Software & Apps File Types What Is an XP3 File? How to open, edit, & convert XP3 files Share Pin Email Print File Types Design Cryptocurrency MS Office Windows Linux Google Drive Apps File Types Backup & Utilities View More By Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated January 17, 2020 A file with the XP3 file extension is a KiriKiri Package file. KiriKiri is a scripting engine; the XP3 file is often used with visual novels or for storing video game resources. Inside an XP3 file may be images, audio, text, or any other resource that would be useful during gameplay or for a visual representation of a book. These files are stored in the XP3 file like an archive, similar to ZIP files. XP3 is sometimes used as an abbreviation for service pack 3 of Windows XP. However, files that have the .XP3 file extension doesn't have anything to do with any operating system, in particular, even Windows XP. How to Open an XP3 File KiriKiri Package files with the XP3 extension can be opened with KiriKiri Tools. If the XP3 file doesn't open with that program, try using a free file extractor to extract the contents out of the XP3 file. You'll most likely see an EXE file that you can run like a regular application. A program like 7-Zip or PeaZip should be able to open an XP3 file in this way. If a file unzip tool won't open the XP3 file, you might try CrassGUI. There are instructions on the download page that explain how to open the XP3 file. In all of these examples for opening an XP3 file, the end result may be that you have to copy the extracted files into a certain folder. For example, if the XP3 file is used with a particular video game, you might have to extract the files from the XP3 archive and then copy them to the game's installation folder in order for the game to use them. If you find that an application on your computer tries to open the XP3 file but it's the wrong application or you'd rather have another installed program open XP3 files, you can change the default program for a specific file extension in Windows. How to Convert an XP3 File More popular file types can be converted to other file formats with a free file converter. For example, a file converter can be used to convert PDF files to DOCX, MOBI, PDB, etc., but we're not aware of any that work with XP3 files. However, one thing you might try if you need to convert an XP3 file is to use the KiriKiri Tools program mentioned above. If it's possible with that program, the option for converting the file might be in a File > Save As menu or an Export menu option. Still Can't Open the File? XP3 files share some of the same file extension letters as ZXP, XPD, and XPI files, but that doesn't mean those file formats have anything to do with each other. If you can't open your file, you might double-check that you're reading the extension correctly and not confusing one of those formats with the XP3 format.