API Response Formatter
Format raw JSON or XML API responses for easy reading and debugging. Auto-detects format.
About API Response Formatter
Working directly with APIs often means staring at long, minified responses copied out of a browser network tab or a curl command. This API response formatter accepts raw JSON or XML and produces a clean, indented, syntax-aware view that is actually readable. It handles malformed responses gracefully โ surfacing the exact location of any parsing error โ and provides a structural overview of nested objects so you can navigate the data quickly.
Typical workflows include inspecting unexpected responses during integration work, sharing readable response samples in bug reports or code reviews, and comparing the shape of staging versus production API output. All parsing happens locally, so confidential responses containing auth tokens or user data are never sent to a third party.
How to Use
Paste the raw API response (JSON or XML) into the input box.
The tool auto-detects the format, or you can select it manually.
Choose your preferred indentation level.
Click 'Format' to beautify or 'Minify' to compress. Copy the result.
Frequently Asked Questions
What formats are supported?
This tool supports JSON and XML API responses. It auto-detects the format based on the first character of your input.
Can I use this for debugging API calls?
Yes! Paste the raw response from your API client (Postman, curl, fetch) and this tool will format it so you can read and analyze the data structure easily.
Does this validate the response?
Yes. Malformed JSON will show a parse error with details. Invalid XML is validated using the browser's DOMParser and will show what went wrong.
Is my API data sent to any server?
No. All formatting happens in your browser. Your API responses never leave your device.

API Response Formatter: Format JSON & XML API Responses Online
Raw API responses are often a wall of unreadable text. Format JSON or XML responses instantly with auto-detection โ your debug sessions just got faster.
Read the full guide