XML formatter

Client

Pretty-print minified config fragments, shrink XML for transport, or confirm a paste is well-formed before it hits your pipeline. Parsing runs locally—use JSON ↔ XML when you need a JSON view, not just indentation.

What this does

Paste XML to pretty-print with two-space indents, minify to a single line, or confirm the document parses. Work stays in your browser—no schema (XSD) validation and no server upload.

XML

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Uses the same parser as JSON ↔ XML. Attribute names become @_name internally on round-trip—this page is for pretty-print, minify, and well-formed checks, not XSD validation.

Need JSON? Use JSON ↔ XML. For HTML/JS/CSS shrink, open compress & minify.

Nearby workflows on Toolcore

  • JSON ↔ XML — when you need a JSON object view or bidirectional conversion.
  • Compress & minify — for HTML, JS, CSS, and other markup shrink modes in one workspace.
  • plist ↔ JSON — for Apple property-list XML rather than generic documents.

Common use cases

  • Indent one-line SOAP envelopes or RSS items so code review and diffs are readable.
  • Minify XML responses before embedding them in tests or log fixtures.
  • Sanity-check config or sitemap fragments when a deploy failed with a parse error.
  • Prepare XML samples before converting to JSON on the JSON ↔ XML page.

Common mistakes to avoid

  • Expecting XSD or DTD validation

    This tool checks parseability with a fast XML parser—not schema rules. Run schema validation in your build or CI.

  • Assuming attributes round-trip through JSON conversion unchanged

    JSON ↔ XML maps attributes with an @_ prefix internally. Format here preserves structure for the same parser family.

  • Formatting huge untrusted documents in one paste

    Very large or deeply nested XML can slow the tab. Trim to the subtree you need first.

FAQ

Is my XML uploaded?

No. Formatting and validation run entirely in your browser.

How is this different from the JSON ↔ XML page?

That page converts between JSON and XML. This page only formats, minifies, and validates XML you already have.

Where is HTML or SVG minify?

Use the compress & minify tool for HTML, JS, CSS, and other markup modes.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • xml formatter online pretty print
  • format xml in browser validate well formed
  • xml minify tool client side
  • xml beautifier no upload

More tools

Related utilities you can open in another tab—mostly client-side.