December 24th, 2008

Blog Tip #3 : Always have ALT attribute on Images for SEO

Search Engines are blind. They can’t see what is there in your images when you write a blog post. Hence, they have to solely rely on your content to know what is your blog or website all about.

And when you have a Photo Blog, search Engines have absolutely nothing at all to judge the content of the post. Though they may slightly guess from the filename of the picture in your blog but that’s not the correct way of telling a search engine what is that.

If you know little bit of HTML and have used <IMG> tag then you should also be knowing the importance of ALT attribute in the image. Let say you have a wallpaper image in your blog which is like

<img src="wallpaper.jpg" />

Now you can see, only filename is telling search engine that what image it could be. If an SEO expert is putting the same image, the code will be like

<img src="wallpaper.jpg" ALT="Wallpaper 
of beautiful scenery" />

which is giving clear indication that the image is a wallpaper of beautiful scenery. So now if someone searches beautiful scenery wallpaper, your website may have a chance to show up better SERP.

Advantages of putting ALT attributes in Blog Images

  • Better visibility to search engines.
  • If somehow image is not able to load, then a visitor will see the description of ALT attribute. This will also help when someone is using text based browsers like Lynx.
  • By having ALT attribute you are increasing the keyword density which is very good in terms of SEO.

How to have automatic ALT attributes on images in Wordpress Blog

If you are lazy to put ALT attributes on your images then you can download SEO Friendly Images plugin which will automatically put filename concatenated with Post Title as an ALT and TITLE attribute.

Please note that Windows Live Writer by default puts filename as ALT attribute of every image. So if you are not using any plugin then make sure that you change it manually.

Though I have mentioned little about ALT attributes before also, but as a part of our Blog Tip series, we’ll cover everything in details now.

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