Home
>
Web Development
>
The Secret Benefit Of Accessibility: Part 2 - A Higher Search Engine Ranking

The Secret Benefit Of Accessibility: Part 2 - A Higher Search Engine Ranking

An additional benefit of website accessibility is an improved performance in search engines. The more accessible it is to search engines, the more accurately they can predict what the site's about, and the higher your site will appear in the rankings.

Not all of the accessibility guidelines will help with your search engine rankings, but there are certainly numerous areas of overlap:

1. ALT descriptions assigned to images

Screen readers, used by many visually impaired web users to surf the web, can't understand images. As such, to ensure accessibility an alternative description needs to be assigned to every image and the screen reader will read out this alternative, or ALT, description.

Like screen readers, search engines can't understand images either and won't take any meaning from them. Many search engines can now index ALT text though, so by assigning ALT text search engines will be able to understand all your images.

2. Text displayed through HTML, not images

Text embedded in images appears pixelated, blurry and often impossible to read for users utilising screen magnifiers. From an accessibility point of view this should therefore be avoided.

Search engines equally can't read text embedded in images. Well, you can just give the image some ALT text, right? Unfortunately, there's strong evidence to suggest search engines assign less importance to ALT text than they do to regular text. Why? Spammers. So many webmasters have been stuffing their ALT tags full of keywords and not using them to describe the image. Search engines have cottoned on to this form of spamming (as they eventually do every form of spamming) and have taken appropriate action.

3. Descriptive link text

Visually impaired web users can scan web pages by tabbing from link to link and listening to the content of the link text. As such, the link text in an accessible website must always be descriptive of its destination.

Search engines place a lot of importance on link text too. They assume that link text will be descriptive of its destination and as such examine link text for all links pointing to any page. If all the links pointing to a page about widgets say 'click here', search engines can't gain any information about that page without visiting it. If on the other hand, all the links say, 'widgets' then search engines can easily guess what that page is about.

One of the best examples of this in action is for the search term, 'miserable failure'. So many people have linked to George Bush's bio using this phrase as the link text, that now when miserable failure is searched for in Google, George Bush's bio appears top of the search rankings!

4. Website functions with JavaScript disabled

JavaScript is unsupported by about 9% of web users (source: http://www.thecounter.com/stats/2004/November/javas.php), either because they've turned it off (for example to prevent pop-up adverts) or because their browser doesn't support it. Many forms of JavaScript aren't accessible to web users utilising screen readers.

Search engines can't understand JavaScript either and will be unable to index any JavaScript-driven content. Perhaps more importantly, they'll also be unable to follow JavaScript-driven links. You may really like the look of your dropdown menu but search engines won't if they can't access certain pages on your site because there aren't any regular links pointing at them.

5. Alternatives to Flash-based content provided

Flash, like JavaScript, isn't accessible to many users, including those using screen readers. Equally, search engines can't access Flash so be sure to provide equivalents.

6. Transcripts available for audio

Hearing impaired users obviously require written equivalents for audio content to be able to access it. Search engines too can't access this medium, but transcripts provide them with a large amount of text for them to index.

7. Site map provided

Site maps can be a useful tool for visually impaired users as they provide a straightforward list of links to the main pages on the site, without any of the fluff in between.

Site maps are also great for search engines as search engines can instantly index your entire site when they arrive at the site map it. Next to each link you can also provide a short keyword-rich preview of the page. All links should, of course, be made through regular HTML and not through JavaScript (see 4. above).

8. Meaningful page title

When we arrive at web pages the first thing that appears, and the first thing that visually impaired users hear, is the page title. This latter group of web users don't have the privilege of being able to quickly scan the page to see if it contains the information they're after, so it's essential that the page title effectively describes the page content.

If you know anything about search engine optimisation you'll know that the page title is the most important attribute on the page. If it adequately describes the content of that page then search engines will be able to more accurately guess what that page is about.

9. Headings and sub-headings used

Visually impaired web users can scan web pages by tabbing from heading to heading, in addition to tabbing from link to link (see 3. above). As such, it's important for accessibility to make sure that headings are correctly marked up by using h1, h2 etc.

Search engines assume that the text contained in heading tags is more important than the rest of the document text, as headings describe the content immediately below them. Make sure you use the heading tags properly and don't abuse them, as the more text you have contained in heading tags, for example, the less importance search engines assign to them.

