XML Formatter

XML Formatter is a free online tool that format, validate, and beautify XML data with syntax highlighting. Minify or pretty-print XML instantly. Process structured data directly in your browser with no file uploads to servers.

XML Formatter workspace and controls

XML Editor

What is XML Formatter | Rune

XML Formatter beautifies, validates, and minifies XML data instantly. Essential for developers working with SOAP APIs, RSS feeds, SVG files, configuration files, and legacy data systems that rely on XML format. Handles complex data structures with nested objects, arrays, and special characters without data loss.

Supports large files with optimized parsing that processes thousands of records efficiently. Preview converted data in a formatted view before downloading or copying to your clipboard. This tool runs entirely in your browser, requiring no software downloads or installations on your device. All processing is handled locally in your browser.

XML
Standard
Instant
Formatting
Validate
& Beautify
100%
Client-Side

What Makes XML Formatter on Rune Different

XML Formatter on Rune handles beautify & minify and xml validation in a focused browser workspace. XML Formatter handles routine input directly in your browser when the workflow does not need sharing, sync, remote lookup, or external conversion. Open the page, finish the task, and copy or download the result without installing software.

XML Formatter is designed around the practical result people came for. Pretty-print XML with proper indentation or minify to a single line for production use. That alone saves time for anyone who needs quick, reliable results on a daily basis.

Key Features of XML Formatter

From beautify & minify to privacy safe, everything packed into one tool

Beautify & Minify

Pretty-print XML with proper indentation or minify to a single line for production use.

XML Validation

Instantly detect and highlight syntax errors including unclosed tags and malformed attributes.

Syntax Highlighting

Color-coded XML display distinguishes elements, attributes, text content, and comments.

Multiple Formats

Works with SOAP XML, RSS/Atom feeds, SVG files, Maven POM files, and any valid XML.

Quick Copy & Download

Copy formatted XML to clipboard or download as a file with one click.

Privacy Safe

All processing happens locally in your browser. Your XML data never leaves your device.

Key Advantages of XML Formatter

Works instantly

XML Formatter loads in your browser and is ready the moment the page opens. No setup wizard, no configuration needed.

Beautify & Minify

Pretty-print XML with proper indentation or minify to a single line for production use. This feature is available for free with no usage limits on the standard tier.

Browser-based processing

XML Formatter handles local input in your browser, so routine work stays on your device without extra setup.

Mobile and desktop ready

XML Formatter works on any screen size. The interface adapts to phones, tablets, and desktops so you can use it wherever you are.

No account needed for core use

Use the core XML Formatter workflow without creating an account or providing an email address.

Free with no hidden costs

XML Formatter is completely free on the standard tier. There are no trial periods, no watermarks on output, and no surprise paywalls after you start using it.

Who Benefits from XML Formatter

XML Formatter fits into a wide range of workflows. Here is how different users put it to work.

Students and Academics
Use XML Formatter for assignments, research papers, and coursework. Pretty-print XML with proper indentation or minify to a single line for production use.
Professionals and Teams
Integrate XML Formatter into your daily workflow for faster turnaround on routine tasks. Instantly detect and highlight syntax errors including unclosed tags and malformed attributes.
Content Creators and Freelancers
Speed up your creative process with XML Formatter. Color-coded XML display distinguishes elements, attributes, text content, and comments.
Developers and Technical Users
Add XML Formatter to your toolkit for quick utility tasks between coding sessions. Works with SOAP XML, RSS/Atom feeds, SVG files, Maven POM files, and any valid XML.

How to Use XML Formatter

Start using XML Formatter in 3 quick steps

01

Paste XML

Paste your XML data from an API response, config file, or any source.

02

Format or Validate

Click prettify to format with indentation, minify to compress, or validate for errors.

03

Copy Clean XML

Copy the formatted XML to use in your code, APIs, or configuration files.

Rune pro tipsPro Tips

  • Paste SOAP API responses to quickly inspect the XML structure and identify issues.
  • Use minify mode to reduce XML file size before embedding in API requests.
  • Validate XML before deploying configuration files to catch syntax errors early.
  • Works great for formatting SVG files to make them human-readable.

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Frequently Asked Questions

Common questions about XML Formatter, answered below

Why does my XML fail to format?

Common causes include unclosed tags, mismatched tag names, unquoted attributes, invalid characters, or multiple root elements.

How does XML validation work?

The validator checks for well-formed XML, including proper opening and closing tags, quoted attributes, valid nesting, and a single root element.

Is my XML data safe?

Yes. All formatting and validation happens in your browser. No data is sent to any server.

Can I format large XML files?

Yes, the tool handles large XML files efficiently in your browser. Very large files may take a moment to process.

Does it support XML namespaces?

Yes, the formatter preserves XML namespaces, CDATA sections, processing instructions, and comments.

What's the difference between beautify and minify?

Beautify adds indentation and line breaks for readability. Minify removes all unnecessary whitespace to create the smallest possible output.

Can it format SVG, RSS, or SOAP XML?

Yes. SVG, RSS, Atom, SOAP, Maven POM, and other XML-based formats can be formatted when the input is well-formed XML.

Can I use it for SOAP API responses?

Absolutely. Paste raw SOAP XML responses to beautify them with proper indentation, making it much easier to read and debug SOAP API payloads.

Still need help?

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