Add Multiple Artboards in Photoshop
Artboards let you manage multiple canvases in a single Photoshop document. You’ll create your first artboard, add more at the sizes you need, and keep them organized for efficient design and export.

Step-by-step instructions
Create the first artboard
Go to File → New.
Enter the desired Width and Height.
Enable Artboards (if shown in the New Document dialog).
Click Create.
Add additional artboards
Select the Move Tool (V), then choose the Artboard Tool (nested with the Move Tool).
Click the + icons at any edge of an artboard to add a new one of the same size.
Or go to Layer → New → Artboard to create one with a specific size.
Alternatively, you can use File → New again to create a separate document at a different size (separate from the current artboard file).
Resize, rename, and arrange
With the Artboard Tool active, drag an artboard’s edges to resize as needed.
In the Layers panel, double-click an artboard’s name to rename it.
Drag artboards on the canvas to organize your layout.