Google's John Mueller said on Twitter that text within an image's alt attribute is generally seen as text "as a part of the page where the image is embedded." If that text is within an H1 tag, then ...

You can check if an image has alt text by turning on a screen-reader and selecting the picture to hear how it's described. You can also inspect the HTML of the image ...

Alt text is a short written description of an image that describes the appearance, content and/or function of an image. Screen readers read the alt text aloud to website visitors, allowing them to ...

Editor’s Note: Mueller clarified his earlier comments in response to a reader question on Twitter on March 26, adding that “Google sees alt-text as a part of the page (you can search for it and find ...

Readers of a certain age may remember early e-books that had black rectangles in place of the images. (They were rendered as such because publishers had only obtained print rights to the images.) That ...