JSON Formatter & Key Sorter
Pretty-print JSON and sort keys alphabetically
This tool takes minified or messy JSON and lays it out cleanly with proper indentation and line breaks. Developers, or anyone who has to read through an API response, can also sort keys alphabetically (with recursive and reverse options) to compare and understand data structures at a glance. Everything is processed inside your browser, so your data is never sent to a server.
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🔒 Everything runs 100% in your browser. Your files and input are never uploaded to any server.
How to use
- Paste the JSON you want to clean up into the input box on the left.
- Choose your indentation (2 spaces, 4 spaces, or tabs).
- If you need it, turn on Sort keys alphabetically and set the options for sorting nested objects recursively or in reverse (Z-A) order.
- Grab the formatted JSON from the output pane with the copy button.
FAQ
- What happens if my JSON is invalid?
- If the syntax is wrong, you'll get an error message pointing out what went wrong, and no output is produced until the error is fixed.
- Does it sort values inside arrays?
- Key sorting only applies to object properties; the order of an array itself is never changed. With the recursive option on, the keys of objects inside an array are each sorted.
- Is my data sent anywhere?
- No. All parsing, sorting, and formatting happens entirely in your browser and nothing is transmitted to a server.