Free Accessibility Checker (WCAG)

An accessibility check tests whether people with disabilities can use your website. It looks for common WCAG issues: images without alt text, low color contrast, form fields without labels, a broken heading order and elements that can't be reached by keyboard.

WPDoctor scans your pages and flags these issues with references to the relevant WCAG guidelines, so you can make your site usable for everyone — and reduce legal risk.

Why it matters

What this checks

How it works

What web accessibility really means

Accessibility means people with disabilities — visual, motor, hearing or cognitive — can perceive, navigate and use your website. That includes someone using a screen reader, someone navigating by keyboard only, and someone who needs high contrast or larger text. The Web Content Accessibility Guidelines (WCAG) are the international standard that defines how to get there.

This checker scans your page for the most common WCAG failures and maps each one to the relevant guideline so you know both what's wrong and why it matters.

Accessibility is also a legal and business issue

Accessibility lawsuits have risen sharply, and many are triggered by exactly the automated-detectable issues this tool checks for — missing alt text, poor contrast, unlabeled forms. Beyond compliance, an accessible site simply reaches more people: around 15% of the world lives with some form of disability.

There's an SEO bonus too. Descriptive alt text, a clean heading structure and clear link names help screen readers and search engines alike, so accessibility work often improves your rankings as a side effect.

How to fix common accessibility issues

Add meaningful alt text to informative images (and empty alt to purely decorative ones). Raise contrast so text meets at least a 4.5:1 ratio. Give every form field a proper label. Use headings in order (one H1, then H2s, then H3s) to describe structure. Make sure everything works with the Tab key and that focus is visible.

Automated tools catch a large share of issues, but full confidence also needs a manual pass with a screen reader and keyboard. The report gives you a prioritized, fixable list to start with.

Frequently asked questions

What is WCAG?

The Web Content Accessibility Guidelines — the international standard for making web content usable by people with disabilities, organized into levels A, AA and AAA.

Can a tool find every accessibility issue?

Automated checks catch a large share of common issues, but full compliance also needs manual testing with assistive technology and expert review.

Why does color contrast matter?

Low contrast between text and background is hard to read for people with low vision or color blindness — a very common, easily fixed issue.

Does accessibility help SEO?

Yes. Alt text, proper headings and clear structure benefit both screen readers and search engines.

Which WCAG level should I target?

Level AA is the widely accepted standard for most websites and the benchmark most laws reference. Level A is the minimum; AAA is stricter and often only needed for specialized content.

Can an overlay widget make my site compliant?

No. Automated overlay widgets don't fix underlying issues and have been named in lawsuits. Real accessibility comes from fixing the code — which is what this checker helps you find.