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
| Document Type | Original | Minified | Savings |
|---|---|---|---|
| Config file | 5 KB | 2 KB | 60% |
| Data feed | 100 KB | 45 KB | 55% |
| SOAP message | 10 KB | 4 KB | 60% |
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.