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What is JSON?

JSON (JavaScript Object Notation) is a minimal, readable format for structuring data. It is used primarily to transmit data between a server and web application, as an alternative to XML. Squarespace uses JSON to store and organize site content created with the CMS.


JSONLint is a web based free online JSON code formatter and validator tool, built for the developers. JSON code is not easy to interpret, as they have bunch of unformatted lines of code.

Hence, to overcome the complexity of interpretation, we have made this free tool to let you do both format your JSON code to proper indented form as well as validate the JSON code.


  • What is JSONLint.in?

    It's a tool to validate and format your ugly JSON data.
  • Why do I need this?

    Because complex ugly data is not normally readable by human being. This tool will help you to format it and make it understandable. Also you can validate your JSON data here.
  • How would I know if my JSON is not valid?

    If there's any error in your JSON data then this tool will throw descriptive error so you can solve it easily.

How to Use JSONLint?