Merge and Flatten are both used to combine layers in Photoshop, but they have some key differences:
Merge :
- Combines selected layers: Merge combines only the layers that you have selected into a single layer. You can choose which layers to merge, leaving others separate.
- Preserves hidden layers: If you have any layers that are hidden (not visible), they will remain hidden after the merge.
- Retains transparency: Merge preserves any transparency in the layers that are merged.
Flatten :
- Combines all visible layers: Flatten combines all visible layers into a single background layer. Any hidden layers will be discarded.
- Fills transparent areas: Flatten fills any transparent areas with white.
- Results in a single layer: After flattening, you will have only one layer in your image.
When to Use Each :
- Merge: Use merge when you want to combine specific layers but need to keep other layers separate or preserve hidden layers. This is useful for organizing your layers or when you want to apply an effect to multiple layers at once.
- Flatten: Use flatten when you're finished editing your image and want to simplify it into a single layer for saving or printing. Flattening can also reduce file size.
