Registers an image size for the post thumbnail.

Description

See also

• add_image_size(): for details on cropping behavior.

Parameters

$widthintrequired

Image width in pixels.

$heightintrequired

Image height in pixels.

$cropbool|arrayoptional

Image cropping behavior. If false, the image will be scaled (default).
If true, image will be cropped to the specified dimensions using center positions.
If an array, the image will be cropped using the array to specify the crop location:

• 0 string
  The x crop position. Accepts 'left' 'center', or 'right'.
• 1 string
  The y crop position. Accepts 'top', 'center', or 'bottom'.

Default:false

More Information

• To register additional image sizes for Featured Images use: add_image_size() .
• To enable featured images, the current theme must include add_theme_support( 'post-thumbnails' ); in its functions.php file. See also Post Thumbnails.
• This function will not resize your existing featured images. To regenerate existing images in the new size, use the Regenerate Thumbnails plugin.

Source

function set_post_thumbnail_size( $width = 0, $height = 0, $crop = false ) {
	add_image_size( 'post-thumbnail', $width, $height, $crop );
}

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Changelog