HTML validator | Article about HTML validator by The Free Dictionary
Also found in: Dictionary
HTML validatorSoftware that checks the validity of tags in an HTML document. Browsers treat errors differently, such as a start tag without an end tag, a lack of quotes or extra quotes. Unless an HTML page is tested, the page may display incorrectly on the user's device. See validate.
References in periodicals archive
The Spyglass HTML Validator
was developed because a lot of HTML code is non-compliant, leading to errors in display.