Formatters ยท Free online tool

XML Formatter & Validator

Format and validate XML with indentation, minification, clear parse errors, and privacy-first local processing.

Quick answer: Paste XML and press Format to beautify it with nested indentation, or Minify to remove extra whitespace. Parse errors identify malformed markup before you use the result.
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How this xml formatter helps

This XML formatter and validator helps with sitemap files, RSS feeds, SOAP payloads, SVG markup, configuration files, and legacy API responses. It uses the browser XML parser to validate well-formedness, then formats nested elements with a predictable indentation style. You can minify XML for compact transport, collapse blank lines, preserve attributes, and copy the final result. When markup is invalid, the tool extracts the parser message and displays it in a readable error panel instead of silently failing. Because validation happens locally, unpublished feeds, business data, and private integrations are not transmitted anywhere. The interface is deliberately simple: one input, one output, a load-example control, recent local history, and accessible keyboard operation. It is useful when you need to inspect a response quickly, prepare a clean sample for documentation, or diagnose mismatched tags without opening a heavy XML editor.

Last updated: . All processing happens locally; no tool input is sent to a server.

Real-world examples

Check a sitemap

Paste sitemap XML and confirm every URL block is well formed before submitting it.

Read an RSS feed

Beautify a compact feed to inspect channel and item structure.

Prepare SOAP output

Minify a request envelope after checking that namespaces and tags are valid.

Frequently asked questions

What XML errors can this tool find?

It can identify well-formedness problems such as mismatched tags, invalid characters, unclosed attributes, and malformed declarations.

Does formatting change XML meaning?

Whitespace between elements is usually insignificant, but XML can define whitespace-sensitive content. Review output before using it in strict systems.

Can it validate against XSD or DTD?

No. This tool checks well-formed XML in the browser; schema validation requires a dedicated XML schema processor.

Are XML files uploaded?

No. Parsing, formatting, and minification all run locally in your browser.