Compress XML Files

Like JSON, XML is a text format, and much of its size in practice comes from formatting rather than data. Indentation, line breaks between tags, and extra whitespace inserted for readability add up fast in documents with deep nesting — configuration exports, data feeds, sitemaps, and RSS/Atom feeds are typically pretty-printed for humans to skim, even though the software consuming them never needs that formatting at all.

MiCompress removes the whitespace sitting between tags and trims the file, collapsing formatting that has no effect on the document's structure or content. Every element, attribute, and text value is left exactly as it was — only the spacing and line breaks between tags are stripped. The result parses to the same structure any XML parser would produce from the original, just without the extra bytes spent on formatting.

Minifying XML is purely cosmetic: tag names, attributes, nesting, and every piece of text content stay intact. Schema validity is unaffected, since removing whitespace between tags doesn't alter the document's structure. Any application, parser, or import process that reads the file gets the exact same data — the only difference is that a human opening it in a plain text editor sees one long line instead of a formatted tree.

The savings matter most for XML that's generated by a tool and consumed by software rather than read by hand — data feeds, config exports, SOAP or API payloads, and sitemaps. A short, simple XML file won't shrink much, but a deeply nested export with lots of formatting can drop noticeably once the indentation and line breaks are removed.