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SEO In 2025: Check Accessibility Of Website

Search Engine Optimisation has changed dramatically in 2025. While AI and machine learning now dominate the landscape, one thing remains constant — the need to check accessibility of website. Tools like the W3 page validator may seem outdated, but they still play a vital role in ensuring your site meets essential web standards. Whether building from scratch or improving what already exists, SEO today is as much about usability as it is about visibility.

What SEO Means In 2025

Search Engine Optimisation, or SEO, is no longer just about keywords and backlinks. Today, it is about how well a site meets the needs of users — including those with disabilities. Google and other major search engines now use AI-driven algorithms that evaluate accessibility, mobile performance, and code quality before ranking a site.

Checking accessibility of website is no longer optional. Sites that fail basic checks risk being excluded from AI summaries and featured results altogether.

Why Website Accessibility Impacts SEO

Accessibility is at the core of a great user experience. It affects bounce rate, dwell time, and page engagement — all things that search engines use to evaluate a site. When you check accessibility of website, you are also checking whether your content can be used by real people in the real world.

That includes people using screen readers, keyboard-only navigation, or assistive technology. If a site is not accessible to them, it is also likely to confuse AI-driven bots trying to interpret it.

What Is The W3 Page Validator?

The W3 page validator is a classic web development tool that checks HTML and CSS for errors. Although it has been around for decades, it remains a helpful way to ensure code is clean and follows best practices.

Search engines prefer valid, well-structured code. The W3 page validator can highlight common issues that might otherwise be missed — such as duplicate IDs, missing labels, or incorrect nesting. Fixing these improves how AI reads content and helps it appear in more relevant results.

The Role Of AI In Search

AI has reshaped the way search works. It now focuses on:

User intent
Content quality
Experience and expertise
Trust signals
Mobile performance
Accessibility

This means that a site full of technical errors or inaccessible features is far less likely to appear in top positions. Even good content will struggle if the site fails a basic accessibility check or returns poor results in a tool like the W3 page validator.

Why We Do Not Offer SEO Services

We do not sell SEO or PPC services. We specialise in building accessible websites that meet the technical standards required for high visibility. That includes fast load times, error-free code, and a structure that works for everyone — including search engines.

Our work lays the foundation for long-term search performance. When you check accessibility of website and fix what is broken, you are already on the path to better SEO.

How To Improve SEO The Right Way

Here are some simple things to do now:

Use the W3 page validator to clean up code
Check accessibility of website with real users or expert testers
Add meaningful alt text to every image
Use clear, descriptive headings and logical structure
Ensure all content can be reached with a keyboard
Avoid popups that block access on smaller screens
Keep content updated and relevant

There is no need to pay for SEO tricks or dashboards. You need a site that works.

Google Is Blind

That is the title of Clive Loseby’s keynote at Brighton SEO 2025 — and it says it all.
Search engines cannot see your site. They interpret it based on code, structure, and signals. If a website is not accessible, important content may be missed, layout misunderstood, or results excluded entirely.

Watch the Brighton SEO 2025 talk

Checking accessibility of website is one of the smartest things to do for SEO in 2025. Search engines, like disabled users, need a site to make sense.

Want Help Making Your Website Accessible?

We specialise in building websites that pass real accessibility tests. That includes live testing by disabled people, clean code, and expert advice. We do not offer SEO packages — we offer something better: a site that works for everyone, and gets found.

See how we test websites manually
Learn about our inclusive website layout process
W3C Markup Validation Service
Google Search Central – Core Web Vitals