Convert PSB to PS online, for free.
Photoshop Big (PSB) files are almost identical to Adobe PSD files, except that it supports files that are much larger. Any Photoshop file over two gigabytes (GB) can be saved as PSB. In addition, PSB can have up to 300,000 pixels, while PSD file is limited to 30,000. PSB supports all of the same Photoshop features as PSD, making it an attractive option for handling large Photoshop files.
Adobe Photoshop is the primary program to use for opening PSB. It is also the best program for converting PSB to another file format, such as GIF, JPG, EPS, PNG, and several other formats. You can also convert a PSB file without using Photoshop with FreeConvert.com converters like PSB to JPG or PSB to PDF.
Developed by: Adobe Inc.
Initial Release: 19 February 1990
Useful links:
https://www.adobe.com/devnet-apps/photoshop/fileformatashtml/#50577409_72092
FreeConvert.com can convert your other files to PS format:
FreeConvert.com can convert your PSB files to these other formats:
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