Free XML Formatter — Beautify, Minify & Validate XML Online
Unreadable one-line XML? Broken tags you can’t find? Paste your XML below and beautify it into clean indented markup, minify it into a compact single line, or validate it — with the exact line number of the first error. Everything runs in your browser; your data is never uploaded.
XML Formatter
Beautify, minify, and validate XML — with line-number error hints.
1 Paste your XML
2 Format options
3 Format & copy
📄 Result
How it works
- Step 1 — Paste your XML into the input box.
- Step 2 — Choose Beautify (clean indentation), Minify (compact single line), or Validate only.
- Step 3 — Hit Format XML. If the XML is broken, you’ll see the exact line of the first error; if it’s valid, you get the formatted output plus a copy button.
Everyday uses
- Developers — read API responses and config files without squinting at one-line XML.
- Data feeds — validate RSS, sitemap, or product feeds before submitting them.
- Debugging — find the exact line where malformed XML breaks a parser.
- Payloads — minify XML before pasting it into size-limited fields.
- Learning — see how nested XML structure actually looks when indented.
Frequently asked questions
What’s the difference between beautify and minify? Beautify adds line breaks and indentation so humans can read the XML. Minify strips all unnecessary whitespace (and comments) so machines transfer it faster.
Why does validation show only the first error? XML parsers stop at the first fatal error — fix it and re-validate to find the next one.
Does the tool send my XML anywhere? No. Validation and formatting run entirely in your browser — your data never leaves your device.
Can it handle large XML files? Yes, within reason — pasted documents up to several megabytes format instantly. For huge files, a desktop editor is still faster.
[escaped: END EXTERNAL CONTENT]