XML Tools
9 free tools · 100% client-side
Format, minify, validate, and inspect XML, WSDL, and SOAP documents online with precise error reporting and a professional editor.
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Most-used XML Tools
XML Formatter
Re-indent any XML document into clean, readable markup — comments and CDATA preserved, validation built in.
XML Parser
Run a real XML parse in your browser — see the structure parsers produce, or exactly where they fail.
XML Validator
Strict well-formedness checking with the exact line and column of every violation — fix XML errors in seconds.
All 9 XML Tools
XML Formatter
Re-indent any XML document into clean, readable markup — comments and CDATA preserved, validation built in.
XML Minify
Strip every insignificant byte from your XML — smaller payloads for SOAP calls, config files, and storage.
XML Viewer
Explore any XML document as an interactive tree — elements, attributes (@-prefixed), and counts at a glance.
XML Validator
Strict well-formedness checking with the exact line and column of every violation — fix XML errors in seconds.
XML Editor
A full VS Code editing experience for XML — highlighting, folding, find & replace, validation, and tree view in one place.
XML Parser
Run a real XML parse in your browser — see the structure parsers produce, or exactly where they fail.
WSDL Formatter
Make machine-generated WSDL readable — messages, portTypes, bindings and services cleanly indented and explorable.
SOAP Formatter
Turn captured SOAP envelopes into readable XML — Header and Body cleanly indented, namespaces intact.
XML to XSD Generator
Paste a representative XML document, get a starting XSD with cardinality and types worked out — and an honest list of what one sample can never tell you.
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XML is still everywhere — these tools make it readable
Enterprise integrations, SOAP services, RSS feeds, Maven POMs, Android layouts, invoice standards — XML remains the backbone of systems that move real money. When a 9,000-character single-line envelope arrives in a log, the XML Formatter restores indentation with comments and CDATA intact; the XML Validator pinpoints the unclosed tag a parser only vaguely complained about; the XML Viewer turns deep nesting into an explorable outline; and XML Minify strips the whitespace back out for transmission.
Specialized variants understand the dialects: the WSDL Formatter and SOAP Formatter handle the namespace-heavy service documents that generic formatters mangle, and the XML Parser shows the document as structured data with attributes preserved as @-keys. All parsing uses a real XML parser with exact line/column diagnostics — not regex approximations.
From XML to anywhere
Because the platform shares one data model, XML work doesn't stop at formatting: convert XML to JSON for a modern API, to YAML for configuration, to CSV for a spreadsheet, or escape it and Base64-encode it for embedding. Going the other way, JSON to XML produces element-based documents with a configurable root. If you need typed classes from an XML sample — Java, C#, TypeScript and more — the code generators accept XML input directly, or generate an XSD schema from a sample document instead — cardinality, attributes and types inferred from repetition.
Help
Frequently asked questions
Everything you need to know about the XML Tools.
01Why does my XML fail validation when it looks fine?
The usual suspects are invisible: an unescaped & in an attribute or text node, mismatched tag case (XML is case-sensitive), a stray character before the <?xml?> declaration, or a missing namespace prefix declaration. The validator reports the exact line and column of the first violation, which almost always lands on or just after the real problem.
02Do these tools handle namespaces, comments and CDATA?
Yes. Formatting preserves comments, CDATA sections, processing instructions, and namespace prefixes exactly; validation understands prefixed elements; and the WSDL/SOAP formatters are tuned for documents where namespaces do the heavy lifting.
03Can I convert XML with attributes to JSON without losing them?
Yes — XML to JSON maps attributes to @-prefixed keys and text content to #text, the same convention used by fast-xml-parser. The mapping is reversible enough for inspection and most integrations; the tool page documents it precisely.
Learn the format
Guides for xml tools
FreeFormatter Alternatives (2026): Where Its Tools Went
FreeFormatter.com has been retired and its tool pages now return 404. A verified map of where each formatter, validator, escaper and encoder moved.
6 min readGuide · Data FormatsXML Namespaces Explained: Prefixes, Default Namespaces and Common Errors
What xmlns and xmlns:prefix do, how default namespaces scope and inherit, why attributes are excluded, and why XPath returns nothing on namespaced XML.
7 min readTutorial · Data FormatsXML Tutorial: Structure, Syntax & Survival Skills
A working developer's XML tutorial: elements, attributes, namespaces, escaping, and well-formedness rules — with the errors that actually break parsers.
2 min readGuide · Data FormatsJSON vs XML: An Honest Comparison
JSON vs XML compared without tribalism: syntax, size, attributes, namespaces, schemas, tooling — and the cases where each format genuinely wins.
2 min read