10. CSS used for layout

Screen readers can more effectively work through the HTML code of CSS-based sites as there's a greater ratio of content to code. Websites using CSS for layout can also be made accessible to in-car browsers, WebTV and PDAs. Don't underestimate the importance of this - in 2008 alone there'll be an estimated 58 million PDAs sold worldwide (source: http://www.etforecasts.com/pr/pr0603.htm).

Search engines also prefer CSS-based sites and are likely to score them higher in the search rankings because:

- The code is cleaner and therefore more accessible to search engines
- Important content can be placed at the top of the HTML document
- There is a greater density of content compared to coding

Conclusion

With all this overlap between web accessibility and search engine optimisation there's no excuses for not implementing basic accessibility on to your website. It'll give you a higher search engine ranking and therefore more site visitors.

This article was written by Trenton Moss. He's crazy about web usability and accessibility - so crazy that he went and started his own web usability and accessibility consultancy ( Webcredible - http://www.webcredible.co.uk ) to help make the Internet a better place for everyone.

custom home cleaning Wilmette ..

In The News:

Scammers create fake Evite invitations that mimic legitimate event emails, requiring users to verify senders and use antivirus software for protection.

The new Apple Watch hypertension feature passively monitors blood pressure patterns over 30 days using sensors to detect chronic high blood pressure signs.

Chrome extension spyware disguised as a free VPN service highlights security risks after it captured private browsing data from trusted sites.

New research shows how fatty acids in cooking oil can safely dissolve and recover silver from circuit boards without harmful chemicals or environmental damage.

The Fox News AI newsletter gives you information on the latest AI technology advancements, and about the challenges and opportunities AI presents now and for the future.

Anthropic investigates alarming AI abuse case where hacker automated entire cybercrime campaign using Claude, stealing sensitive data from defense and healthcare firms.

TikTok, Meta and YouTube restrict Charlie Kirk shooting videos with age gates and warnings while X faces criticism for allowing continued circulation.

Cybercriminals use fake troubleshooting websites to trick Mac users into running terminal commands that install Shamos malware through ClickFix tactics.

San Francisco startup Fable launches Showrunner, an AI platform dubbed the 'Netflix of AI' that generates animated episodes from text descriptions with Amazon support.

Apple raised iPhone prices for some models despite receiving tariff relief from President Donald Trump, with the new lineup starting at $799 for the base model.

A two-story 3D concrete printed home in Western Australia demonstrates faster construction methods that could reshape American housing amid rising costs.

Credit scores remain important during retirement for insurance rates and housing applications, while seniors become prime targets for identity theft and financial scams.

Scammers now send unexpected packages with QR codes that redirect victims to fraudulent websites or download malicious software to steal sensitive information.

Meeting AI tools record private conversations alongside work discussions, creating privacy risks that can be managed with proper settings and awareness.

Hotel privacy concerns are valid but rare, with methods to detect hidden tech using smartphone flashlights, mirror tests and scanning apps.

Improve your Wi-Fi speed and reliability with 10 simple router optimization tips that don't require special apps or expensive subscriptions.

A Columbia University breach exposed names, Social Security numbers and academic records of nearly 869,000 people, with notifications beginning in August.

Rental car drivers use AI-powered apps like Proofr to protect themselves from unfair damage fees as major companies deploy automated inspection tools.

Fox News' AI newsletter brings you the latest on technology advancements around artificial intelligence.

OnTrac data breach between April 13-15, 2025, exposed personal information of over 40,000 people including Social Security numbers and medical records.

A woman named Wika announces her engagement to an AI chatbot sparking worldwide debate about virtual relationships and technology.

The notorious people search site National Public Data relaunches despite a previous breach affecting 3 billion individuals, raising fresh privacy concerns.

Revolutionary TRAUMAGEL gel controls life-threatening bleeding from gunshot wounds and traumatic injuries, helping first responders prevent prehospital deaths.

Protect your home network by enabling proper encryption, creating strong passwords, checking connected devices and using VPN and antivirus software.

The Navy's solar-powered Skydweller drone flew nonstop for 73 hours in Mississippi, proving renewable energy can power long-endurance military missions.

The Secret Benefit Of Accessibility: Part 2 - A Higher Search Engine Ranking

Web Development