.IPLB File Extension
File TypeiPhoto Library Archive Document
What is an IPLB file?
Library file created by iPhoto, an image organizer and editor; contains data referenced by iPhoto's Library feature; not meant to be manually opened.
iPhoto organizes images you import and enables you to edit and crop them. Some editing features include enhancing, red-eye removal, and retouching. iPhoto can also hold videos but cannot edit them.
NOTE: iPhoto was discontinued and replaced by Photos in 2015.