Free Online XML Formatter — Pretty Print, Validate & Minify
Pretty print XML, validate it with clear errors, or minify it. Works with SOAP, RSS, SVG, sitemaps, and config files.
Quick answer
To format XML, paste it into the KaviForge XML Formatter. It is validated and pretty-printed instantly with nested elements indented. If the XML is malformed, a clear error explains what is wrong. Click "Minify" to remove whitespace and comments.
Pretty print, validate, and minify XML in your browser. Use it on SOAP responses, RSS feeds, SVG, sitemaps, and config files without uploading.
This formatter parses your document with the browser’s XML parser, so it doubles as a validator — well-formedness errors like unclosed tags or bad attribute quoting are reported immediately.
Related reading: JSON vs. XML: The Ultimate Showdown (What's the Difference and When to Use Each), What is JSON Formatting (Pretty-Printing) and Why Does It Matter?, and How to Validate JSON: 5 Ways to Check for Errors.
How to Format XML
- 1Paste your XML into the input box, or upload an .xml, .svg, or config file.
- 2Choose 2 spaces, 4 spaces, or tabs for indentation.
- 3Read the pretty-printed XML, or fix the error shown if the XML is invalid.
- 4Click "Minify" to compress the XML to a single line.
- 5Copy the result or download it as formatted.xml.
Features
Pretty Print XML
Consistent indentation for nested elements with inline text kept compact.
XML Validation
Detects malformed XML and shows the parser’s error message.
Minify XML
Strips whitespace and comments for compact payloads.
Keeps Declarations & CDATA
Preserves the XML declaration, CDATA sections, comments, and processing instructions.
File Upload & Download
Open XML, SVG, RSS, XSD, and config files.
Private
Your XML is processed in your browser only.
When to Use the XML Formatter
Debug SOAP and XML APIs
Format request and response envelopes to read them easily.
Check sitemaps and RSS feeds
Validate that your sitemap.xml or feed is well-formed before submitting it.
Clean up SVG files
Pretty print exported SVG markup to edit paths and attributes by hand.
Edit config files
Format pom.xml, web.config, AndroidManifest.xml, and similar files.
About the XML Formatter
The formatter parses XML with DOMParser and re-serializes the document tree with your chosen indentation, escaping special characters correctly.
Validation checks that the XML is well-formed (properly nested and closed). It does not validate against an XSD or DTD schema.
XML Formatter FAQs
How do I pretty print XML online?
Paste the XML into the KaviForge XML Formatter. It is indented and displayed instantly.
How do I validate XML?
Paste it into the formatter. If the XML is not well-formed, an error message describes the problem and where it occurs.
How do I minify XML?
Click "Minify" to remove indentation, line breaks, and comments.
Does it validate against an XSD schema?
No. It checks well-formedness only, not schema rules.
Can I format SVG or RSS files?
Yes. SVG, RSS, Atom, sitemaps, and any other XML-based format can be formatted.
Is my XML uploaded?
No. Parsing and formatting happen entirely in your browser.
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Related Guides & Tutorials
JSON vs. XML: The Ultimate Showdown (What's the Difference and When to Use Each)
JSON vs XML and XML vs JSON: key differences, use cases, and when to send a JSON payload. Convert either way with our free converter.
What is JSON Formatting (Pretty-Printing) and Why Does It Matter?
Learn what JSON formatting (pretty-print) is and when to minify JSON instead. Pretty print a JSON payload instantly with our free formatter.
How to Validate JSON: 5 Ways to Check for Errors
Learn 5 ways to validate JSON and catch syntax errors fast. Paste a JSON payload into our free validator and check it in one click.