Title attribute (SEO)
title is one of the attributes that is available for images (and maybe other objects as well). I used to call them tooltips, but that's the wrong term.
Alt texts are more important
See Alt texts (SEO)#Alt texts vs. titles - Which is more important? for details.
Alt text & Title in action
Put an arbitrary image on your computer desktop, call it
tmp.png and create file
test.html (also on the desktop) with the following content:
<html> <img src="tmp.png" alt="This is the alt text" title="This is the title" > </html>
Doubleclick on the file to open it in your browser. Some things you might notice:
- The alt text doesn't pop up
- The title does pop up.
The title attribute is usually shown as tooltip when you hoover over it with a mouse or similar device - But they are not 'tooltips', that's only how they appear.
The title attribute is shown as a tooltip when you hover over the element. A title attribute is not required. What’s more, most of the time it doesn’t even make sense to add it. They are only available to people who use a mouse (or other pointing devices) and the only one case where the title attribute is required for accessibility is on <iframe> and <frame> tags. If the information conveyed by the title attribute is relevant, consider making it available somewhere else, in plain text. And if it’s not relevant, consider removing the title attribute entirely.
Conclusion: Use alt texts, don't use title.
- https://yoast.com/wordpress-seo - Doesn't mention tool tips
- https://wplift.com/yoast-wordpress-seo-vs-all-in-one-seo - Doesn't mention tool tips