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XML Pretty Print Online Tool (SAMLTool.com)

Paste XML (including SAML Response/Assertion XML), then pretty print or minify it with a clean, readable layout. This runs fully in your browser and shows XML parse errors clearly.

Category: Data · URL: /tools/xml-pretty-print-online-tool-samltool-com.html
Tip: paste SAML Response/Assertion XML here
Privacy: runs locally in your browser. No uploads, no tracking scripts.

How to use

Use it like a simple SAMLTool-style XML formatter:

  1. Paste your XML into the input box.
  2. Choose an indent style (2/4 spaces or tabs).
  3. (Optional) Enable removing whitespace-only text nodes to avoid extra blank lines.
  4. Click Pretty Print (or Minify).
  5. Copy the output, or check the error box if parsing fails.
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Secondary intents covered: Format messy XML into readable, indented output, Minify XML for compact storage or transport, Detect and display where XML parsing fails, Clean up SAML Response/Assertion XML for troubleshooting, Remove whitespace-only text nodes added by indentation, Copy formatted XML to clipboard quickly, Load a sample SAML-like XML snippet to test formatting, Switch indentation between 2/4 spaces or tabs, Reset input/output to start over

FAQ

Does this tool send my XML to a server?

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

Can I use this to pretty print SAML Responses and Assertions?

Yes—paste the SAML XML and click Pretty Print to make it readable for debugging.

Why do I see extra blank lines after formatting?

Those usually come from whitespace-only text nodes. Enable “Remove whitespace-only text nodes”.

Will formatting change my data values?

It should only change whitespace/indentation. If your XML relies on significant whitespace in text nodes, disable whitespace stripping.

What causes an “XML parse error” here?

Common causes are missing closing tags, invalid characters, or unescaped & inside text/attributes.

Can I minify XML too?

Yes—click Minify to remove inter-tag whitespace and produce compact XML.

Does it preserve the XML declaration (<?xml ...?>)?

If your input includes it and “Keep XML declaration” is enabled, it will be kept in the output.