Is there an online facility for quick checking of Markup syntax for errors?
A. Yes, HTML Tidy is the de-facto standard HTML syntax error checking and clean-up program. It is not only a Markup syntax error checker, it also checks for document well-formedness; can convert HTML to XHTML; convert Uppercase Markup to lowercase; effect code “Pretty Printing” (indentation and spacing), etc. Although Tidy is one of the most popular and useful Web authoring utilities, it is not a Validator — it will not check Markup against specific DTDs and offer corrective action — although running documents through Tidy first is an important step toward successful Validation. I run all my Web pages through Tidy and use it for code “pretty printing”.
