XML Minifier
Paste formatted XML and compress it into a compact, minified form. Removes all unnecessary whitespace, indentation, line breaks, and comments to reduce file size.
Last updated: May 28, 2026
Find this tool useful? Support the project to keep it free!
Buy me a coffeeWhat is XML Minifier?
XML Minification is the process of removing all formatting characters — spaces, tabs, newlines, and comments — that are not part of the XML data itself. The result is a compact single-structure XML string that is functionally identical to the original but takes less storage space and bandwidth.
Minified XML is commonly used in SOAP web services, XML-based APIs, configuration bundles, and embedded systems where bandwidth or storage is limited. It is also useful when embedding XML inside another format or when the overhead of pretty-printing is not needed.
How to Use XML Minifier
Paste your formatted XML into the input area or click "Load Sample"
The minified XML appears instantly on the right
The size stats show original size, compressed size, and bytes saved
Copy or download the minified output
Common Use Cases
- Web service developers reducing SOAP request and response payload sizes.
- Developers embedding XML documents as string values in JSON payloads.
- DevOps engineers compressing XML config files for deployment packages.
- API engineers optimizing XML responses before caching.
- Data engineers reducing the storage footprint of XML data files.
Example Input and Output
A formatted XML document is minified by removing all whitespace and comments.
<?xml version="1.0" encoding="UTF-8"?>
<!-- User record -->
<user id="42">
<name>Alice</name>
<email>[email protected]</email>
<roles>
<role>admin</role>
<role>user</role>
</roles>
</user><?xml version="1.0" encoding="UTF-8"?><user id="42"><name>Alice</name><email>[email protected]</email><roles><role>admin</role><role>user</role></roles></user>Privacy
All processing runs in your browser. No data is uploaded to any server.
Frequently Asked Questions
Does minifying XML change the data?
No. Minification only removes formatting whitespace and comments. The element structure, attributes, and text content are preserved exactly. The minified XML is semantically equivalent to the original.
Are XML comments removed?
Yes. XML comments (<!-- ... -->) are removed during minification since they are not part of the data and serve no machine-readable purpose.
What if my XML is invalid?
The tool validates the XML before minifying. If the input is invalid (mismatched tags, encoding errors, etc.), it will show the parse error instead of producing output.
Is this tool safe for sensitive data?
Yes. All processing runs entirely in your browser. Your XML is never sent to any server.
How do I format minified XML back to readable form?
Use the XML Beautifier tool to re-add indentation and line breaks to any compact or minified XML.
Related Tools
XML Validator
Validate XML syntax online. Shows valid/invalid status with exact error line and column, plus structure stats including root element name and element count.
XML Beautifier
Format and prettify minified or messy XML with configurable indentation. Also minify XML to remove whitespace.
XML to JSON Converter
Parse and convert XML to clean JSON instantly — attributes, namespaces, and nested elements handled.
XML to YAML Converter
Convert XML to YAML. Parses XML with the browser DOMParser, maps element names to YAML keys, handles attributes (@prefix), and serializes repeating siblings as YAML sequences.
XML to CSV Converter
Convert XML to CSV online. Flattens repeated XML elements into rows and columns with configurable quoting and header options.
JSON to One Line
Compress a formatted JSON object into a single line by removing all whitespace and line breaks. Shows byte savings.