XML Formatter

Quick start

How to use XML Formatter

1. 1

   Paste your raw, minified, or unformatted XML string into the code editor panel.

2. 2

   Select your preferred indentation style, such as 2 spaces, 4 spaces, or tab characters.

3. 3

   Click the "Format XML" button to parse syntax and apply structured hierarchy.

4. 4

   Check the status panel for any XML validation or structural syntax errors.

5. 5

   Click the "Copy" button to instantly save the formatted XML document to your clipboard.

Overview

About XML Formatter

XML (Extensible Markup Language) remains a foundational data transport and configuration format across enterprise software, SOAP web services, Android manifests, RSS feeds, and legacy database systems. When XML payloads are minified for network efficiency or generated automatically by web services, they lose human-readable structure, making inspection and debugging challenging. Our Free Online XML Formatter converts single-line or cluttered XML strings into beautifully indented document trees. It validates XML tag matching, checks for unclosed elements, aligns attributes, and enforces uniform indentation across nested nodes. Whether you are debugging API responses, formatting configuration files, or inspecting document structures, this tool provides a browser-based XML workflow. Parsing runs locally with browser XML APIs, so the XML document does not need to be uploaded to our server for formatting.

FAQ

Frequently asked questions

Does this tool validate XML syntax prior to formatting?

The parser checks whether the XML is well formed and reports a parsing error when malformed markup is detected. The exact detail and location information available in an error message depends on the browser parser.

Does the formatter preserve CDATA sections and XML comments?

The formatter is designed to keep normal XML structure such as declarations, namespaces, comments, and CDATA where supported by its parsing and formatting path. Review edge cases when exact source-level preservation is required.

Is my XML payload uploaded to external servers for processing?

The XML parsing and formatting operation uses browser APIs and does not require uploading the working XML document to our application server for processing.

Can this tool format large XML files efficiently?

Performance depends on document size, nesting depth, browser implementation, available memory, and device speed. Very large XML documents may be better handled with dedicated desktop or command-line tooling.