Question: How can I show alt text on hover over an image in HTML?

Alt text, short for alternative text, is added to an image tag in HTML. This text appears inside the image container when the image cannot be displayed. It helps with accessibility and SEO.

However, by default, browsers do not display the alt text on hovering over the image. If you want to show a tooltip containing some text (like the alt text or something else) when a user hovers over an image, you can use the title attribute of the img tag in HTML.

Here's how you can do it:

<img src='image.jpg' alt='Alternative Text' title='Alternative Text'>

In this code snippet, when you hover over the image, the 'Alternative Text' will be shown as a tooltip.

Note: While the alt and title attributes can contain the same text, they serve different purposes. The alt attribute provides alternative information for an image if a user for some reason cannot view it. The title attribute provides advisory information about the element for which it is set.

If you want to customize the style of the tooltip, you would need to use CSS and JavaScript, as the built-in browser tooltips are limited in their styling options.