Low-level function to create image sub-sizes.
big_image_size_threshold
Filters the “BIG image” threshold value.
wp_create_image_subsizes
Creates image sub-sizes, adds the new data to the image meta `sizes` array, and updates the image metadata.
_wp_image_meta_replace_original
Updates the attached file and image meta data when the original image was edited.
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wp_update_image_subsizes
If any of the currently registered image sub-sizes are missing, create them and update the image meta data.
wp_get_missing_image_subsizes
Filters the array of missing image sub-sizes for an uploaded image.
wp_get_missing_image_subsizes
Compare the existing image sub-sizes (as saved in the attachment meta) to the currently registered image sub-sizes, and return the difference.
_copy_image_file
Copy an existing image file.
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load_image_to_edit_attachmenturl
Filters the image URL if not in the local filesystem.
load_image_to_edit_path
Filters the returned path or URL of the current image.
load_image_to_edit_filesystempath
Filters the path to the current image.
_load_image_to_edit_path
Retrieve the path or url of an attachment’s attached file.
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load_image_to_edit
Filters the current image being loaded for editing.
load_image_to_edit
Load an image resource for editing.
file_is_displayable_image
Filters whether the current image is displayable in the browser.