Formateador XML Gratuito en Línea
Formatea y valida XML con sangría y resaltado de sintaxis.
Frequently Asked Questions
Why is my XML showing a parse error?
Common XML errors: unclosed tags (every opening tag must have a closing tag), multiple root elements (XML allows only one root), special characters not encoded (& → &, < → <, > → >), and attribute values not quoted.
What is the difference between XML and JSON for APIs?
JSON is lighter, easier to parse in JavaScript, and more widely adopted for REST APIs. XML is more verbose but supports schemas (XSD), namespaces, and attributes — still dominant in SOAP web services, RSS/Atom, Office documents, and some enterprise APIs.
What are XML namespaces?
Namespaces prevent element name conflicts when combining XML from different sources. Declared as: xmlns:prefix="URI" on an element. Example: <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">. The prefix is just a local alias for the full URI.
What is the difference between XML attributes and child elements?
Attributes (name="value" inside a tag) are for metadata about an element. Child elements are for content and structured data. General guideline: use attributes for simple scalar values, child elements for complex or repeatable data.
Can I validate XML against a schema (XSD)?
The formatter validates XML well-formedness. For schema validation against an XSD, paste both the XML and XSD into the Schema Validator tab. XSD validation checks data types, required elements, and cardinality constraints.
Is the Formateador XML free to use?
Yes, the Formateador XML on Allio Tools is completely free with no sign-up or registration required. It works directly in your browser.
How does the Formateador XML work?
Formatea y valida XML con sangría y resaltado de sintaxis. No data is sent to a server — everything runs locally in your browser for maximum privacy and speed.
Do I need to install anything to use the Formateador XML?
No installation needed. The Formateador XML runs entirely in your web browser on any device — desktop, tablet, or mobile.
Is my data safe when using the Formateador XML?
Completely safe. The Formateador XML processes everything locally in your browser. No input data, results, or usage information is ever transmitted to or stored on any server.
Does the Formateador XML work offline?
After the page loads for the first time, the Formateador XML works without an internet connection for all client-side processing. Tools that fetch live external data (such as DNS or network lookups) require an active connection.
Can I use the Formateador XML output in commercial projects?
Yes. The Formateador XML is a utility tool and its output carries no licensing restrictions. You are free to use results in any project, commercial or personal.
Does the Formateador XML follow official standards?
Yes. The Formateador XML is built to comply with the relevant industry standard or specification for this utility type. If you encounter an unexpected result, verify your input against the specification — edge cases outside the standard may produce undefined behaviour.
Does the Formateador XML work on all browsers?
Yes. The Formateador XML is built with standard browser APIs and works on all modern browsers including Chrome, Firefox, Safari, and Edge — on both desktop and mobile. No plugins, extensions, or third-party software are required.
How do I save or export my results from the Formateador XML?
Select and copy the result text to paste into any document or app. For image tools, a Download button saves the file directly to your device. Your browser's built-in screenshot function also captures results quickly. No account or login is required.