can scan in two seconds. The data is identical — only the whitespace differs — which is why “formatting” is one of the most common developer searches on the web. This guide covers what formatting actually does, how validation works, and the handful of errors responsible for almost every “invalid JSON” message you will see. ...