The XML Formatter is a free online xml prettify and format tool. It also works as a browser-based xml editor. Paste a raw or minified xml file and get clean, indented output instantly. Use it for any xml document that is hard to read: config files, API responses, RSS feeds, SVG files, and Office formats. The formatter fixes indentation and keeps all xml data intact — including CDATA sections, processing instructions, and declarations. It also checks the structure and shows any parse errors with their exact position. Choose your indent size: 2 spaces, 4 spaces, or tabs. Everything runs in your browser. No data is sent to any server. For related tasks, JavaScript Minifier can minify JavaScript, JSON Formatter can format JSON, and Regex Tester can test regular expressions.
XML is still widely used in enterprise software, APIs, and legacy systems. Many developers run into raw or minified code when working with SOAP services, Office files, RSS feeds, or Android config files. An xml prettify step is often the first thing needed to make a document readable. The formatter handles all standard constructs: attributes, CDATA sections, processing instructions, and namespace prefixes. One tricky area is whitespace inside text nodes. The tool keeps intentional whitespace within text while cleaning up whitespace between elements. Deep structures like XSLT or XSD schemas become much clearer once indented. When debugging a SOAP response, pasting the raw envelope makes the body and headers easy to scan. The validator catches common errors: unclosed tags, wrong tag names, bad attribute values, and missing namespace declarations. Writers use this online xml editor to clean up xml data exported from content systems before putting it in specs or reports. QA engineers paste API responses to check that an xml document matches the expected schema. In every case the workflow is simple: paste, format, read, fix. Who uses this tool? Developers paste a raw xml file from an API to see what is inside. DevOps engineers format config files before committing them to version control. Front-end developers clean up SVG files to edit them by hand. Students learning XML use the indented output to understand how nesting works. Anyone who receives xml data from a third party and needs to read it quickly will find this tool useful. It is free. It works in your browser. No account is needed. No file is uploaded. Just paste and go.