What to do with the alt attribute of the site image?

Question

Search Engine Optimization

Hello, please tell me how to be in this situation.
There is a site and there is a layout using an empty alt
But I look on the Internet, many people write that in the design of the site either not to use alt, or leave it empty.
How right?

Answer 1

Alt affects the recognition of images by search engines and their ranking. If you do not need your images to rank, then forget about filling in this tag. But something tells me that picture traffic will not be superfluous for you)

Answer 2

For images as design elements, you can leave the Alt attribute empty, but for images in content, Alt text will not only help rank images, but can also increase the relevance to queries of the entire web page if keywords are correctly written there.