XML Formatter & Validator

Check XML syntax, create readable indentation, or compact a document.

Runs locally in your browser

IndentMinify

Waiting for input

XML input0 characters

Processed XML

Formatted XML will appear here.

Complete tool guide

XML Formatter & Validator guide

The XML formatter parses a document with the browser XML parser, rejects malformed markup, and serializes valid XML into readable or compact form.

Your input is processed in the current browser tab and is not sent to the application server.

Why use this tool?

Inspect or transform developer data without installing another utility.
Copy a clean result directly into code, a terminal, an API client, or documentation.
Keep routine developer work in one fast, consistent interface.

Common use cases

Inspecting SOAP or XML API responses
Cleaning configuration and manifest files
Checking tags, attributes, and nesting before committing a file

How to use it

1
Paste a complete XML document.
2
Use the validation message to locate malformed markup.
3
Choose readable indentation or minified output.
4
Copy or download the result.

Well-formedness

Each element must close correctly, attribute values must be quoted, and the document must have one root element.

Namespaces

Namespace declarations and qualified names are preserved by the browser XML serializer.

Validation scope

This checks XML syntax. It does not validate the document against an XSD, DTD, or application-specific schema.

Practical tips for better results

Use two-space indentation for compact files and four spaces for manual review.
Treat minification carefully when mixed text content depends on whitespace.
Use an XSD validator when the document must conform to a formal vocabulary.

Frequently asked questions

Does the XML Formatter & Validator upload my data?

No. The transformation runs locally in your browser. Avoid pasting secrets into any tool you do not control, and clear the fields when using a shared device.

Can I use the result in production?

You can copy or download the result, but review it in the context of your application and run the project-specific tests or validation required by your workflow.

Keep working

Continue with another focused tool from the same collection.

JSON Formatter & ValidatorValidate, beautify, minify, and recursively sort JSON data.YAML Formatter & ValidatorParse strict YAML, report syntax problems, and produce consistently indented output.HTML FormatterFormat or compact HTML markup with a syntax-aware browser parser.CSS FormatterFormat or compact CSS stylesheets and surface invalid syntax.