JSON Formatter & Validator

Formatting changes how the text looks by adding indentation and line breaks. Validating checks whether the text follows the JSON rules at all. This tool does both in one pass, so you see clean output when the JSON is valid and an error message with a line number when it is not.

JSON has strict rules. Keys need double quotes, strings cannot use single quotes, and the last item in an object or array cannot end with a comma. The validator reports the line, column and position of the first problem it finds. Fix that spot, format again, and check whether a new error appears further down.

Yes. Turn on Sort keys to arrange every object alphabetically, which makes two versions of the same file easier to compare. Turn on Remove null / empty to drop keys that hold null or empty values. Both switches change the output you copy or download, so check the result before you save it.

Switch the output to Compact. The tool strips every space and line break and gives you a single line that you can copy or download. Minified JSON weighs less over the network, so use it when you ship a payload. Switch back to an indent size when you need to read or edit the data.

No. The formatter and validator run in your browser, and the page sends no request with your data. That matters when your JSON holds customer records, tokens or internal settings. The tool keeps your last five inputs in memory while the page stays open, and it forgets them when you close or reload it.

Type the path in the Find Value box. Dot notation such as project.owner.name works, and so does a path that starts with a dollar sign, like $.settings.theme. The tool shows the value it finds, or tells you the path does not exist, so you can check a single field without scrolling.