Before you can use the plugin, you need to install it. The process depends on your version of Notepad++.

: Automatically detects missing tags or malformed structures. You can validate against XSD schemas or DTDs to ensure compliance. XPath Evaluation : Allows you to test XPath expressions directly on your open file to find specific data points. Tag Auto-Close

✅ Highly recommended for developers, testers, and analysts who need a free, fast XML editor without the overhead of full IDEs.

The plugin provides several "quality of life" features that save hours of manual editing:

The modern iteration of Notepad++ makes installing extensions incredibly safe and fast through its built-in repository manager. : Open your application on Windows.

| Feature | What It Does | Typical Use Case | | :--- | :--- | :--- | | | Formats an XML document with proper line breaks and indentation | Instantly turning a minified, single-line XML file into a readable, tree-structured document. | | Syntax Check & Validation | Checks the document for well-formedness and validates it against a schema (XSD or DTD) | Catching errors like unclosed tags before they cause issues in a system. Validating a configuration file against its official schema. | | XPath Evaluation | Allows you to run XPath queries to find specific elements or attributes within an XML file | Quickly extracting all URLs from an XML sitemap or counting the number of nodes with a specific attribute. | | XSLT Transformation | Applies an XSLT stylesheet to an XML document, transforming it into another format like HTML or CSV | Automatically generating an HTML report from an XML data file. | | XML Commenting | Provides shortcuts to comment and uncomment blocks of XML code | Temporarily disabling a section of XML for testing without deleting it. | | Tag Auto-Completion | Automatically closes the XML tag you're typing | Speeding up typing and preventing common syntax errors. |

: Click on the Plugins menu in the top navigation bar and select Plugins Admin... from the dropdown options.

XML (Extensible Markup Language) is the backbone of configuration files, data exchange web services, and legacy databases. When XML is compressed for transmission, it loses all formatting, resulting in a single, unreadable wall of text.

: Instantly formats messy, single-line XML into a readable, indented structure. Use the shortcut Ctrl + Alt + Shift + B for speed. Syntax Checking & Validation