XML formatter
Pretty-print or minify XML, with indentation control and a well-formedness check. Runs in your browser; nothing is uploaded.
About this tool
XML formatter cleans up XML two ways:
- Pretty-print — re-indent the XML so its structure is easy to read, with a configurable number of spaces per level.
- Minify — strip insignificant whitespace into a single compact line, smaller for transport or storage.
It also checks well-formedness: if the XML has a mismatched tag or a syntax error, you get a clear message with the byte position instead of broken output.
Privacy
Everything runs in your browser via WebAssembly — your XML is never uploaded to a server. You can also run it from the gizza CLI or inside a gizza chat.
Common uses
- Make machine-generated or one-line XML readable for debugging.
- Shrink XML before sending it over the wire.
- Quickly confirm an XML snippet is well-formed.
FAQ
Does it validate my XML against an XSD schema or DTD?
No — it checks well-formedness only: balanced tags, proper nesting, legal
syntax. That's enough to catch a missing closing tag or an unescaped &, but it
doesn't know anything about your schema, so structurally "wrong" but well-formed
documents format without complaint.
What does "XML is not well-formed at byte N" point at?
N is the byte offset where the parser gave up — count bytes from the start
of your input (multi-byte UTF-8 characters count more than one). The usual
culprits are a mismatched or unclosed tag, an attribute missing its quotes, or a
bare & that should be &.
Are comments, CDATA sections, and the XML declaration kept?
Yes. The formatter re-emits every parsed event — comments, <![CDATA[…]]>
sections, processing instructions, and the <?xml …?> declaration all pass
through in both pretty and minify modes; only the whitespace between elements
changes.
How much can I indent, and does minify use the indent value?
Pretty mode indents 0–16 spaces per level (default 2); values outside that range are clamped. Minify ignores the indent entirely — it collapses insignificant whitespace so the document comes out as a single compact line.
Developer & Automation Access
Run it from the terminal
Same engine as this page, headless — via the gizza CLI:
gizza tool xml-formatter "<root><item>value</item></root>"New to the CLI? Get gizza →
Open it by URL
Pre-fill and auto-run this tool with query parameters — the names match the API/CLI:
https://gizza.ai/tools/xml-formatter/?xml=%3Croot%3E%3Citem%3Evalue%3C%2Fitem%3E%3C%2Froot%3E&mode=pretty&indent=2Machine-readable descriptor: tool.json — title + parameters JSON Schema for agents.