7.4.1. Indicate in the alt attribute of the CAPTCHA image where the user can find the non-graphic CAPTCHA version
Whenever a CAPTCHA image is used, indicate where the non-graphic version of the CAPTCHA is found in the alt attribute of the image.
Often, the non-graphic version is an audio version. In this case you could have an alt text similar to this:
<img src="captcha.png" alt="CAPTCHA (antispam image). If you cannot see the image, use the audio version available below." />
Related recommendations
- Previous recommendation: 7.3.1. Update the page <title> when a page returns an error or a confirmation message
- Next recommendation: 8.1.1. Tag unordered lists with <ul> and <li>