View PSB files in your browser
Photoshop's format for work too big for a PSD: panoramas, billboards, maps and huge scans. Open one right here, with every layer and no Photoshop. Nothing leaves your device.
Or drop it anywhere on this page
What you'll see
Your file opens as its app saved it, fitted to your window, with its layers beside it.
- Every layer and group • Hide one or show it alone
- Drag to pan • Pinch or scroll to zoom
- A checkerboard, white or black behind it
- Export • Save the picture, a layer or every layer
About PSB
Adobe added the Large Document Format to Photoshop CS in 2003, for pictures past a PSD's limits of 30,000 pixels a side and 2 GB. A PSB can be 300,000 pixels wide and tall, and as big as a disk holds.
Inside, a PSB is a PSD with room for bigger numbers: the same layers, masks, text, smart objects and flattened picture. Few apps besides Photoshop open it, and the files are often too big to send to a converter site.
Filepeek reads a PSB like a PSD: Photoshop's own picture first, then its layers beside it to hide, show alone or save as PNG. Pictures too big for your device's memory are shown at a smaller size.
Photoshop Large Document Format
.psb
Format
- MIME type
- image/vnd.adobe.photoshop
- Made by
- Adobe
- Released
- 2003
Inside the file
- Layers
- Pixels, text, shapes, groups and adjustments
- Color modes
- RGB, CMYK, gray, Lab, indexed or bitmap
- Bit depth
- 8, 16 or 32 bit
- Size
- Up to 300,000 × 300,000 pixels
Opens in every browser
Browsers can't show PSB files, and download them instead. Filepeek opens them with their layers in Chrome, Edge, Firefox and Safari.
- YouChromeOpens through Filepeek
- YouEdgeOpens through Filepeek
- YouFirefoxOpens through Filepeek
- YouSafariOpens through Filepeek
Questions
How do I open a PSB file without Photoshop?
Drop it on this page or choose Peek a PSB. It opens as Photoshop saved it, with its layers beside it, and nothing to install.
What's the difference between PSD and PSB?
Only the size. A PSB holds pictures past 30,000 pixels a side or 2 GB, which a PSD cannot. Inside, they keep the same layers and picture.
Can I save the picture as PNG or JPEG?
Yes. Choose Export, then Save as PNG or Save as JPEG. A picture too big for your device is saved at the size it shows.
Is my file uploaded?
No. The file opens inside your browser and never leaves your device.