XML formatter and tree viewer
XML Viewer Online
Paste XML or upload an XML file to format, minify, check well-formed syntax, search nodes, and explore the document in a tree view.
View XML files online from paste, upload, or sample data
People searching for an XML viewer online usually have raw markup in front of them and need a quick answer: is this XML readable, well formed enough for the browser parser, and structured the way I expect? This page starts with the working area because the first task is not reading a tutorial. Paste XML, upload a local .xml or .txt file, or load the sample document to see how nested elements, attributes, namespaces, and CDATA are displayed.
XML still appears in RSS feeds, sitemaps, API responses, configuration files, product exports, build tools, and older integrations. The viewer keeps that workflow practical: input on one side, parser status and output on the other, with formatted, tree, and minified views available after the browser can parse the document. If you need an online XML viewer or an XML online viewer for a quick check, start with the tool above and then use the guidance below only when you need context.
Paste XML markup
Use paste mode for API snippets, sitemap fragments, RSS items, SOAP examples, and short configuration blocks.
Upload an XML file
Choose a local XML or text file when you want to inspect a saved export without opening a full XML editor.
Try sample XML
The sample includes repeated nodes, attributes, a namespace prefix, and CDATA so you can test the XML tree viewer quickly.
Format XML online and beautify it for reading
XML often arrives as a compressed line from an API, log entry, export job, or copied browser response. The formatted view turns that markup into indented XML so opening tags, closing tags, child elements, and repeated records become easier to scan. This covers the same intent behind XML formatter, XML beautifier, and format XML online searches, but keeps the result next to parser feedback and tree inspection.
Formatting is most useful after the XML is well formed. If the parser reports an error, fix that first, because indentation can only be trusted when the document has a valid XML structure.
Readable indentation
Use formatted XML to review nested records, repeated items, feed entries, and configuration sections without manually adding line breaks.
Copy a clean version
Copy the formatted output for documentation, support replies, code review notes, or debugging messages when the XML parses successfully.
Validate XML online for well-formed syntax
XML validator searches can mean very different things. This viewer lets you validate XML online for well-formed syntax with the browser parser. That means it can catch basic syntax problems such as broken nesting, missing closing tags, duplicate or misplaced declarations, invalid tokens, and markup that cannot be parsed as XML.
It does not check whether your file follows a particular XSD, DTD, Schematron rule set, or business contract. If a vendor, feed platform, or internal system has its own schema rules, use this page as an early XML syntax check and then validate in the system that owns those rules.
Common XML parser errors to check first
When XML fails to parse, start with the smallest structural problems. Look for a missing closing tag, a closing tag that does not match the opening tag, raw ampersands in text, malformed attributes, nested XML declarations, or copied text before the root element. These issues are common when XML is copied from logs, emails, browser output, or generated files.
Once the XML is well formed, switch from error fixing to structure review. Check the root element, repeated child nodes, expected attributes, text values, namespace prefixes, and CDATA content before sending the XML into another tool or integration.
Explore XML in a tree viewer
The XML tree viewer is for structure, not just pretty printing. It shows the root element, child elements, attributes, and text values as expandable nodes. This is useful when indentation alone does not explain a deeply nested document, or when you need to confirm whether a value belongs to the expected parent element.
Review nested nodes
Follow parent and child relationships in API responses, feeds, build files, and exported settings.
Inspect attributes
Attributes are included in node labels, which helps when IDs, names, namespace prefixes, or flags are stored outside text values.
Read text and CDATA
Text nodes and CDATA sections are shown below their element so you can inspect values without losing the surrounding structure.
Search XML nodes, attributes, and text values
Search becomes important when an XML file has many repeated records. In tree mode, the search box highlights matches in element names, attribute names, attribute values, and visible text values. That makes it easier to find a product ID, feed title, namespace prefix, configuration flag, or specific response value without reading the entire document line by line.
The search is designed for inspection, not XPath. It does not evaluate expressions, filter the tree into a result set, or run namespace-aware queries. For many quick review tasks, a simple highlight is enough to answer whether the value exists and where it sits inside the XML structure.
Good XML search targets
- Element names such as item, entry, url, book, or product.
- Attribute values such as IDs, language codes, namespace prefixes, and status flags.
- Text values inside titles, descriptions, configuration values, and CDATA sections.
Minify XML online, copy, and download output
The XML minifier view removes extra spacing between tags and gives you a compact version of the same document. Use it to minify XML online when you need to copy XML into a test field, reduce visual noise in a short snippet, or save a smaller local copy after review.
Copy and download actions are available when the XML is well formed enough for the browser parser. That keeps the output tied to a document the browser understands instead of silently exporting broken markup.
XML viewer vs XML formatter vs XML validator
These searches overlap, but the intent is not identical. An XML formatter or XML beautifier focuses on indentation. An XML validator focuses on whether the document is acceptable. An XML viewer online should combine the first inspection steps: show readable XML, report well-formed parser status, provide a tree view, and let the user search the structure.
This page deliberately stops before heavier developer features such as XSD validation, XPath evaluation, XSLT transformation, namespace-aware extraction, or project file management. Those belong in a dedicated XML development environment.
XML inspection checklist before you use the output
Parser status
Fix well-formed syntax errors before trusting formatted, minified, or tree output.
Root and repeated nodes
Confirm the root element, repeated child records, and the parent node that owns each important value.
Schema expectations
Use this page for readability and syntax checks, then run schema or business validation where those rules are defined.
Privacy note for XML files
XML documents can contain configuration secrets, customer records, product feeds, integration settings, private URLs, or internal system identifiers. This viewer is intended for quick browser-side formatting and inspection, not secure enterprise document review. Use it for public examples, local test data, documentation snippets, and non-sensitive exports. If the XML includes credentials, private business rules, health records, financial records, or customer data, use an approved internal tool instead.
The safest habit is to remove secrets before pasting XML into any browser tool. Formatting can make a document easier to understand, but it does not make sensitive content safe to share.
When XML comes from an integration partner, keep a copy of the original response so you can compare parser errors, formatted output, and downstream validation messages. If a partner system rejects the same XML later, the original text helps you separate formatting changes from actual data, namespace, encoding, or schema issues during debugging. That comparison can save time when multiple systems report different error messages for the same document.