Fresh, clear, high-quality images should be present on every commercial website. Users interact with content, and they often reject pages with low-quality graphic elements.
For the optimization of the images of the promoted site to be effective, it is necessary to know some nuances of the image ranking algorithm. The logic of a user looking for a suitable image is that he looks first at the image itself, and only then pays attention to the dimensions, text, or link. The image user likes can encourage the user to visit the site, especially if he wants to find the appropriate description.
The first step to promoting images is to match the content of the image and the description. Do not call the picture "Green Elephant" if it depicts a pink panther. It is worth noting that search engines have advanced image scanning algorithms. They were created to filter unwanted content, primarily from adult sites.
If the description of the photo does not match its contents, then this image simply will not receive clicks from the search. Automatically created signatures in the ALT tag must be rechecked.
It is difficult to describe the product in less than 3 words, inserting all the necessary keywords. The upper limit, by the experimental data, does not exceed 250–255 characters.
Similar to the H1 and TITLE headers, the ALT attribute must contain keywords that are important for promoting this image, not the landing page.
Overoptimized and spammed alts can cause the imposition of penalties from Google. Therefore, you do not need to insert all the keywords you need into ALT. Limit yourself to the most necessary keywords which describe images most accurately. Also, you do not need to add the words “buy”, “reviews” or “price” to the alts, unless of course it is a screenshot of reviews or price list, but you can use the word “photo”.
If some pictures on the site are part of the design – logos, buttons and arrows, as well as other decorations, it is better to use empty ALT tags for them. Some optimizers insert keywords here as well, but to no avail. Background images and images that are opened using the script are not indexed.
What to do with the signature in this case? The easiest option is to leave the same description for all photos. This is a normal and frequently used option. The uniqueness of the images themselves is important to the search engine, therefore it is not worth describing each one. You can add to the main text: “View 1”, “View 2" and so on.
<img src="puppy.jpg" alt=""/>
<img src="puppy.jpg " alt="puppy"/>
<img src="puppy.jpg " alt="Dalmatian puppy playing with a stick">
<img src="puppy.jpg" alt="puppy dog puppy puppies small puppies dog retriever labrador wolfhound setter pointer puppy jack russell terrier puppies dog food cheap dog food puppy food"/>
Results for Google