Q: Does the formatter preserve comments?
A: Yes by default. Toggle “Strip comments” when you want to drop them.
Q: Is my XML uploaded to your server?
A: No. Parsing and serialization run entirely in your browser.
Q: Does it validate well-formedness?
A: Yes. Malformed XML produces a clear error with the underlying parser message. For strict validation, combine with the XML Validator tool.
Q: What does Minify do?
A: Minify removes all whitespace between tags and collapses repeated spaces inside text — producing the most compact valid XML form for transport.
Q: Are CDATA sections preserved?
A: Yes. CDATA, comments, and processing instructions round-trip intact.