“Adding images to your articles encourages people to read them, and well-chosen images can also back up your message and get you a good ranking in image search results.”
–Joost de Valk, founder & CEO of Yoast
Images are important for your content – but did you know they can also improve your Search Engine Optimization (SEO)? We have previously explained what alt tags are and how to update them.
How can image alt tags improve my SEO?
Every time you add an image to your content, you should add an alt tag to it in relation to your content. When you first upload an image to a page, you can add an alt tag directly. This gives it a default tag to use every time you insert the image. You might use a description, as in this image below, “happy family with baby.” This would help people using screen readers to understand what your image looks like and the purpose it serves in your content, and one of the main purposes of alt tags is improving accessibility.
You can also add some keywords that will help people find your page. If the page is about a new housing complex, you might say, “Family with baby is happy in their new Mountainview home” to give search engines a clearer understanding of what your image and your page are about.
Note: Do NOT try to stuff keywords into the alt tag, like this: “Family with baby, Mountainview home, new apartment complex, Colorado, Mountainview condos, Mountainview housing complex”. That is frowned upon by search engines and may actually cause your site to drop in rankings. Keep it simple and descriptive.
If you use an existing image on a different web page, you can use a different alt tag on that page. To do so, insert your image. Then click on the pencil icon to edit it.
Replace the existing alt tag with one that better fits your page:
For more information about alt tags, read Yoast’s comprehensive overview of alt tags over on Yoast.com. Mozilla also provides some tips for alt text here.