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Progressive Enhancement is a powerful methodology that allows Web developers to concentrate on building the best possible websites while balancing the issues inherent in those websites being accessed by multiple unknown user-agents. Progressive Enhancement (PE) is the principle of starting with a rock-solid foundation and then adding enhancements to it if you know certain visiting user-agents can handle the improved experience.

The expansion of the Web from the PC to devices such as mobile phones, tablets and TVs demands a new approach to publishing content.

If you are not suffering from a color vision deficiency it is very hard to imagine how it looks like to be colorblind. The Color BLIndness S imulator can close this gap for you. Just play around with it and get a felling of how it is to have a color vision handicap.

Web accessibility evaluation tools are software programs or online services that help you determine if web content meets accessibility guidelines. This page provides a list of evaluation tools that you can filter to find ones that match your particular needs.

Many web designers, developers, and evaluators are introduced to web access through accessibility tools. All accessibility tools perform automated checks of web pages for accessibility issues and all generally have additional features, but each tool targets different audiences.

HTML_CodeSniffer is a client-side script that checks HTML source code and detects violations of a defined coding standard. HTML_CodeSniffer is written entirely in JavaScript, does not require any server-side processing and can be extended by developers to enforce custom coding standards by creating your own "sniffs".

The aural rendering of a document, already commonly used by the blind and print-impaired communities, combines speech synthesis and "auditory icons." Often such aural presentation occurs by converting the document to plain text and feeding this to a -- software or hardware that simply reads all the characters on the screen.

There are many variations of the UCD process. It can be incorporated into waterfall, agile, and other approaches. Depending on your needs, the user-centered design process is composed of several methods and tasks. What you are developing, your requirements, team, timeline, and the environment in which you are developing will all help determine the tasks you perform and the order in which you perform them.

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Almost every new client these days wants a mobile version of their website. It's practically essential after all: one design for the BlackBerry, another for the iPhone, the iPad, netbook, Kindle - and all screen resolutions must be compatible, too. In the next five years, we'll likely need to design for a number of additional inventions.