XML Formatter — Free Online XML Beautifier, Pretty Print & Validator

XML Formatter — Free Online XML Beautifier, Pretty Print & Validator. Free online XML formatter and beautifier.

Pretty print XML with custom indentation, validate it with line-and-column error messages, remove comments, upload a file and download the result — 100% in your browser.

Our free XML formatter turns minified or messy markup into clean, indented, readable XML in real time.

Paste an API response, a SOAP envelope, an RSS feed, a Maven pom.xml, an Android layout or any configuration file and the XML beautifier re-indents every element with 2 spaces, 4 spaces or tabs.

Keep short text content on the same line as its tag or expand it onto its own line, strip comments, and choose between and for self-closing elements.

The XML declaration, CDATA sections and attribute values are preserved exactly, so the XML pretty print output is safe to paste back into your project. Every input is checked by a built-in XML validator before it is formatted.

Instead of a vague "invalid XML" message, you see exactly what is wrong and where — a mismatched closing tag, an element that is never closed, a second root element, an unclosed comment or CDATA block — with the line and column of the problem.

When the document is well formed, the XML checker shows the number of elements, attributes and comments, the maximum nesting depth and the size before and after formatting.

Upload an .xml, .xsd, .svg or .config file, copy the result or download it as formatted.xml. All parsing and formatting happens locally in your browser, so internal configs, customer data and API payloads are never uploaded.

Share a link that restores your XML and formatting options. Need the opposite? Compress markup to a single line with the XML Minifier. Convert data between formats with XML to JSON and JSON to XML, or tidy web markup with the HTML Formatter.

Frequently asked questions

How do I beautify or pretty print XML?

Paste your XML into Your XML, or click Upload file to open an .xml, .xsd, .svg, .rss, .config or similar file. The formatted version appears below instantly; click Copy, or Download to save it as formatted.xml.

How do I change the XML indentation and formatting options?

Set Indent size from 0 to 10 spaces (2 by default) or turn on Use tabs. Collapse content keeps elements that contain only text on one line, Remove comments strips all comments, and Space in self-closing tags adds a space before the closing slash of empty tags.

How do I validate XML and find the error?

Validation runs as you type. Well-formed input shows Valid XML; otherwise a message explains the problem with its line and column, for example a mismatched closing tag, an element that is never closed or a second root element.

What do the XML statistics show?

For valid XML the tool counts elements, attributes and comments and shows the maximum nesting depth and the document size, which helps you understand large files at a glance.

Is my XML sent to a server?

No. Formatting and validation run entirely in your browser, so configuration files, API responses and SOAP messages stay on your device.

How to use this online tool

XML Formatter — Free Online XML Beautifier, Pretty Print & Validator is designed for fast browser workflows when you need to format, validate, convert, decode, encode, generate, or inspect data without opening a heavy desktop app. Start with the input field or visible options, review the result, then copy or download the output for the next step.

Private processing in your browser

XML Formatter — Free Online XML Beautifier, Pretty Print & Validator keeps the normal processing step local in your browser. That is useful for code snippets, tokens, documents, configuration values, text samples, and other material that should not be sent to a remote service unless you explicitly choose to share it.

When this tool is useful

Use XML Formatter — Free Online XML Beautifier, Pretty Print & Validator for repeatable developer tasks, technical documentation, QA checks, quick conversions, debugging, content cleanup, and internal team workflows. The page focuses on clear inputs, immediate feedback, and output that is easy to reuse in code, reports, tickets, emails, or notes.

Practical tips

Before copying the final result, check important details such as spacing, casing, filenames, encoding, token structure, line breaks, or output format. Small checks prevent mistakes when the result is reused in source code, API requests, documentation, spreadsheets, or shared files.