Skip to tool
All tools
FeuTex · free tools runs in-browser no bloat built by LiMiT

XML Formatter

Paste XML to pretty-print (indent), minify, or validate. Everything runs locally in your browser—no network requests.

Category: Developer · URL: /tools/xml-formatter.html
Note: Pretty/minify may remove whitespace between tags. If your XML relies on inter-element spaces (mixed content), validate carefully.
Related tools
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Use this tool to format or validate XML without leaving your browser.

  1. Paste your XML into the input box.
  2. Choose Pretty or Minify, and set indentation options.
  3. Click Format (or Minify) to generate output, or Validate to only check syntax.
  4. Copy the result with Copy.
Keywords this page targets (natural cluster): xml formatter, format xml online, pretty print xml, xml beautifier, xml minifier, minify xml online, xml validator, validate xml syntax, indent xml, xml pretty printer, format xml with tabs, format xml with spaces, fix xml formatting, remove whitespace in xml, xml pretty print tool, xml lint online, beautify xml string, convert xml to single line, xml parser error checker, xml formatting checker
Secondary intents covered: Pretty-print XML for readability with consistent indentation, Minify XML for transport/storage by removing inter-tag whitespace, Validate XML and surface parse errors quickly, Keep or remove the XML declaration (<?xml ...?>) in output, Copy formatted/minified XML to the clipboard, Debug malformed XML by narrowing down the failing snippet, Normalize XML before comparing diffs in code reviews, Prepare XML for embedding into config files or scripts

FAQ

Does this XML formatter upload my data?

No. Formatting and validation run locally in your browser with no network calls.

Can it validate XML?

Yes. Click Validate to check if the XML parses and see an error message if it doesn’t.

What’s the difference between Pretty and Minify?

Pretty adds line breaks and indentation; Minify removes whitespace between tags to reduce size.

Will formatting change my XML content?

It preserves structure and text nodes, but it may remove whitespace between elements, which can matter for mixed-content XML.

Can I keep the XML declaration (<?xml ...?>)?

Yes—enable Keep XML declaration to preserve it when present in the input.

Why do I see a “parsererror” message?

Your XML isn’t well-formed (for example, a missing closing tag or invalid character). Fix the reported spot and try again.

Does it support attributes, namespaces, CDATA, and comments?

Yes for parsing/validation; pretty-printing keeps them but may not reflow them exactly as your original source.