PSB file contains a large Photoshop document project, of size larger then 30 000 by 30 000 pixels, saved in proprietary format developed by Adobe. PSB can store images up to 300 000 by 300 000 pixels. For smaller projects the PSD format is used. Both format are native to Photoshop and are quite similar in structure, yet PSB format offers features that make it suitable for larger images. Detailed specification for PSB is available on Adobe website. PSB file structure contains the following main sections:
PSB can be as large as 2GB and bigger. Similar to PSD file, PSB stores a project data container that may store such data and information as:
PSB files can store the same project data as PSD files. PSB Large Document format is not supported by Adobe Photoshop by default and must be activated from preferences menu in File Handling pane. Project saved in PSB file must be exported to appropriate format is order to open it in given application
Below you will find an index of software programs that can be used to open PSB files divided into 2 categories according to system platform supported. Files with PSB suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.
There can be multiple causes why you have problems with opening PSB files on given system. Fortunately, most common problems with PSB files can be solved without in-depth IT knowledge, and most importantly, in a matter of minutes. The list below will guide you through the process of addressing the encountered problem.
The most common reason for such problems is the lack of proper applications that supports PSB files installed on the system. This one is an easy one. Select Adobe Photoshop or one of the recommended programs (for example, Adobe Creative Suite, Adobe Creative Cloud) and download it from appropriate source and install on your system. Above you will find a complete listing of programs that support PSB files, classified according to system platforms for which they are available. The safest method of downloading Adobe Photoshop installed is by going to developer’s website (Adobe Systems Incorporated) and downloading the software using provided links.
You still cannot access PSB files although Adobe Photoshop is installed on your system? Make sure that the software is up to date. Software developers may implement support for more modern file formats in updated versions of their products. This can be one of the causes why PSB files are not compatible with Adobe Photoshop. The most recent version of Adobe Photoshop is backward compatible and can handle file formats supported by older versions of the software.
After installing Adobe Photoshop (the most recent version) make sure that it is set as the default application to open PSB files. The method is quite simple and varies little across operating systems.
Selecting the first-choice application in Windows
Selecting the first-choice application in Mac OS
If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the PSB file in question. Being unable to access the file can be related to various issues.
If the PSB is indeed infected, it is possible that the malware is blocking it from opening. Immediately scan the file using an antivirus tool or scan the whole system to ensure the whole system is safe. If the PSB file is indeed infected follow the instructions below.
Did you receive the PSB file in question from a different person? Ask him/her to send it one more time. The file might have been copied erroneously and the data lost integrity, which precludes from accessing the file. If the PSB file has been downloaded from the internet only partially, try to redownload it.
Some files require elevated access rights to open them. Log in using an administrative account and see If this solves the problem.
If the systems has insufficient resources to open PSB files, try closing all currently running applications and try again.
Latest versions of programs and drivers may help you solve problems with Photoshop Large Document Format files and ensure security of your device and operating system. It is possible that one of the available system or driver updates may solve the problems with PSB files affecting older versions of given software.
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