Reduce mpo file size

Download and install the latest version of Filestar.
Right click on one or more Mpo file(s) on your desktop and select Convert with Filestar.
Type reduce file size in the search box.
Press Run.

What is .mpo?

Name: Multi Picture Object File
Extension: .mpo
Format: Binary
Category: Raster Image
Developer: Sony
Description: MPO files are a type of image file format used by certain digital cameras, primarily those from Fujifilm, to store multiple images in one file. These files contain two or more JPEG images that have been captured simultaneously, such as those taken in 3D, and are usually used to output 3D images in prints or on compatible displays.
MIME Type: image/vnd.ms-photo