DeveloperRuns locally · No upload

XML Formatter

Validate and pretty-print XML in the Web Formatter workbench — switch to HTML, CSS, or JS tabs without leaving the page.

Private by design

Everything runs in your browser. Your input is never uploaded, stored, or logged on our servers.

Works offline after load

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Frequently asked questions

Does it catch invalid XML?+

Yes. Invalid XML shows a parse error. Valid XML is indented for readability.

Is this tool free?+

Yes. Every Utiliio utility is free with no sign-up, usage limits, or paywalls.

Do you store my data?+

No. Processing happens entirely in your browser. Your input never leaves your device.

Can I use this tool offline?+

Yes. Once the page loads, most tools continue working without an internet connection.