XML Viewer Online 2026 - View & Explore XML Code
View and explore XML structures with interactive tree visualization. 100% client-side privacy. Free online tool.
Key Features
- ✅ Interactive tree view of XML structure
- ✅ Expand/collapse elements
- ✅ Attribute viewing
- ✅ Search and filter capabilities
How to Use
- Paste or upload your XML file
- The tree structure appears automatically, with attributes shown inline
- Click elements to expand/collapse, or search to jump directly to a match
- View resolved namespace URIs and content for selected elements
Expert FAQ
- How does the tree distinguish attributes from child elements at a glance?
Attributes render inline on their owning element's node (as key="value" pairs, matching how they appear in source XML) rather than as separate child nodes in the tree, since attributes and elements are structurally different things in the XML data model — collapsing them into visually identical tree rows would make a SOAP header or a heavily-attributed config file (Android layouts, MSBuild XML) much harder to scan. - I'm looking at a large SOAP envelope with unfamiliar namespace prefixes — does the viewer help make sense of those?
Yes — each element's resolved namespace URI is available alongside its prefix, so ns1:Envelope and soap:Envelope can be confirmed as the same namespace (or seen as genuinely different ones) rather than you having to manually trace xmlns declarations up the tree by hand, which is the tedious part of reading unfamiliar SOAP/WSDL XML. - Can I search for a specific attribute value, not just an element name?
Yes — search matches against element names, attribute names, and attribute/text values, so you can find every element with a specific id="..." or a text node containing a particular string, not just tags with a matching name. Matches auto-expand their ancestor chain so you land directly in context rather than having to manually drill down. - Is this read-only, or can I change values here?
Read-only by design — this tool is for exploring and understanding structure, which is a different job from modifying it. If you need to make changes, the XML Editor is the equivalent tool built for that; keeping viewing and editing separate avoids accidentally mutating a document you only meant to inspect.
Technical Details
Reading raw XML for an unfamiliar document — a SOAP response with unknown namespace prefixes, a large configuration export, a WSDL file — means manually tracking nesting depth, matching opening and closing tags, and cross-referencing namespace declarations by eye. This viewer builds an interactive, collapsible tree from the parsed document instead, where attributes render inline on their owning element (matching their actual position in the XML data model, distinct from child elements) rather than being flattened into visually identical rows. Namespace handling is resolved rather than left as raw prefix text: each element's bound namespace URI is available alongside its prefix, so you can confirm whether two differently-prefixed elements (ns1:Item vs soap:Item) actually share a namespace without manually tracing xmlns declarations up the ancestor chain — a common source of confusion when reading SOAP or WSDL documents generated by different toolchains that chose different arbitrary prefixes for the same namespace. Search matches element names, attribute names, and attribute or text values together, with matching nodes' ancestor chains auto-expanded so a hit lands you directly in context. The viewer is intentionally read-only — a different job from editing, handled by the XML Editor — which keeps casual inspection of a document safe from accidental modification. For very large documents, nodes render lazily as they're expanded rather than the entire tree being built upfront, keeping the initial view responsive.