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Step 2.12: Images

Step 2.12: Images

Basic Concepts | On-Page | Content

 

Direct Ranking Factor: Weak

Images are a great way to improve a page visually. Help the user with a visual format for your content, and provide an opportunity to improve your SEO at the same time.

Images can be optimised for target keywords and like other on page components, can reinforce the theme of the page.

There are a few components to images, that you should be aware of from an SEO perspective:

Image Alt Attributes

Alt tags or alt attributes are text alternatives to images, they are used if an image is unable to be loaded or rendered by the browser. Hovering over an image on a page with the mouse should bring up a text box showing the contents of the alt tag.

You can specify what this text is within the code:

<img alt="image optimization" src="http://example.com.au/image.jpeg" title="video optimization">

The part highlighted above, in bold, shows what the alt attribute is and here it sits in the code that defines and image.

Image Filename

In the example below we have highlighted, in bold text, the filename of an image:

<img alt="image optimization" src="http://example.com.au/image.jpeg" title="video optimization">

Image File Size

Images can be large in file size, we measure this in Kb (Kilobytes) or Mb (Megabytes), images should not be more than a couple of hundred Kb at the maximum.

File size impacts load times, and this is a hugely important direct algorithmic ranking factor due to its impact on the user experience.

 

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