The alt and title tags associated with your images are used to give information about that image to both humans and is important for Search Engine Optimisation.
An alt tag, or alternative text, is the text that will displayed to assist visually impaired users or generally if the image can’t load for some reason, and is also used by Search Engines to understand this type of content. The alt text should describe the content of the image accurately, but not be too long.
The image title offers advisory information about that image. It is displayed in a “tool tip” when you hover your cursor over the image. The search engines do not read this, but it may be helpful to your website's visitors.
When uploading an image to the "Images" area of your account, the filename of your image will be used as your image's title by default. You can change this by following the steps below:
To add an alt tag to an image, it will first need to already be placed on one of your web pages. You can then add an alt tag using the steps below:
You can also add an alt tag to your product images: