PSB File

What are PSB files and how to open them

Are you having problems opening a PSB file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a PSB file?

A .PSB file is a Photoshop Big Document Format file.

These files are created by Adobe Photoshop and are similar to the more common .PSD file format, but contain images in larger sizes. PSD has a size limit of 30,000 x 30,000 pixels.

PSB is designed to support images larger than .psd limits and can handle images of 300,000 x 300,000 pixels or 2 Gigabytes.

How to open PSB files

We have identified three PSB openers that are compatible with this specific type of PSB file.

Programs that open Photoshop Big Document Format files

Last updated: February 24, 2023

Various apps that use files with this extension

These apps are known to open certain types of PSB files. Remember, different programs may use PSB files for different purposes, so you may need to try out a few of them to be able to open your specific file.

KMPlayerKMPlayerUser submitted
GOM PlayerGOM PlayerUser submitted
Zoner Photo StudioZoner Photo StudioUser submitted
HoneyviewHoneyviewUser submitted
PotPlayerPotPlayerUser submitted
MysticThumbsMysticThumbsUser submitted
WinFAMWinFAMUser submitted
Subtitle WorkshopSubtitle WorkshopUser submitted
PSN8PSN8User submitted
PiranesiPiranesiUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about PSB file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.