XML Formatter & Validator

Client-Side New

Paste messy XML and instantly format it with proper indentation, or minify it for production use. The tool validates your XML structure in real-time using the browser's native DOMParser, showing clear error messages for syntax issues. Configure indentation with 2 spaces, 4 spaces, or tabs. All processing happens locally in your browser.

Indent:

XML Input0 bytes

About XML Formatter

Format — Add proper indentation and line breaks for readability
Minify — Remove whitespace and comments to reduce file size
Validate — Checks XML structure and reports parsing errors
All processing happens locally in your browser — nothing is sent to any server

How to Use

1

Choose Mode

Select Format to beautify XML with indentation, or Minify to compress it.
2

Paste Your XML

Paste your XML data into the input area. The tool also validates the XML structure.
3

Process and Copy

Click the action button to format or minify. Copy the result with one click.

Examples by Niche

API Responses

Beautify a SOAP API response to inspect nested elements and attributes with proper indentation

Config Files

Format a web.config or pom.xml for readability, or minify before deployment to save space

Data Exchange

Validate and format XML data feeds from RSS, ATOM, or sitemap files for debugging

Frequently Asked Questions

Is my XML data safe?

Yes, all processing happens entirely in your browser using the native DOMParser API. No data is ever sent to our servers or any third party.

What is the difference between formatting and minifying XML?

Formatting (beautifying) adds indentation and line breaks to make XML human-readable. Minifying removes all unnecessary whitespace and comments to reduce file size for storage or transmission.

Does this tool validate XML?

Yes, the tool validates XML structure using the browser's native DOMParser. It will show a warning if the XML contains structural errors like unclosed tags or invalid nesting.

What indentation options are available for XML formatting?

You can choose between 2 spaces, 4 spaces, or tabs for indentation. Two spaces is the most common convention for XML configuration files, while 4 spaces is popular for SOAP and larger XML documents. Tabs are preferred by some teams for their configurability.

What is XML formatting?

XML formatting adds proper indentation and line breaks to make XML documents readable.

What is the difference between XML and HTML?

XML carries data with custom tags. HTML displays data with predefined tags for browsers.

Can this tool validate XML?

Yes, it checks for well-formed XML including proper closing tags and correct nesting.

What is a well-formed XML document?

One root element, properly nested tags, quoted attributes, and correct closing tags.

What is XSLT?

XSLT transforms XML documents into other formats like HTML, PDF, or other XML structures.

Is XML case-sensitive?

Yes. <Tag> and <tag> are treated as different elements in XML.

Related Tools

JSON Formatter & Validator

Format, beautify, minify, and validate JSON data instantly in your browser.

YAML Formatter & Converter

Format YAML, validate syntax, and convert between YAML and JSON bidirectionally.

CSS Minifier

Compress CSS by removing whitespace and comments with file size reduction stats.

HTML Formatter

Beautify or minify HTML with configurable indentation and proper tag nesting.

SQL Formatter

Format SQL queries with proper indentation, uppercase keywords, and syntax highlighting.

Markdown Preview

Write Markdown with a live side-by-side preview supporting GitHub Flavored Markdown.