We applied aChecker tool (also called Web Accessibility Checker) which is accessible online to check the accessibility of websites under the three levels (A, AA, AAA) of Conformance of WCAG 1.0 as well as WCAG 2.0. In addition to this, we can choose many options like Section 508, Stanca Act, etc. for the evaluation process. The aChecker tool gives results in three different kinds namely Known problems, Likely problems, and Potential problems. Also, it described result in grouping in a well-ordered manner. The three levels of conformance used to meet the needs of different groups in different situations namely Level A (lowest), Level AA (medium) and Level AAA (highest). We have accepted AA, as it is the common practice adopted by accessibility studies.