XML Formatter
Pretty-print messy XML with adjustable indentation. Browser-based, instant, free.
Drop an XML file
or paste XML below
XML Formatter pretty-prints raw XML — adding consistent indentation and line breaks so the structure is readable at a glance. Converterzilla's formatter parses your XML with fast-xml-parser and re-emits it with the indent depth you choose, all in your browser.
How to use XML Formatter in your browser
- Drop or paste XML. Upload a .xml file or paste raw XML into the textarea.
- Pick indent size. Slide between 1 and 8 spaces of indentation.
- Click Format. The output appears below — copy or download as a new .xml file.
Why use Converterzilla for XML Formatter
Real parser
We parse with fast-xml-parser and re-emit, so the output is guaranteed valid XML — not just whitespace shuffling.
Adjustable indent
1-8 spaces. Pick what your code style uses.
Browser-only
No upload, no server logging, no API quotas.
Frequently asked questions about XML Formatter
Yes — only whitespace changes. The parsed tree is identical.
Comments are dropped by the default fast-xml-parser settings. We're working on a comment-preserving option.
Yes — the formatter re-parses regardless of input formatting.
Further reading and references
- MDN — XML overview — background reference for XML structure
- fast-xml-parser on GitHub — the parser powering this tool