When Google audits your website performance through Lighthouse or PageSpeed Insights, one of the key metrics it gives you is an Accessibility Score.
But what exactly does that mean — and why should you care?
Your Accessibility Score measures how usable and inclusive your website is for all visitors — including those with visual, motor, auditory, or cognitive impairments.
It’s part of Google’s Lighthouse audit, which evaluates your site on four main categories:
Performance (speed, load times, Core Web Vitals)
Accessibility
Best Practices
SEO
The Accessibility Score is expressed as a number between 0 and 100 — the higher, the better.
It’s calculated by checking how well your site follows Web Content Accessibility Guidelines (WCAG), an international standard for accessible web design.
When Lighthouse audits your site, it runs automated tests on elements like:
Text contrast (is text readable against its background?)
Alt text on images (so screen readers can describe them)
Form labels (are input fields properly named and usable?)
Keyboard navigation (can you move around without a mouse?)
Heading structure (does the content flow logically?)
ARIA attributes (used to make interactive elements accessible)
These checks ensure that people using assistive technologies like screen readers, voice commands, or keyboard navigation can access your content just as easily as anyone else.
Accessibility isn’t just about compliance — it’s about creating a better experience, reach, and performance for your website.
Why it matters:
Better Experience: Accessible sites are easier for everyone to navigate, read, and use, improving engagement and conversions.
SEO & Performance: Accessibility overlaps with Core Web Vitals (LCP, FID, CLS), helping your site load faster and rank higher in Google.
Legal & Ethical: Many countries require accessibility standards. Meeting them protects your business and ensures inclusivity.
Higher Conversions: Removing barriers like unreadable text or missing labels keeps visitors on your site and boosts conversions.
Your website’s Accessibility Score isn’t just another number — it’s a reflection of how easy, inclusive, and user-friendly your site truly is.
A higher score means: Faster load times, Happier visitors, Better Google rankings and a more inclusive experience for everyone.
If your accessibility score is lagging, it’s time for an update.
Ready to make your website faster and more accessible?
Get in touch today and we’ll run a free audit using Google Lighthouse to show exactly where your site can improve.
