XML Minifier

Minify XML safely with validation-first processing, optional comment removal, compact output modes, and a direct handoff into XML Compare, XML Viewer, and XML Formatter And Beautifier.

Waiting for XMLMode: single lineInput: 230 B
All processing happens locally in your browser. No XML is uploaded or stored.

How to Use

  1. Paste XML into the input panel or upload a local XML file.
  2. Choose single-line output for the smallest payload or compact-lines when you still want lightweight line breaks.
  3. Enable comment removal only when you want extra size savings and do not need inline notes preserved.
  4. Review the reduction audit, then copy, download, or open the original vs minified XML in Compare.

Related Tools

XML Formatter And BeautifierCompare XML OnlineXML ViewerXML ValidatorXML Sorter

Frequently Asked Questions

Does XML Minifier validate XML before compacting it?

Yes. The tool validates XML first and shows line and column diagnostics when tags are missing, nesting is invalid, or the document is not well-formed.

Does minifying XML change text content?

Not by default. This minifier removes formatting-only whitespace between tags and preserves text-node content where removing spaces could change XML meaning.

Can I remove comments from XML?

Yes. Comment removal is optional and off by default so you can choose between safer compaction and maximum size reduction.

What is compact-lines mode?

Compact-lines mode keeps lightweight line breaks instead of forcing a single-line output. It is useful when you want smaller XML without making the entire file one long line.

Is my XML uploaded to a server?

No. Validation, minification, comparison handoff, and output generation all happen locally in your browser.