Does the formatter validate XML, or just reformat it?

It validates as a side effect of parsing: if the document is not well-formed, such as an unclosed or mismatched tag, parsing fails and the error appears in the input panel instead of a formatted result.

What does the Tree view show that the formatted text doesn't?

Tree view renders each element, its attributes and its text content as an expandable, collapsible structure, which is easier to scan for a specific nested tag than reading indented raw markup line by line.

Is my XML uploaded when I format or minify it?

No, parsing, formatting and minifying all happen with the fast-xml-parser library running in your browser tab, so a config export or API payload never leaves your device.

Does minifying remove whitespace between all tags?

Yes, Minify mode collapses whitespace between elements down to none, producing a single compact line, which is useful for shrinking a payload before sending it, though it also removes readability.

XML Formatter

Pretty-print or minify XML, with validation, all local.

Local, Runs entirely in your browser, your data never leaves your device.

Loading tool…

Reformat XML, minify it, or browse it as a tree

This tool parses XML and offers three views: an indented pretty-print, a minified single-line version, and a collapsible element tree showing tags, attributes and text nodes. It's suited to cleaning up a minified SOAP response, a config export, or an RSS feed into something readable, or the reverse when you need XML compact for a request body. Element order and mixed content are preserved through parsing, and the whole process runs on a JavaScript parser in your browser tab.

How to use the XML Formatter

Paste XML into the left panel, or click Example to load a sample document.
Switch between the Format, Minify and Tree buttons to change the output view.
Read the pretty-printed or minified XML in the right panel, or expand nodes in Tree view.
Watch the footer under the input panel for a parse error if the XML is not well-formed.
Copy the result or use the send-to menu to pass it into another tool.

Parsing preserves document order and mixed content, meaning text nodes interleaved with child elements survive reformatting, which matters for markup-like XML such as XHTML fragments where whitespace and ordering carry meaning.

The formatter requires well-formed XML with a single top-level structure; unclosed tags, mismatched nesting or no elements at all will surface as a parse error rather than a best-effort output.

Frequently asked questions

Does the formatter validate XML, or just reformat it?: It validates as a side effect of parsing: if the document is not well-formed, such as an unclosed or mismatched tag, parsing fails and the error appears in the input panel instead of a formatted result.
What does the Tree view show that the formatted text doesn't?: Tree view renders each element, its attributes and its text content as an expandable, collapsible structure, which is easier to scan for a specific nested tag than reading indented raw markup line by line.
Is my XML uploaded when I format or minify it?: No, parsing, formatting and minifying all happen with the fast-xml-parser library running in your browser tab, so a config export or API payload never leaves your device.
Does minifying remove whitespace between all tags?: Yes, Minify mode collapses whitespace between elements down to none, producing a single compact line, which is useful for shrinking a payload before sending it, though it also removes readability.