Image SEO refers to that part of on-page search engine optimization which primarily relates to image files. The objective of image SEO is to increase the visibility of a website in addition to better placement in the Google Images search. Moreover, image SEO will improve the TF*IDF ratio. Images usually get optimized for searches, since Google has the world’s largest database of images.
A website is comprised of many different elements. Some of these are visible to users and others, such as the source code, are not. Images are the major visible components of a website next to the text. In the area of e-commerce, for example, the quality of product images and design have a decisive influence on the purchasing behavior of customers. Large stores, such as Zalando, routinely optimize their images. Visible and invisible factors play an equally important role in image optimization.
While the goal of the conventional search engine optimization is oriented toward a website, image SEO aims to achieve a good ranking for the image file.
Similar to on-page optimization for websites, image SEO has different levels, which can be worked on and optimized – the visible level, the meta level, and the image plane itself.
Example: An image of a fir tree. Filename: fir.jpg
Additional data is added with dashes.
Example: Image of a green tomato. Filename: Green-tomato.jpg
If you want to promote the indexing of image files, you can save all image URLs in a separate XML sitemap and upload it to the Google Search Console.
Another important factor in image optimization is that the subsequent ranking for a specific keyword or a group of keywords, of course also depends on the competition. It will consequently be more difficult to rank well with the image of a celebrity under their name if that image has been optimized for the term “la la la” in the image search.
The benefits of SEO images can be outlined in the following bullet points:
Optimized image files do not support a website only in terms of search engine optimization. For example, adjusted file sizes reduce the loading time of a website and thereby affect the user experience positively. Optimized image data is also ideal in terms of accessibility, to give blind users the opportunity to learn all the content of a website, for example.
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