PSB stands for Photoshop Big. It's the same layered structure as PSD, with larger size limits: documents up to 300,000 pixels on a side and files bigger than 2 GB.

Can I convert PSB to PSD?

Yes, if the document fits PSD's limits. Open the PSB in PS Online and choose File › Save to write a PSD, or export a PNG or JPEG.

Open PSB files online

PSB is Photoshop's Large Document Format, used for files over 2 GB or wider than 30,000 pixels. PS Online opens PSB files in your browser so you can inspect layers and export what you need.

Open the editor, freeNo signup · Nothing uploaded

PSB vs PSD

PSB and PSD store the same things: layers, masks, adjustment layers, styles and type. The difference is size. PSD tops out at 2 GB and 30,000 × 30,000 pixels; PSB goes far beyond that. You'll see PSB files for large-format print, panoramas, game art and huge mockups.

How to open a PSB online

Open the editor in a desktop browser.
Drag the .psb onto the window, or choose File › Open.
Browse layers, make edits, then save as PSD or export.

Everything is processed locally in your browser, which is also why very large documents depend on your computer's memory. Close other tabs for the best results.

Everything else you can do

Once it's open, a PSB behaves like any PSD in PS Online: toggle layers, edit type, adjust colors, remove backgrounds and export the result.

Questions

What is a PSB file?: PSB stands for Photoshop Big. It's the same layered structure as PSD, with larger size limits: documents up to 300,000 pixels on a side and files bigger than 2 GB.
Can I convert PSB to PSD?: Yes, if the document fits PSD's limits. Open the PSB in PS Online and choose File › Save to write a PSD, or export a PNG or JPEG.

Keep reading

Open PSD files Online PSD editor Open TIFF files Photoshop for Linux Open HEIC files

Open an image and start editing

No download, no account. Your first edit is a click away.

Open the editor