Alt attributes for images have several important uses. First and foremost, they improve web accessibility . The alt text contains what can be seen in the image. This text is read aloud by screen readers, allowing even people who cannot see the image to understand the image content. Furthermore, the alt text is displayed when an image cannot be loaded .
In the source code, the alt attribute looks like this:
<img src=“example-image.jpg“ alt=“Here is an alt text that describes what can be seen in the image” />
In the area of image SEO, alt attributes for images are especially important for jamaica phone number data search engines, as search engines were originally unable to understand image content at all. This has changed somewhat thanks to artificial intelligence. However, search engines are currently not fully capable of interpreting images correctly.
Google says it uses the alt attribute “together with machine vision algorithms” ( source ) to understand the content of the image.
When creating alt attributes, it's important to accurately describe the image content and phrase it in a way that people who can't see the image would still understand. If the image is relevant for image searches, the main keyword or, if applicable, secondary keywords should be used in the text. Keyword stuffing should be avoided under any circumstances. Only helpful, relevant keywords that emphasize the image should be used.
If an image has no relevance for image search, it's not necessary to add alt text for SEO purposes. However, you might consider adding one anyway to improve the website's accessibility.
Example:
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