About 20% of the world’s population with at least one disability. A majority of the time limit, the limitations of the individual the full benefit from the resources of the Internet. Many companies have a web site on the internet that some sort of restriction on a person with a disability is. Companies that do not maintain accessible websites ignore a crucial part of the population and because companies have to rely on web designers web designer for the creation of accessible websites. Web designers use different techniques to sites on the Internet for users with disabilities, including visual impairments, physical limitations, cognitive disorders and hearing problems.
see people with normal vision are able to take pictures to understand visual signals, and to understand the symbolic meanings “of colors and shapes. But do people with visual impairments do not always understand the images and colors to make them from a website. There are several types of visual impairments, the effect of users of a Web page in several ways. Web designers have different levels of visibility to examine impairment, have in designing a website. people with visual impairments, including, no vision, low vision and color blindness different needs access to systems designed accordingly.
Accessibility for people with visual impairments to include, change text, color contrast, including old text, and compatibility with screen readers skip. Color contrast include the use of colors together and easy to read font colors compliment. For example, the text, background color and font color similar difficult or impossible for people to differentiate with color blindness. Colors also have the option to change to black and white or enlarged without distortion. Text size is an important factor for people with low vision. Small font on a web page can be read very difficult and it should be comprehensive. Older need reading glasses would have difficulty reading small text and search using the site inconvenient. If images provide on a website, they have an alternative source of information, like a day or alt-alt-known text. Alt-text can be read the technology products at one site and support appropriate to interpret images. Skip Text triggers supporting technology to save the content. It is found with recurring, non-critical information such as the logo of the site pages other than the home page and menus at several locations on the same page.
Hearing is a different classification of disabilities, the way a person receives the information from one site to interfere. The technologies used on the Internet allow people to watch videos, listen to music, and the use of other audio devices. Web Designer required to techniques and methods that enable people with a hearing impairment to information, to obtain a different mode to enforce. Hearing problems can use the strategies of access for any type of audio on the site-specific sound, are to provide information corrected. For websites, the audio information, a label option for people who need to contain. If the video is embedded in a website, it must also have a label option for people with hearing problems. These ALT tags are used in the same way for people with visual impairments, as they are not seen by the visually impaired users, but can be accessed through the support of technology. The provision of a copy for websites, podcasts helps a website accessible.
Access methods for users to help with physical disabilities can be made more complicated to implement. The website has been designed to show users and are posted throughout the site with several forms. For example, a site that can be navigated only available with the non-mouse, a person with cerebral palsy when he or she is using keystrokes to navigate the Web. need web developer to their web-page program, it can be navigated using keyboard commands, enter with the mouse on the page and navigate the menus. This will be multiple modes for the input of people with physical disabilities. A website should also be forgiving and consistent pages and menus.
Web accessibility for people with cognitive or learning difficulties to design the most difficult. It is difficult to methods that will benefit all users with cognitive or learning disabilities is recommended to develop. This area is complex and the population is greater than the sum of physical and sensory disabilities. Websites should be simple and clear navigation in page layout consistent and fault tolerant are designed. Clear language and the minimal use of text, many users will benefit with cognitive disabilities.
Specific accessibility guidelines for web designers interpreted directly, but they are not required to be used by commercial companies. As the laws change, it is increasingly important for web designers for different categories of disability and to understand the techniques and guidelines, which for the creation of an accessible website. Now is the time for web designers to start educating themselves about the design of accessible websites for a variety of disabilities, so that it is the time of web accessibility necessary preparation.
April 21st, 2011 
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