Techniques

Some people understand complex information best when it's presented visually, such as as a chart or diagram, while others find that reading the information suits them better.

Consistency is one of the cornerstones of good usability.

In long lists of links, it's helpful to show users which links they've already followed so they can focus on unseen content. Browsers do not tend to let you style visited links with anything but the color property.

Paragraphs of text are a fundamental core of web content. It's important to display them in a fashion that is optimally readable to the majority of your audience.

When text is presented as an image of text, that limits peoples' ability to change the appearance of that text. So wherever possible, use text along with CSS to apply styling.

It's important the search facility on your site is logically and conventionally placed and constructed for optimal accessibility.

It's important to provide consistent navigation regions to navigate between a site's pages and—where there is a lot content on each page—between sections of pages.

Color is a powerful visual means of presenting or distinguishing information, but when you use color to identify or distinguish information, make sure that this information is still available to people who can't perceive color.

Autocomplete widgets can be helpful for accessibility because they can make it easier to enter text by providing suggestions based on the characters initially typed.

A clear indication that specific form fields are required can save users time and avoid potential errors relating to missing data when a form is submitted.

Effectively and accessibly communicate form errors by: Communicating that a form has errors, Communicating any individual errors case by case, including clear guidance on how to address the error.

For a number of reasons including data persistence, performance and security, it is sometimes beneficial to terminate idle user sessions. It's important to warn people a session is about to expire and give them the option to continue.