MPO File Extension

Multi Picture Object Format

File Type mpo
Developer CIPA
Popularity
4.6 (35 votes)
Application Adobe Photoshop
Category Raster Image Files
Format Binary

What is a MPO file?

Multi Picture Object Format, identified by the MPO extension, is a Raster Image Files type and includes 575 files.

MPO file support extends to various operating systems, including Mac OS and Windows. When working with MPO files, you can rely on 2 programs, including Adobe Photoshop and MPO Explorer.

Windows

Mac OS

Adobe Photoshop

How to open a MPO file?

If you can’t open a MPO file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.

When it comes to opening and working with MPO files, Adobe Photoshop and MPO Explorer are the top choices for users. To install the updated version of Adobe Photoshop, simply go to the Adobe site and download the installer compatible with all major platforms.

Once the process is complete, Adobe Photoshop should take over as the default application for MPO files.

Set Adobe Photoshop as the default MPO program

Changing Default Programs in Windows

Right-click on your MPO file, then choose the "Open with" option and select "Choose another application" from the available options;
In the pop-up window, select the Adobe Photoshop application;
Check the "Always use this application" checkbox, and then click "OK" to apply the selected application as the default for opening MPO files.

Change Default Program on Mac

Right click or Control + left click on the desired MPO file;
Select "Open in application" and click "Other";
At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
Choose "All Programs" in this menu and search for Adobe Photoshop. Check the box next to "Always open in app" to make it the default program.

Solve problems with MPO files

Rest assured, any issues with MPO files can typically be addressed with simple software adjustments. See the tips below for help.

Why does Adobe Photoshop stop responding or crash intermittently?

Adobe Photoshop crashes can be caused by outdated software. Keep your Adobe products up to date by installing the latest updates.

Restarting your computer will solve many common problems, which is why it’s the first thing you should do before changing any settings related to the software.

What are the best practices for repairing a MPO file that has gone bad?

Use a data recovery program to open the damaged MPO file and from the menu choose "Repair" function to start the repair process. Allow the recovery process to complete, which will automatically repair the damaged raster image files.

What are the warning signs that my MPO file may be corrupted?

Common indications of damaged MPO raster image files are:

Error messages appear during the course of working with the file;
Editing the archive in Adobe Photoshop results in slow or unresponsive behavior;
Opening the file results in an error or a failed attempt;
Unexpected expansion of the total size of the MPO file;
Opening the file in Adobe Photoshop or other programs causes them to hang or crash;

How to edit a MPO file?

To edit MPO files, it is essential to install software that supports not only viewing but also editing the raster image files. Online MPO editors provide limited functionality compared to full-featured software for Multi Picture Object Format.

List of Top MPO editors 2026

Based on the criteria above, here is a selection of MPO editors you can use.

MPO Editor Software	Developer	Platforms	Overall Rating
Adobe Photoshop	Adobe	Windows, Mac OS	4.9 out of 5 (47 reviews)

Convert to and from MPO

If obstacles arise while working with a MPO file, you may convert it to formats like JPG, JPEG, PNG, PSD, JPS or other similar types for smoother handling.

Keep in mind that converting a MPO file may introduce some limitations, but the original format can often be restored.