2 add full paragraph from cited source
source | link

We should run the catalog images command: php bin/magento catalog:images:resize.

Situations where this could be necessary might be:

  • After you import products, which might have images of various sizes
  • If images were resized or deleted manually from cache

Each image assigned to a product must be resized in accordance with image metadata defined in a module’s view.xml configuration file. After you import productsresizing an image, which might have images of various sizesits resized copy is stored in the cache

If(/pub/media/catalog/product/cache directory). Magento serves storefront images were resized or deleted manually from cache.

ReadSource and more information here: herehttp://devdocs.magento.com/guides/v2.0/frontend-dev-guide/themes/theme-images.html#resize-catalog-images.

We should run the catalog images command: php bin/magento catalog:images:resize.

Situations where this could be necessary might be:

After you import products, which might have images of various sizes

If images were resized or deleted manually from cache

Read more here.

We should run the catalog images command: php bin/magento catalog:images:resize.

Situations where this could be necessary might be:

  • After you import products, which might have images of various sizes
  • If images were resized or deleted manually from cache

Each image assigned to a product must be resized in accordance with image metadata defined in a module’s view.xml configuration file. After resizing an image, its resized copy is stored in the cache (/pub/media/catalog/product/cache directory). Magento serves storefront images from cache.

Source and more information here: http://devdocs.magento.com/guides/v2.0/frontend-dev-guide/themes/theme-images.html#resize-catalog-images

1
source | link

We should run the catalog images command: php bin/magento catalog:images:resize.

Situations where this could be necessary might be:

After you import products, which might have images of various sizes

If images were resized or deleted manually from cache

Read more here.