How to view a .PSB file online
No app, no account, no upload.
Open your .PSB
Drag a .PSB file of any size onto the viewer, or choose it from your device. It's read right here.
View the layers
Every layer and group is listed with a thumbnail, blend mode and opacity. Click the eye to hide or show it and watch the image update.
Export what you need
Save the whole image as PNG, JPG or WEBP, or download any single layer as a transparent PNG.
What is a .PSB file?
Everything worth knowing about Adobe Photoshop Large Document Format (PSB).
A PSB file is a Photoshop document in the Large Document Format (Photoshop Big), the same layered format as PSD but built for huge files up to 300,000 x 300,000 pixels and over 2 GB. Open it in Adobe Photoshop, or free in Photopea (browser, layers intact) or GIMP. To share it, export a flattened copy to TIFF, PNG, or JPG.
Programs that open .PSB files
- Windows
- Adobe Photoshop, GIMP, Affinity Photo, Photopea
- macOS
- Adobe Photoshop, Affinity Photo, Photopea
- Linux
- GIMP, Photopea
- Web
- Photopea
| Full name | Adobe Photoshop Large Document Format (PSB) |
|---|---|
| Developer | Adobe Inc. (Adobe Systems) |
| First released | 2002 (Photoshop 7.0, with the 'Large Document Format' / Big option) |
| Category | Images |
| MIME type | image/vnd.adobe.photoshop |
| Signature | 38 42 50 53 ("8BPS" - same signature as PSD; version field at offset 4 distinguishes PSB) |
Related viewers
More free tools for images and graphics.
Frequently asked questions
Do I need Photoshop to open a .PSB file?
No. This viewer reads your .PSB file directly: the finished image and every layer, without Adobe software or an account.
Is my design uploaded anywhere?
No. The file is decoded with a JavaScript reader.
Why does the image change slightly when I hide a layer?
At first you see Photoshop's own saved composite, which is exact. When you toggle layers we rebuild the image in the browser. Adjustment layers, layer effects and a few blend modes can't be reproduced exactly yet, and the panel tells you which.
Can I extract a single layer?
Yes. Click a layer's name, then Download this layer as PNG. You get the layer's pixels with transparency, at full resolution.
Why can't I open my PSD?
Very old PSDs, CMYK and Lab documents, or files saved without Maximize Compatibility and with unusual layer types may not open yet. You'll see what we detected and why.
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