$ Format XML
Paste XML and format it so it is easier to read.
XML Input
Paste raw XML and format it instantly.
Output
Formatted XML ready to inspect or copy.
<catalog>
<book id="bk101">
<author>John Doe</author>
<title>XML Developer Guide</title>
<genre>Computer</genre>
<price>44.95</price>
</book>
</catalog>Why this tool exists
Vultio XML Formatter helps you clean raw XML payloads into a readable indented structure so tags, attributes, and nested nodes are easier to inspect.
It is useful when you work with legacy APIs, SOAP integrations, feeds, exports, or configuration files that arrive minified or flattened into one line.
XML may be less fashionable than JSON, but many critical systems still depend on it: enterprise integrations, payment gateways, SOAP services, sitemaps, office document formats, and partner feeds all keep it relevant.
Formatting is often the first step before real debugging begins. Once the nodes are readable, it becomes much easier to spot a missing closing tag, a bad namespace prefix, an unexpected attribute, or a nested element that drifted away from the structure your parser expects.
Common use cases
Example input / output
Minified XML to readable blocks
Readable namespaced SOAP fragment
Common errors
cause:Opening and closing tags do not match (e.g., <item> ... </items>).
fix:Validate tag pairs and nesting before formatting; malformed XML can produce misleading layout.
cause:Broken prolog or unescaped reserved characters (&, <, >) inside text nodes.
fix:Use proper XML declaration and escape reserved characters with entities like & and <.
cause:Formatting improves layout, but namespace rules, schema expectations, or element ordering constraints may still be wrong for the target parser.
fix:After formatting, check namespaces, required elements, and any schema or service contract rules that the receiver enforces.
cause:Most XML workflows ignore indentation whitespace between elements, but some text-node-sensitive formats or signature workflows care about canonical structure.
fix:Use formatting for inspection, but verify whether your specific workflow depends on canonical XML, signed payloads, or whitespace-sensitive text nodes before reusing the formatted output blindly.
How developers use it in practice
Indented XML helps you answer two different questions faster: is the tree shape correct, and are the attributes on the right element?
A readable payload makes it easier to see whether a node belongs to the expected namespace, which is a common source of parser failures in older integrations.
Teams debug XML faster when the payload is pasted as readable structured text instead of a one-line blob copied from a log or vendor dashboard.
When not to use this tool
Limits and implementation notes
A nicely indented XML document can still violate a schema, use the wrong namespace, or omit required elements.
SOAP, feeds, config files, SVG, and document formats all use XML differently, so the right next debugging step depends on the specific domain.
When signatures or strict byte-for-byte comparisons matter, inspection formatting is not the same thing as canonical XML generation.
Related guides
Standards & references
Related tools
Frequently asked questions
What does an XML formatter online do?
It takes minified or unindented XML and outputs a clean, indented structure. Each nested element is visually separated, making the document hierarchy immediately readable.
When should I use an XML formatter online?
Use it when working with SOAP API responses, RSS or Atom feeds, Android layout files, Maven POM files, or any other XML that arrives as a single unreadable string.
Does XML Formatter validate my XML?
The tool reports parse errors for malformed XML. It checks structural well-formedness but does not validate against an XSD schema.
Does it support XML namespaces?
Yes. Namespace declarations and prefixed elements are preserved exactly as-is during formatting.
Is my XML sent to a server?
No. XML formatting runs entirely in your browser. Your data never leaves your machine.