1 in 10 web users have some kind of accommodation need when accessing websites.
The baby boomer population, by 2020, will outnumber those under age 3.
This group will have declining eyesight, hearing, mobility, and cognition.
Legible text is important for users with visual impairments.
Straightforward navigations help users with cognitive impairments
...and users navigating your site with their keyboard.
Quick load times serve users without access to high-speed WiFi.
Additionally, good header structure can help you win featured snippets or “instant answers” that give answers to users without clicking on the link.
Title tags communicate to users of a screen-reader the purpose of the page.
SEO: This is what gets displayed in Search Results pages. These are what entice visitors to come to the website.
ALT text describe images to those who cannot see it.
SEO Benefit: Images with alt text are also crawled by SEO engines.
These have a greater chance of being displayed on Google Image search, thereby exposing the site to more visitors.
In their Image Publishing Guidelines, Google states that they use “alt text along with computer vision algorithms and the contents of the page to understand the subject matter of the image.”
This also includes the alt-text of controls.
Easy-to-understand Link text helps all users.
Users of screen-reader or keyboard may pull up a list of links, so link text helps with context
SEO: Google looks at anchor text of links pointing to a page (both within a site and on external sites) as a way to know more about the content on the site.
Screen readers rely on code that accurately describes the content being displayed on a website. For standard website content, typical semantic HTML tags (like h1 and title) typically suffice. But, websites with more advanced content and features need additional markup. These features are frequently found on websites with dynamic content, e-commerce functionality, and large quantities of published content.
SEO benefit: Schema markup is “one of the most powerful, but least-utilized forms of SEO available today,” according to many top SEO experts.
There is no evidence that schema markup has a direct effect on website rankings, but there is plentiful evidence that schema markup improves click-through-rate on your pages.
Users with visual impairments often choose HTML sitemaps to navigate through a site.
SEO benefit: HTML sitemaps are a great way to provide search engines a list of all the primary content on your website. When the search engine crawler finds your sitemap, they’ll also find all the links on the page (and thus all the pages your sitemap lists)
People with Disabilities don't have patience for inaccessible websites.