What is .WP3 file extension?
Project file created by Photo Story, a program used for creating digital slideshows; contains pictures, effects, captions, audio, and playback settings; used to compile personal photos together for playback in desktop and mobile device video players.
WP3 files may be exported to .WMV files in Photo Story.
You can see a list of software programs here on www.easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.