JSON Formatter - Free Online | FunToolX
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About this tool
JSON Formatter is a free online converter. JSON beautify, minify and validate tool. Convert files and values in just a few seconds. It runs entirely in your browser — no download or sign-up needed.
After pasting the JSON string, the tool automatically verifies that the syntax is correct. If correct, you can choose to beautify (add indentation and line wrapping) or compress (remove all white space) the output. The beautified version supports syntax highlighting, and key names, strings, numbers, and boolean values are distinguished by different colors. You can also switch to a tree view to expand or collapse nested objects.
JSON parsing uses the native JSON.parse, and formatting is achieved through JSON.stringify with indentation parameters. The tree view converts JSON into an interactive DOM structure, and each node can be collapsed. Click on a value to copy its JSON Path (such as data.users[0].name).
It is suitable for debugging JSON data returned by APIs, viewing configuration files, or sorting out messy JSON strings. More intuitive than the browser console and supports large files.
JSON formatting tool to beautify or compress JSON data, verify syntax correctness, and support tree views and path copying.