Image guidelines for SEO

Each <img> tag should follow these guidelines for Search Engine Optimization (SEO).


Search engines can interpret and evaluate only text and links; they cannot interpret image files. Search engines use the text in the alt attribute of an <img> tag as supplementary information for the image file. In addition, alt attribute text is used by audio readers for the visually impaired.


Review each <img> tag in the site to make sure that it contains an alt attribute that has text that is relevant to the image.

Check each <img> tag for the following:

See also


Page and site guidelines for SEO
Title guidelines for SEO
Heading guidelines for SEO
Description guidelines for SEO
Keywords guidelines for SEO
Hyperlink guidelines for SEO

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