Design and Development of Website Validator using XHTML 1.0 Strict Standard

Based on research done by w3.org[1] there are five reasons why we must validate our web site : Validation as a debugging tool, Validation as a future-proof quality check, Validation eases maintenance, Validation helps teach good practices, Validation is a sign of professionalism. Therefore, we need an application that can help web designer create a good website with a valid HTML element and CSS.
This paper will show how to design and develop that application. Validation system process begins with lexical analysis, parsing, and then analysis of the tokens. Tokens being analyzed are elements and attributes. These tokens are checked for compliance with the Document Type Definition (DTD) Standard. In addition to the tokens, this application checks web page structures too. This application can also perform CSS validation in a web page. Moreover, the user can directly correct an invalid web page, thus shortens correction time. This application was created using Microsoft Visual Basic .NET 2008 as a programming framework and Microsoft SQL Server 2008 Express as a database.
Based on application testing, it can be concluded that the application can find errors either to validate HTML code or CSS validation. This application can also improve the web page complying with DTD XHTML 1.0 Strict Standard.