Add the free Ishihara colour vision test to your website with an embeddable iframe widget. For schools, clinics and HR teams.
<iframe src="https://ishiharatest.com/en-gb/embed/test" style="width:100%;min-height:876px;border:0;border-radius:8px;" scrolling="no" loading="lazy" title="Ishihara Color Blindness Test"></iframe>
<script src="https://ishiharatest.com/embed.js" async></script>