XML Viewer

An XML viewer is an online tool that formats and displays XML so it is easy to read. It takes raw, minified, or messy XML and re-indents it with proper nesting and line breaks, and it checks that the document is well-formed, letting you read, review, and debug XML directly in your browser.

Click "Open XML file" and choose an .xml file from your computer, drag it into the editor, or paste your XML directly. The viewer formats the document and displays it in a clean, indented layout, so you can open and read any XML file online without installing anything.

Yes. The tool pretty-prints your XML with consistent indentation and, at the same time, checks that it is well-formed. If a tag is unclosed or the structure is broken, it reports the problem so you can fix it. For safety it does not process external entities or DOCTYPE declarations.

Yes. The XML viewer is completely free with no signup, and it works in your browser, so your XML is not stored on our servers. You can format, read, copy, and download your XML privately.

XML and JSON are both formats for structuring data. XML uses nested tags and is common in configuration files, RSS feeds, and older APIs; JSON is lighter and dominates modern web APIs. If you need to convert between them, use our XML to JSON or JSON to XML converters.

No. The XML viewer is a fully online, browser-based tool. There is nothing to download or install: open the page, paste or upload your XML, and format it right away.

Yes. The viewer is responsive and works on desktops, tablets, and phones. On smaller screens the input and output panels stack vertically so you can format and read XML on the go.

Formatting (or beautifying) XML means adding consistent indentation and line breaks so the nesting of elements is easy to follow. The data itself does not change, only its layout, which makes the document much easier to read, review, and debug.

When you format your XML, the viewer also checks that it is well-formed. If everything is correct you get a confirmation; if not, it reports the parser error describing what went wrong, so you can find and fix it quickly.

Well-formed XML follows the basic syntax rules of XML: every element has a matching closing tag (or is self-closing), tags are properly nested, attribute values are quoted, and there is a single root element. This viewer checks for well-formedness; it does not validate against a DTD or XSD schema.

The most common reasons are a structural error (an unclosed or mismatched tag, a missing root element, or an unquoted attribute) or a DOCTYPE declaration, which the tool refuses for security reasons. Check the error message to see what went wrong, correct the markup, and format again.

Yes. The viewer formats XML directly in your browser, so it comfortably handles typical files. Extremely large documents may take a moment and depend on your device and browser performance, but nothing is uploaded to a server.

Yes. After formatting, use the Copy button to put the result on your clipboard, or the Download button to save it as an .xml file. You can also load XML with Open XML file or by dragging a file into the editor.

Once your XML is ready, you can host it with Static.app. Add your file (or a ZIP of your site) and Static.app publishes it at a shareable link with a free domain and SSL, handy for XML sitemaps, RSS feeds, or data files you need to serve publicly.