In a Google webmaster hangout, Google’s John Mueller confirmed the importance of alternative image texts, especially for mobile pages.
“Specifically around images in general – not specific to image links, but images in general – especially on mobile, make sure that your images on mobile pages also have an alt text.”
IMG alt texts are important
Google’s upcoming mobile-first index will be a major change. John Mueller indicates that the alternative image texts will have an impact in the next index. In addition, alternative image texts improve the usability of your website for people who cannot load the images because of slow Internet connections and for people who use screen readers.
Check your IMG alt texts
The website audit tool in SEOprofiler checks the IMG alt texts on your web pages. You can also specify if the mobile version or the desktop version of your web pages should be checked. If you haven’t done it yet, create your free SEOprofiler account now: