The optimization principle of optimizing picture Alt attributes is summarized as follows:
1, for the non-linked picture alt text, should mainly from the perspective of the description of the picture. Although Google reads the text, it is much less important than the text in the text.
Because Google believes that pages that use the ALT attribute are more user-friendly than pages that do not use the Alt attribute, all pictures should be added with the ALT attribute. For those pictures that only have typesetting, you can use the empty alt attribute (alt= "").
ALT text for non-linked pictures also takes into account the keywords on this page, as it may be beneficial to other search engines such as Yahoo.
2, for the linked picture alt text, you should completely from the perspective of optimization, as the link text, add keywords. Note that the key words here should be the key words of the linked pages, not the keywords on this page.
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