GML Syntax Validator

Upload or paste in your Graffiti Markup Language to test it out.

Check out the reference GML spec

What does this do?

  • Check for syntax errors
  • Are you missing any important tags?
  • Make sure other GML players will be able to scale & orient correctly
  • Ensure maximum awesome


* every GML tag page on 000000book now has a "Validate GML" link to jump here quickly.

* API-enabled: POST to this page with your data in the "gml" or "tag[gml]" field, or after uploading try fetching URLs like: