How to stop magento to generate all types of images in cache on page visit

Question

I'm using Magento 2.2.5 and when we visit listing or product page Magento creates the various sizes of images in pub/media/catalog/product/cache/ directory which I don't need except some.

I have checked file vendor/magento/framework/Config/etc/view.xsd but, nothing found related to stop/disable image generation.

As this creates lots of images and acquires disk spaces.

How to disable a particular type of image generation or anyone know the flow of image generation?

Answer 1

After debugging, we found that Magento internally calls various types of images in different files and they are generated.

We have implemented a workaround in the following way.

override all the image type and use the image dimensions which near the dimension we use in

app/design/frontend/Vendor/theme_01/etc/view.xml

and override the file which returns the image-file path hash according to misc-parameters like image's height, width, aspect ratio. We made it according to our requirement.

Magento\Catalog\Model\View\Asset\Image.php

As in our case, we need just a simple image and all other misc params are remain the same in all cases, we made return directory path like '100x90' as a directory name.

thus we get the 100x90 image in the pub/media/catalog/product/cache/100x90 directory

Answer 2

This is a feature of magento

When you upload image for product with specific image sizes, like 1200x1200 and you use it on thumbnail with the size 60x60 and small image like 200x200 and large image like 600x600. It creates cache images according to your given size.

The benefit of this is, user will not suffer in rendering large size images all over the website, it will show small image or thumbnail image on the web page, and that results with the high performance of the website.

Reference: What is the use of Magento 2.2.6 product image cache?