The World Wide Web, boosted the development and exponential growth, worldwide, of numerous online businesses. Most of organizations in the developed countries are present, in some way, online. It is based on this assumption that digital accessibility plays a fundamental role in democratizing the use of online technologies for all citizens, including the most physically disabled: with motor or perceptive difficulties. A website could be considered accessible if it is also functionally usable, which means, easiness to interpret the content as well as navigating through the web pages, offering the customer a satisfying and inclusive experience. In this context, we propose to develop an accessibility assessment tool, ShoppingForAll, targeting users with a low degree of disability, in accordance with the Web Content Accessibility Guidelines (WCAG 2.1) for level A of compliance. This new tool will be applied to a restricted set of online stores, national or with an infrastructure in Portugal. The criteria used to select the websites under the study were native language and the position in the sales ranking. After analysing the results obtained, it was possible to establish a set of recommendations aimed at improving the accessibility of e-commerce websites. Our contribute aimed to promote and increase, albeit modestly, the accessibility on the Web. This tool can be used by experts in information technologies, by developers, and possibly e-commerce website managers.