This online XML formatter and validator beautifies XML code with proper indentation and validates syntax errors.
Quickly format XML and validate XML syntax in your browser with no server upload.
XML (eXtensible Markup Language) is a markup language designed to store and transport data. It defines a set of rules for encoding documents in a human-readable and machine-readable format. XML is commonly used in configuration files, web services (like SOAP), RSS feeds, and API responses.
Raw XML can be difficult to read and manage, especially when it's minified or lacks indentation. An XML formatter helps to organize your XML code with proper spacing and structure. It enhances readability, makes debugging easier, and ensures consistent formatting across files and projects.
Using this online tool is easy. Simply paste your XML code into the editor, and click the "Format & Validate" button. The tool will automatically beautify your XML with proper indentation and check it for syntax errors based on W3C XML standards. No server upload is required — all processing is done directly in your browser.
Our XML formatter is designed with performance, privacy, and usability in mind. Unlike other online tools, it processes data entirely on the client side, ensuring speed and security. Key features include syntax highlighting, error detection, customizable indentation, clipboard copy, download functionality, and support for sample XML input.
Is this XML formatter free?
Yes, it's completely free to use with no registration required.
Do you store my XML data?
No, all processing is done locally in your browser. Nothing is sent to our servers.
Can I format large XML files?
Yes, the tool supports large XML documents, depending on your browser's memory limits.
Does the tool validate my XML?
Absolutely. It checks your XML for syntax errors and structural validity in real time.
XML beautification is the process of reformatting XML code with consistent indentation and line breaks. Our tool analyzes the structure of your XML, identifies nested elements, and adjusts spacing based on your preferences. This makes it easier to understand complex documents, identify errors, and maintain code consistency.
Unlike manual formatting, which is time-consuming and error-prone, our formatter uses a reliable parser to analyze and restructure your data automatically. It also highlights opening and closing tags to help developers spot mismatches or incomplete blocks.
The built-in XML viewer provides a structured display of your XML code. You can expand and collapse nodes for better navigation, and search for specific elements or attributes. Syntax highlighting improves readability by visually distinguishing tag names, attributes, and values.
For large XML files, the viewer allows horizontal and vertical scrolling with clear visual alignment. You can also compare raw and formatted versions side-by-side to understand the impact of formatting changes.
This XML formatter is widely used by backend and frontend developers, system integrators, DevOps engineers, QA testers, and students. Whether you're working with configuration files, XML-based APIs (SOAP, REST with XML payload), or data feeds like RSS and Atom, this tool can save hours of manual work.
It's also helpful when debugging XML returned from third-party services or when converting exported data into a readable format. If you're building or testing an XML schema (XSD), proper formatting ensures easier structure validation.
Yes. This tool is built with privacy and security in mind. All formatting and validation happen locally in your browser using JavaScript. Your data never leaves your computer, and there are no background uploads or storage.
This approach not only protects your data, but also delivers better performance — even with large XML documents. No registration, no ads, and no tracking. Just clean, fast formatting.
With dozens of XML tools available online, DevTools XML Formatter stands out for its speed, simplicity, and privacy. It's a 100% free, ad-free tool built by developers for developers. We believe in lightweight, distraction-free utilities that just work.
Whether you need to format XML once or dozens of times a day, our tool provides a clean, focused environment to get the job done without hassle. It's part of a growing suite of web-based DevTools designed to help developers solve common tasks quickly and securely.
After formatting your XML, you can instantly copy the result to your clipboard or download it as a `.xml` file. This is especially useful when working with large datasets, sharing formatted code with teammates, or preparing files for production.
You can also paste sample XML from our predefined examples to test formatting behavior and understand how the tool handles different XML structures.
To deepen your understanding of XML and its applications, here are some valuable external resources: