Free ADA compliance checker

An automated checker is fast and exhaustive on the mechanical failures: it can test every page for missing alternative text, unlabeled form fields, low color contrast, controls a keyboard can't reach, and broken focus order, the same barriers that drive most ADA website demand letters. That coverage matters because those failures repeat on every templated page, so a checker finds them at a scale manual review can't match.

It cannot judge everything. Whether your alt text is actually meaningful, whether a complex custom widget is usable end to end, and whether your site is fully WCAG-conformant are human-review questions. Complidar reports what is mechanically detectable and marks what needs a person, rather than letting a clean automated pass read as full compliance. The checker is the first pass, not the last word, and it never replaces counsel.

Plaintiff firms run the same kind of automated scan to build their target lists, then send demand letters priced below the cost of fighting them. Robles v. Domino's Pizza settled the question that the ADA reaches business websites, and the volume suits that followed cite mechanical WCAG failures a scan surfaces in minutes. Running the checker yourself means you see what they would see first, and can fix the cheapest, most-cited barriers before they are used against you.