Professional XML (Programmer to Programmer)
Many tools online and offline enable you to validate your XML documents against a DTD. One such tool online is Validome's DTD and Schema Validator found at http://www.validome.org/grammar/. This site is shown in Figure 5-5.
This online tool allows you to upload an XML document that contains an inline DTD and also to validate it. The results of the validation are presented in the browser.