Photoshop Tutorials - Merging the Layers
Merging the Layers
When you wind up having too many layers and they prevent you from working effectively you can merge some of them into a single layer to easy the navigation around the layers. Layers should be merged when you are finished working with them. You can find the commands that merge the layers in the Layer menu:
Merge Down - this command merges the active layer with the one below it.
Merge Linked - merges the layers that are linked with the active layer.
Flatten Image - merges all layers into the single background image
Merge Visible - merges all visible layers.