Free Online Tool

XML Formatter & Beautifier — Pretty Print XML Online

Turn minified or messy XML into clean, indented, readable markup in one paste. Validate the document, fix errors fast, then copy, download or minify it again — all inside your browser.

Instant pretty print100% private, no uploadsValidate & minify

XML Input

Indent

Formatted XML Output

Your beautified XML will appear here with clean indentation...

Quick answer: how do I format XML online?

Paste your XML above or upload an .xml file. This free XML formatter validates the document with the browser XML parser, pretty prints it with 2 or 4 space indentation, and lets you copy, download or minify the result. Everything runs in your browser — no signup and nothing is uploaded to a server.

How to Beautify XML in 3 Steps

1

Paste or upload your XML

Drop in a SOAP response, RSS feed, sitemap, SVG or pom.xml — anything well-formed works.

2

Read the validation result

Mismatched or unclosed tags are reported with the exact parser message so you can fix them fast.

3

Copy, download or minify

Take the indented version for review, or minify it again before sending it over the wire.

XML Formatter vs. Minifier vs. Validator

All three jobs are handled on this page. Here is when to reach for each one.

TaskWhat it doesBest forOutput size
Beautify / pretty printAdds indentation and line breaks per nesting levelDebugging API responses, code review, documentationLarger
MinifyRemoves whitespace between nodesSOAP requests, feeds, storage and bandwidth savingsSmaller
ValidateParses the document and reports well-formedness errorsFinding mismatched tags, bad entities, broken encodingUnchanged

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XML Formatter FAQs

An XML formatter (also called an XML beautifier or XML pretty printer) takes minified or badly indented XML and rewrites it with consistent indentation and line breaks, so nested elements, attributes and text nodes are easy to read and review.

Paste your XML into the input box or upload an .xml file. The tool instantly validates the document and prints a formatted version with 2-space indentation that you can copy, download or minify again. No signup and no usage limits.

Yes. Every time you format, the document is parsed with the browser XML parser. If a tag is unclosed, mismatched or an entity is invalid, you get the parser error message describing what broke instead of silently wrong output.

No. All parsing, formatting, validating and minifying happen locally in your browser with JavaScript. Your XML never leaves your device, which makes the tool safe for SOAP payloads, invoices, configuration files and other sensitive documents.

Formatting adds indentation and line breaks for humans. Minifying strips whitespace between tags to shrink payload size for transport or storage. This tool does both, so you can read a document and then compress it again before sending it.

Yes. Large documents render inside a pane with both vertical and horizontal scrolling, so long attribute lists and deeply nested nodes never break the layout. Files up to roughly 10 MB format comfortably in a modern browser.

That error means a closing tag does not match the nearest open tag, usually a typo or a missing closing element. The validator reports the line and column so you can jump straight to the mismatch and correct it.

Yes. The XML declaration, DOCTYPE, comments and CDATA blocks are preserved exactly as written; only whitespace between nodes is changed, so the document stays semantically identical.

Once the page is loaded, formatting runs entirely in local JavaScript, so it keeps working even if your connection drops.

Any well-formed XML: SOAP envelopes, RSS and Atom feeds, sitemaps, SVG, Android layouts, Maven pom.xml, Microsoft Office XML parts, SEPA and other financial messages, and plain configuration files.

Free online XML formatter and beautifier. Paste or upload XML to pretty print, validate and minify instantly with error messages. 100% browser-based, no signup.

Tool
XML Formatter & Beautifier
Category
All tools
Availability
Browser-based tool