SEO Glossary: Image SEO

In a nutshell: What is image SEO?

Image SEO (mainly known as image SEO) is part of on-page optimization. These are special optimization measures that relate purely to images. The aim of image SEO is to achieve better rankings in the Google image search. This results in more reach and visitors.

What is image SEO?

If webmasters want to do SEO, the on-page search engine optimization is an important factor. It describes all measures that take place directly on the website. Image SEO is also a component of OnPage, which should not be neglected under any circumstances.


Unfortunately, many SEOs ignore this point. However, when done correctly, image SEO offers many great results. It can be used to achieve good rankings in Google Image Search, which results in a higher reach and therefore more visitors.


Google also recognizes it as positive when images are described in a relevant way and thus give users added value. This has a positive effect on the overall on-page SEO.


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Why is image SEO so important?

A website needs pictures! Because without them, it is difficult or even impossible to imagine. It's not for nothing that they say: "A picture is worth a thousand words". If users are looking for a factual text, the image is a way of enriching it or even passing on important information in the form of diagrams. But online stores also benefit from images when they present pictures of their products.


With the help of image SEO, webmasters try to optimize their image files so that they are displayed higher up in the Google image search. But image SEO also plays an important role in terms of relevance.


Example: A subpage is optimized for the topic "Travel to the USA". To positively influence the user experience, beautiful images of the USA are inserted. Include the file name of the image, title and the ALT-ATTRIBUT contain keywords that match the topic of USA travel, this is an important signal to search engines. Because this shows relevance.


What needs to be considered with image SEO?

Important factors and aspects for image SEO are listed below:


  • File format: Image file formats such as JPEG, JPG, PNG or GIF are recommended
  • File size: An image URL or file should be quickly recognized and crawled by a Googlebot. It is therefore important to keep the image size moderate and never too large. A rough guide is 150 kB.
  • File name: It is very important and indicates what can be seen in the image. The image name also reflects the relevance of a page, which is very useful for the search engine.
  • Content environment: If the inserted image deals with a specific topic, the content around it should also match it. So if the image shows a car tire, the text should also match it.
  • ALT attribute: If an image cannot be loaded for a technical reason, the content of the image is still displayed. In the best case, the ALT attribute contains the keyword of the page.
  • Image title: The title should also describe the image topic and also contains the keyword.


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Conclusion: What is image SEO?

To show relevance to search engines and provide website visitors with a positive user experience website visitors, image SEO is indispensable. Image SEO has become an important part of on-page optimization and should not be neglected. With the right image SEO, it is possible to rank higher in Google Image Search to achieve greater reach.

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