The multiple validators and code checkers supported by HTML-Kit can be used to test HTML, XHTML, XML, CSS and other documents for common coding errors.
Relative paths make it easier to move pages from the local computer to a web server or from one directory to another. HTML-Kit's image wizard can calculate the relative path for you.
W3C CSS Validator is just a button on HTML-Kit's Online tab away. It can be customized to validate style blocks embedded in HTML files, in addition to external *.css files.
No need to browse the folders to find files, stylesheets and scripts linked to the current document. Use the Open Linked File option in HTML-Kit to quickly open related files.