Using WordPress ‘add_image_size()’ PHP function
The `add_image_size()` function in WordPress allows developers to register a new image size with custom dimensions and cropping behavior
get_post_thumbnail_id()
Using WordPress ‘get_post_thumbnail_id()’ PHP function
The `get_post_thumbnail_id()` function in WordPress retrieves the post thumbnail ID
Using WordPress ’embed_thumbnail_id’ PHP filter
The 'embed_thumbnail_id' filter in WordPress allows developers to customize the thumbnail image used in embedded content.