Free XML Minifier – Compress XML Online

Minify XML by removing whitespace and formatting. See size reduction percentage. Validates syntax. Download result. 100% free.

What Is XML Minification?

XML minification removes unnecessary whitespace between XML elements while preserving the document structure. This includes:

• Whitespace between tags
• Indentation
• Line breaks
• Redundant spaces

How to Use This Tool

Step 1: Paste XML

Enter your formatted XML in the input area.

Step 2: View Results

See minified output with size comparison.

Step 3: Copy or Download

Copy to clipboard or download as .xml file.

Why Minify XML?

Reduce File Size

XML verbosity often includes significant whitespace. Minification can reduce size by 40-60%.

Faster Transmission

Smaller payloads transfer faster over networks.

Lower Storage Costs

Minified XML uses less disk space.

Size Reduction Examples

What Gets Removed

Removed:

• Spaces between elements
• Tab indentation
• Empty lines
• Trailing whitespace

Preserved:

• Significant whitespace (in text nodes)
• Attributes and values
• CDATA content
• Document structure

When to Minify XML

DO Minify:

• Production web services
• API payloads
• Network transfers
• Embedded configurations

DON'T Minify:

• Source files in version control
• Human-readable configs
• Documentation examples

XML Validation

This tool validates XML before minifying:

• Well-formed structure
• Matching open/close tags
• Proper attribute syntax
• Valid character encoding

Technical Details

Uses browser's native DOMParser for parsing and XMLSerializer for output. All processing is client-side.

Frequently Asked Questions

Does minification change my data?

No. Only formatting whitespace is removed.

What about significant whitespace?

Text content whitespace is preserved.

Is my data secure?

Yes. All processing is browser-based.

Related Tools

• XML Formatter — Beautify XML
• XML to JSON — Convert to JSON
• JSON Minifier — Minify JSON
• HTML Minifier — Minify HTML

Paste your XML above to minify.