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API Response Formatter – Beautify & Analyze JSON/XML Responses

Normalize JSON, XML, or raw HTTP responses with headers/status info, validation, and performance metadata for API debugging and docs.

🟢 Runs locally · no uploads

API Response Formatter

Format and validate API responses

Input JSON
Formatted Output

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› About this tool · FAQ

Format, validate, and analyze API responses including JSON, XML, and raw HTTP responses with headers, status codes, and performance metrics.

What response formats are supported?

The tool supports JSON, XML, HTML, and plain text responses. It can auto-detect the format or you can specify it manually.

Can I analyze full HTTP responses with headers?

Yes! Paste the complete HTTP response including status line and headers. The tool will parse and analyze all components separately.

How does JSON structure analysis work?

The tool analyzes JSON objects to show data types, array lengths, nested structures, and provides a schema-like overview of the response structure.

What validation features are available?

Validation includes JSON/XML syntax checking, HTTP status code analysis, header validation, and performance warnings for large responses.

Can I format responses for documentation?

Yes! The detailed format includes markdown-formatted output perfect for API documentation, with syntax highlighting and structured analysis.