Make raw API responses readable before debugging them.
Developer utility
Format JSON Instantly
Paste raw JSON, clean up the structure, and turn dense API payloads into readable output in seconds.
Tool focus
Format and validate JSON
Input JSON
Paste a valid JSON object or array to format it with clean indentation.
Formatted output
Run the formatter to see output here.
Formatted JSON will appear here.
Why use a JSON formatter?
A JSON formatter turns compressed or messy JSON into something much easier to read. That is useful when you are debugging APIs, checking config output, or comparing nested objects that are hard to scan in their raw form.
This formatter is useful when you want to:
Check whether JSON is valid before using it elsewhere.
Clean up nested payloads copied from logs or tools.
What formatting changes
Formatting does not change the underlying JSON data. It only adds whitespace and indentation so the structure becomes easier to read. That can make nested objects, arrays, and repeated keys much easier to inspect when you are debugging data from an API or script.
Why readability matters
Unreadable JSON slows down debugging. Even valid payloads can be hard to scan when everything is packed into one long line. A formatter helps you move faster by making the hierarchy obvious, which reduces the chance of missing a key, array item, or structural problem.
When this page is the right tool
Use this page when you already have JSON and want a quick cleanup step. If the output formats cleanly, you can move on to inspecting values. If it fails, the error message becomes your next clue about where the JSON structure went wrong.
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