As we are using Atomic Blocks plugin for home page posts grid layout . This block have some limitations on Image Sizes
Atomic Blocks – Posts Grid doesn’t support any custom image sizes defined in Theme to choose.
- On our Recipe Blogger Theme we try to customize it with theme customizer to let you choose image size same as archive image size
- Apperance > Customize > Theme Settings > Site Layout > Atomic Blocks – Use Archive Settings for Thumbnail Size ( By default this is Enabled) so your home image sizes will be same as Archive )
- If you deselect this settings it won’t apply to atomic grid blocks and so whatever image size selected on block settings will be applied to home page blocks.
Below are default options given by atomic blocks you can choose any from it and it will apply when above option for atomic block is not selected.