Web Accessibility is a term to refer web content to make available for all kinds of users, which means providing equal access and equal opportunity to people with disabilities as well. Web has been integral part of life, whether it is health, education, employment, government related sector, providing information and services on web has made life much easier than before. Web content could be text, images, audio, video, forms etch, web accessibility assures to make them available to all kinds of users. Click here to read more detail about accessibility provided by W3.
To meet accessibility guidelines, developers and content publishers should develop the general practices of adding attributes of HTML elements, which will help to make web content available to all kinds of users. For example, in traditional web development and content publishing, alt attribute of image, title of links, summary of tables etc. were not paid that much attention. Now, from accessibility point of view, they are quite important, as the screen reader software will use them.
A lot of companies provide PDF documents on their website, screen reader will have problem in accessing PDF documents, especially if they contain scanned images, untagged documents, images without alt tags. You can perform quick check as per below steps.Hence, if you are publishing PDF documents, you can improve accessibility with following:
There are a number of free and commercial test tools, which can be used to check websites whether they meet accessibility standards or not. One of the free tool is WAVE(Wave Accessibility Evaluation Tool). You can add it as extension of modern browsers like Chrome and can test. Alternatively, you can go to http://wave.webaim.org/ and type your website. Then, it will generate a report on left hand side which shows errors, warnings and also points with informative tool tip on right hand side, which will guide you what to be added. You can also check colour contrast with contrast tabs.