# PhotoshopElements

# Merge layers

Layers can greatly increase the file size of an image. Merging layers in an image reduces file size. You should merge layers only after you have finished manipulating them to create the image you want.

Example of merging

You can choose to merge only the linked layers, only the visible layers, only a layer with the layer below it, or only selected layers. You can also merge the contents of all visible layers into a selected layer, yet not delete the other visible layers (in this case, there is no reduction in file size).

When you complete work on an image, you can flatten it. Flattening merges all visible layers, discards all hidden layers, and fills transparent areas with white.

1. Go to the Layers palette and make sure that an eye icon appears next to each of the layers you want to merge.
2. Do one of the following:

   - To merge selected layers, select more than one layer by holding down the Command key and clicking each layer. Then choose Merge Layers from the Layers palette More menu.

   - To merge a layer with the one below, select the top layer of the pair and choose Merge Down from either the Layer menu or the Layers palette More menu.

     Note: If the bottom layer in the pair is a shape, type, or fill layer, you must simplify the layer. If the bottom layer in the pair is linked to another layer or is an adjustment layer, you can’t choose Merge Down.

   - To merge all visible layers, hide any layers you don’t want to merge and choose Merge Visible from the Layer menu or Layers palette More menu.

   - To merge all visible linked layers, select one of the linked layers and choose Merge Linked from the Layer menu or Layers palette More menu.

     Note: If the bottom-most merged layer is a type, shape, solid color fill, gradient fill, or pattern fill layer, you must first simplify the layer.

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- Merging adjustment layers
- Simplify a layer

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