XML Formatter & Viewer
Format, minify and validate XML with syntax highlighting and interactive tree view. Everything runs in your browser — your data never leaves your device.
Paste your XML from APIs, configuration files, SOAP responses or any source. Supports namespaces, CDATA, comments and processing instructions. Use Format for readable output with indentation, Minify to compress, or switch to Tree View to explore the structure interactively.
How It Works
This XML formatter processes your data entirely in your browser — no data is sent to any server. Paste your XML, click "Format" or "Minify", and see the result with syntax highlighting or as an interactive tree.
Format & Minify
Format adds proper indentation (2 spaces, 4 spaces, or tabs) and line breaks to make XML human-readable. Minify removes all unnecessary whitespace between tags, reducing the XML to a compact form — ideal for configuration files, APIs and data transfer.
Syntax Highlighting
The formatted output uses color-coded elements: tag names in red, attribute names in orange, attribute values in green, text content in dark gray, comments in light gray, and CDATA sections in blue. Line numbers are shown on the left for easy reference.
Tree View
Switch to Tree View to explore your XML as a collapsible tree. Click the arrows to expand or collapse elements. Each node shows its tag name, attributes, child count, and text content — perfect for navigating deeply nested XML documents like SOAP responses or configuration files.
Privacy First
All processing runs locally in your browser using JavaScript and the built-in DOMParser API. Your data never leaves your device — there are no server requests, no cookies, and no tracking.
Frequently Asked Questions (FAQ)
Q: What does this XML formatter do?
A: This tool formats (pretty prints) XML with proper indentation, minifies XML to reduce file size, validates XML syntax and shows errors, highlights syntax with colors, and provides an interactive tree view for exploring nested elements.
Q: Is my XML data stored on the server?
A: No. All processing happens directly in your browser using JavaScript. Your data is never sent to any server. Everything stays completely private on your device.
Q: What is the difference between Format and Minify?
A: Format (pretty print) adds indentation and line breaks to make XML human-readable. Minify removes all unnecessary whitespace between tags to reduce file size, which is useful for configuration files and API payloads.
Q: How does the Tree View work?
A: Tree View displays your XML as an interactive, collapsible tree structure. Click the arrows to expand or collapse elements. Each node shows the tag name, attributes, and text content. This is useful for exploring deeply nested XML documents.
Q: Can it validate XML?
A: Yes. When you click Format or Minify, the tool validates your XML using the browser's built-in DOMParser. If there is a syntax error, it shows the error message to help you quickly fix the issue.
Q: What do the syntax highlighting colors mean?
A: Tag names are shown in red, attribute names in orange, attribute values in green, text content in dark gray, comments in light gray, and CDATA sections in blue.
Q: Does it support XML declarations and namespaces?
A: Yes, the formatter preserves XML declarations, processing instructions, CDATA sections, comments, and namespace prefixes. All standard XML features are supported.
Q: Is this tool free?
A: Yes, completely free with no registration required. Use it as many times as you need.