Beautify or compress XML online. Syntax validation, configurable indent, one-click copy and download. All processing is local — no data ever uploaded.
? Format & Beautify? Minify & Compress? 100% Local
spaces
XML Input
Output
How to Use
Paste your XML into the left input box, or edit the sample data.
Select Format (pretty-print with indentation) or Minify (remove whitespace) at the top.
In Format mode, choose the desired indent size (2 / 4 / 8 spaces).
Click the action button. The result appears on the right. Syntax errors are shown below the input.
Click Copy to copy the result to your clipboard, or Download to save it as an .xml file.
About XML Formatter
XML is widely used in enterprise systems, document formats (DOCX, SVG, RSS), and protocols like SOAP. Formatting XML makes nested structures readable. This tool validates XML syntax -- unclosed tags, unescaped special characters, or unquoted attributes will be flagged. All processing is local in your browser.
Frequently Asked Questions
Format (beautify) adds indentation and newlines to make XML human-readable. Minify (compress) removes all unnecessary whitespace to reduce file size, ideal for production transfers.
No. All parsing and formatting is performed by the browser's built-in DOMParser and XMLSerializer APIs. Your data never leaves your machine.
Standard XML elements, attributes, the XML declaration (<?xml ...?>), comments (<!-- -->), CDATA sections (<![CDATA[...]]>) and processing instructions are all supported.
Some browsers' XMLSerializer omits or rewrites the XML declaration. The formatted output reflects the browser's parsed document — content is preserved, only formatting changes.
The tool processes XML in browser memory and handles files of several hundred KB easily. Very large files (several MB) may slow the browser; consider splitting them before processing.