API Response Formatter
Beautify a raw API response — paste a full HTTP response and the status, headers and body are split out and the body pretty-printed (JSON/XML/HTML), with a live preview.
About this ToolHow it works, benefits & use casesTap to collapse
Paste a raw API response and this formatter splits it into the parts you care about and pretty-prints the body. If you paste a full HTTP response — status line, headers, blank line, then body — it pulls out the status code (colour-coded by class) and lists every header in a table, then beautifies the body on its own. The body type is auto-detected as JSON, XML, HTML or plain text, or you can force a format. JSON is re-indented with 2, 4 or 8 spaces or a tab, can have its keys sorted alphabetically, or be minified to strip whitespace. A summary reports the detected type, byte size and line count, and for JSON adds the root type, total key count and maximum nesting depth. Parse errors come back with a message and a snippet so you can find the problem. The full state is captured in a shareable URL.
How to Use
- 1Paste a raw body, or a full HTTP response (status line + headers + blank line + body), into the API response panel.
- 2Choose a Format — Auto-detect, JSON, XML, HTML, or Plain text — and an Indentation of 2, 4, 8 spaces, or Tab.
- 3Toggle "Sort JSON keys" to alphabetise object keys, or "Minify" to strip whitespace instead of beautifying.
- 4Click "Format response"; the status badge and header table appear above, and the pretty-printed body below.
- 5Read the stats line for detected type, size, lines and (for JSON) root, keys and depth, then copy, download, or share the result.
Key Benefits
- Splits a full HTTP response into a colour-coded status badge, a header table, and the body
- Auto-detects JSON, XML, HTML or plain text, or lets you force the format
- JSON beautify with 2/4/8-space or tab indentation, optional alphabetical key sorting, or minify
- Stats summary: detected type, byte size, line count, plus JSON root type, key count and max depth
- Clear parse errors with a message and an offending-snippet preview
- Header-only responses are handled gracefully (shows the headers, notes no body)
- Shareable URL captures input, format and options; runs entirely in the browser
Common Use Cases
- Making a one-line API response readable to inspect a value while debugging
- Pasting the raw output of curl -i to separate the status, headers and JSON body at a glance
- Confirming an endpoint returned the status code and content type you expected
- Sorting JSON keys before diffing two responses so unrelated ordering does not noise up the diff
- Minifying a beautified body back down before pasting it into a test fixture
Formatting options
Strip whitespace instead of beautifying
Paste a raw body or a full HTTP response (status line + headers + body)
Run to see the formatted result.
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Yes. If the input begins with a status line and headers (as you get from curl -i or a captured response), the tool extracts the HTTP version, status code and text, lists all headers in a table, and pretty-prints only the body below. A plain body works too — it is simply detected and formatted.
Auto-detect inspects the body and chooses the most likely format, surfacing it as the "Detected" value in the stats line. If detection guesses wrong, switch the Format dropdown to JSON, XML, HTML or Plain text to force the formatter to treat the body that way.