Filters the list of intermediate image sizes.

$default_sizes string[]

An array of intermediate image size names. Defaults are 'thumbnail', 'medium', 'medium_large', 'large'.

The $default_sizes parameter also contains all image sizes registered with add_image_size()

File: wp-includes/media.php. View all references

return apply_filters( 'intermediate_image_sizes', $default_sizes );