Automated testing tools are useful: they quickly spot insufficient contrast, images without an alt attribute and fields without a label. But they only cover part of the accessibility requirements.
What a tool can do
- Detect a missing attribute (alternative text, label, page language).
- Calculate the contrast ratio between two colours.
- Spot structural errors: skipped heading levels, duplicate IDs.
What a tool cannot do
- Judge whether alternative text is relevant: “image123.jpg” passes the test but helps no one.
- Check that a user journey is keyboard-operable from start to finish.
- Understand whether a screen reader announcement makes sense in context.
- Assess the cognitive load of a form or an error message.
What about accessibility widgets?
A widget such as widgeTH gives your visitors real comfort: text size, contrast, spacing, pausing animations. It matches your brand colours and installs in minutes, with no redesign of your site.
The value of lived experience
Our auditors use a screen reader, keyboard navigation or magnification every day. They know immediately what blocks, what slows things down and what works. Combined with the standard's checklist and the tools, this lived expertise produces a reliable audit and a useful remediation plan.