Thumbnails (category)

add_image_size()

Registers a new image size (thumbnail).

delete_post_thumbnail()

Remove a post thumbnail.

get_intermediate_image_sizes()

Gets the available intermediate image sizes.

get_post_thumbnail_id()

Gets the ID of the current (or specified) post thumbnail (featured image). Gets ID of WP attachment (image).

get_the_post_thumbnail()

Gets the IMG tag of the post thumbnail (if exists).

get_the_post_thumbnail_caption()

Gets the post thumbnail caption (description).

get_the_post_thumbnail_url()

Gets the thumbnail URL specified for the post. If there is no post thumbnail, it returns false.

has_image_size()

Check if an image size exists.

has_post_thumbnail()

Check if post has an image attached.

image_get_intermediate_size()

Retrieves the image's intermediate size (resized) path, width, and height.

remove_image_size()

Removes a previously registered image size by it name. The new image size is registered with add_image_size().

set_post_thumbnail()

Set a post thumbnail.

set_post_thumbnail_size()

Registers an image size for the post thumbnail.

the_post_thumbnail()

Display the post thumbnail.

the_post_thumbnail_caption()

Displays the post thumbnail caption.

the_post_thumbnail_url()

Display the post thumbnail URL.

wp_get_additional_image_sizes()

Gets data of all additionally registered image sizes (thumbnails).

wp_get_attachment_thumb_url()

Retrieve URL for an attachment thumbnail.

wp_get_image_editor()

Returns a WP_Image_Editor instance and loads file into it.

wp_get_registered_image_subsizes()

Returns a normalized list of all currently registered image sub-sizes.