XML Formatter — Complete Guide
XML data returned from APIs, generated by applications, or copied from source files is often minified — all the whitespace stripped out to save bandwidth. The result is one long string that is effectively unreadable by humans. An XML formatter (also called a beautifier or pretty-printer) adds proper indentation and line breaks to make the structure clear.
Beyond readability, formatted XML is much easier to debug. You can quickly see which elements are nested inside which, spot missing closing tags, and identify unexpected structures.
What you can do with XML Formatter
- Making API responses in XML format readable for debugging
- Formatting configuration files like pom.xml (Maven), web.config, or Android manifests
- Cleaning up minified XML before checking it into version control
- Reading SOAP API payloads and responses during integration work
- Inspecting XML data exports from databases and enterprise software
How to use XML Formatter
Paste your minified or unformatted XML into the input field
The formatted XML with consistent indentation appears in the output
Copy the formatted version for editing or version control
Tips for best results
If the formatter shows an error, the XML is likely malformed — check for unclosed tags, missing quotes on attributes, or invalid characters
XML is case-sensitive: <Name> and <name> are different tags
The XML declaration at the top of the file should be the very first line with no whitespace before it
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Frequently asked questions
What is the difference between XML and HTML?
HTML is a specific application of markup that defines web page structure, with predefined tags and more lenient parsing rules. XML is a general-purpose markup language where you define your own tags and it is strictly parsed — every tag must be properly closed and nested.
Why does my XML show a parsing error after formatting?
XML is strict about syntax. Common errors include unclosed tags, attribute values without quotes, using & instead of &, and having content before the XML declaration. The error message usually points to the line and character where the issue occurs.