PSB is the "large document" version of Photoshop's PSD. It allows pictures up to 300,000 pixels on a side (PSD stops at 30,000) and files of any size. Converting gives the flattened picture. PSB files can be saved as AVIF, BMP, EPS, GIF, ICO, JPG, PDF, PNG, PS, PSD, TIFF, WEBP, and most of these conversions run right in your browser, so your pictures stay on your device.
What is a PSB file?
PSB – Photoshop large document. PSB is the "large document" version of Photoshop's PSD. It allows pictures up to 300,000 pixels on a side (PSD stops at 30,000) and files of any size. Converting gives the flattened picture.
How to convert a PSB file
- Click Select File, or drop your .psb files anywhere on this page.
- Pick the format you want next to each file, for example JPG.
- Click Convert, then Download when it's done.
PSB at a glance
| PSB | |
|---|---|
| Compression | Lossless (RLE or ZIP) |
| Transparency | Yes |
| Animation | No |
| Created by | Adobe |
| Best for | Very large Photoshop documents |
Frequently asked questions
What is a PSB file?
PSB is the "large document" version of Photoshop's PSD. It allows pictures up to 300,000 pixels on a side (PSD stops at 30,000) and files of any size. Converting gives the flattened picture.
How do I open a PSB file?
Adobe Photoshop opens PSB files, and so do GIMP and Affinity Photo. To see the picture without them, convert it to PNG or JPG here.
Is converting PSB files free?
Yes. Everyone gets 25 free credits a day, with no account needed. Conversions on our server use one credit per started minute of work, so most cost a single credit. Credits reset at midnight UTC.
Are my PSB files uploaded anywhere?
Pictures up to 200 MB never leave your device: ConvertKitty converts them inside your browser, with ImageMagick compiled to WebAssembly. Only larger files, or formats your browser cannot handle (camera RAW, PostScript, XPS, LibreOffice and Publisher files, and video or audio), are sent to our server, over an encrypted connection, and deleted 72 hours after the conversion. The button says "Upload and convert" whenever that happens.
Just want to look at it?
Convert PSB to
- PSB to AVIF Converter
- PSB to BMP Converter
- PSB to EPS Converter
- PSB to GIF Converter
- PSB to ICO Converter
- PSB to JPG Converter
- PSB to PDF Converter
- PSB to PNG Converter
- PSB to PS Converter
- PSB to PSD Converter
- PSB to TIFF Converter
- PSB to WEBP Converter
Other image converters
- Image Converter
- HEIC Converter
- PNG Converter
- JPG Converter
- WEBP Converter
- TIFF Converter
- PSD Converter
- AVIF Converter
- GIF Converter
- BMP Converter
- CR2 Converter
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