API Response Formatter
Paste any raw API response. Auto-detects JSON or XML and prettifies for readability. Everything runs in your browser.
What is the API Response Formatter?
The API Response Formatter auto-detects whether a pasted response body is JSON, XML or plain text, then pretty-prints it with syntax highlighting. One paste — no switching between separate formatters.
Processing is client-side, so production responses containing tokens or user data stay on your machine.
How to use the API Response Formatter
- 1Paste the raw response body into the input area.
- 2Let the tool auto-detect the type, or force one with the dropdown.
- 3Adjust indentation, then copy or download the formatted output.
Key features
- Auto-detection of JSON and XML
- Syntax highlighting on the output
- Reports common structural errors
- Copy and download buttons
Frequently asked questions
What formats are supported?
JSON, XML and plain text.
Can it handle very large responses?
Yes — multi-megabyte payloads work on desktop browsers.
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