By Jeremy Sydik
It isn't a one-browser net anymore. you want to succeed in audiences that use cellphones, PDAs, online game consoles, or different "alternative" browsers, in addition to clients with disabilities. felony necessities for assistive applied sciences in addition to a wide range of latest shopping reviews skill you must pay attention to semantics, exchange entry paths, and revolutionary enhancement. supply your viewers the facility to have interaction together with your content material all alone phrases. it is the correct factor to do, and with a $100 billion a 12 months marketplace for obtainable content material, new legislation and new applied sciences, you cannot have the funds for to disregard accessibility. With this e-book, you will study simple rules and strategies for constructing available HTML, audio, video, and multimedia content material. additionally, you'll know how to use the foundations you study during this ebook to new applied sciences after they emerge. you are going to find out how to:Use top practices of accessibility to enhance obtainable websites construct trying out into tasks to enhance effects and decrease charges Create top of the range substitute representations to your viewers upload accessibility positive aspects to exterior media like PDF and Flash Negotiate the terrain of accessibility criteria follow ideas of accessiblity to new applied sciences as they emerge
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Additional info for Design Accessible Web Sites: 36 Keys to Creating Content for All Audiences and Platforms (Pragmatic Programmers)
For example, a text representation of a Photoshop demo isn’t generally a realistic idea. When this happens, it is generally sufficient to provide text describing what the demonstration is of. This serves two purposes—it makes sure that we don’t create a “black hole” in our content where users with disabilities become lost and it allows these users to do forward research for others who do have the sensory abilities needed to use the content. What we want to keep in mind, however, is that we need to build an interface to sensibly access the alternate paths rather than just heaping all of the options in one place which might overload the users.
By way of example, let’s consider image assets. We might want to think about the following: • Maximum image height and width • Color depth • Image file size • Content meaning of the image and how it will be stored. For our example project, we would like to be able to print articles and send them to handheld users as well as providing them online so, ideally, we would be able to provide 300dpi output that is still meaningful when scaled to 200 pixels wide. Additionally, where possible, we would like to be able to represent images in 16 level grayscale.
Perceptual Disorders A perceptual disorder is an inability to clearly or correctly understand sensory information. This might appear as an inability to distinguish spatial relationships or to separate foreground from background. There can also be gaps in sensory perception where there is no loss in vision or hearing but there is an incomplete recognition or understanding of visual or auditory information. Processing Disorders Processing disorders are an inability to encode or decode information.
Design Accessible Web Sites: 36 Keys to Creating Content for All Audiences and Platforms (Pragmatic Programmers) by Jeremy Sydik