XML Formatter is a free data & format tool that runs entirely in your browser — pretty-print & indent XML / HTML. No upload, no account, no limits.
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How to use XML Formatter
Open the XML Formatter tool.
Paste or type your JSON, CSV, XML or YAML into the input field.
The output updates as you type — adjust the options if you need a different format.
Copy the result, or share the URL to hand the exact input to someone else.
About XML Formatter
Pretty-print XML and HTML fragments. The formatter collapses existing whitespace, then re-indents nested tags so the structure is easy to scan.
What people use it for
Indent a minified or messy XML document.
Tidy an HTML fragment for readability.
Frequently asked questions
Does it work for HTML too?
Yes — it indents HTML fragments as well as XML, by structure rather than strict validation.
Is it private?
Every calculation happens on this page, in your own browser. Your input is never sent to a server, never logged and never used for training — which also means the tool keeps working when you are offline.