Files stay on your device

XML Formatter & Validator

Paste or open XML, catch syntax problems, and produce readable indented or compact output.

Private browser workspaceInput: XML, text → Output: XML, text

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Your file never leaves this browser

Processing happens locally using browser APIs and on-device code. Closing this tab clears the working data.

How it works

Done in three simple steps

Paste XML or open a file.

Choose Format or Minify.

Copy or download the result.

Good to know

Are my files uploaded?+

No. Your files stay on your device and are processed locally by your browser.

Does it support XML declarations?+

Yes. XML declarations are preserved by the browser serializer when present.