Clipping masks in Photoshop can be "cropped" by applying a clipping mask, this will visually crop the image, but the original image will still be there unless further steps are taken. Here's how it works:
Understanding Clipping Masks in Photoshop
A clipping mask in Photoshop uses one layer (the mask) to define the visible area of another layer (the image). The shape of the mask determines what portion of the image layer is visible.
How to "Crop" Using a Clipping Mask:
The reference provided actually applies to Adobe Illustrator, however the principle for "cropping" by using a clipping mask is similar in Photoshop. Instead of truly cropping, the image's view is restricted to the shape of the clipping mask. To create this effect:
- Create or import your Image: Start by having your image and the shape you wish to use as your mask.
- Position layers: Place the layer with your image on top of the shape layer.
- Create the clipping mask:
- In the Layers Panel, right-click on the image layer.
- Select "Create Clipping Mask". The image layer will be clipped to the shape of the layer below it. This essentially crops the image based on the shape.
Key Points to Remember:
- Visual "Crop": The visual effect will be a "cropped" image. However, the actual image data outside of the mask remains.
- Non-Destructive: Clipping masks are non-destructive, meaning the original image remains unchanged. You can release the mask to bring the entire image back into view.
- Flexibility: You can easily adjust the mask or move the image layer within the mask for creative control.
Permanent Cropping (Rasterization and Actual Cropping)
If you need to permanently crop and reduce file size as referenced in the source regarding Adobe Illustrator, the following steps can be done in Photoshop as a secondary process:
-
Rasterize the Layer: If the clipped layer is a smart object, you will need to right-click on the clipped image layer and select Rasterize Layer. This will turn the smart object into a pixel layer.
-
Create a new layer from a selection: Using the shape of the clipping mask, use the magic wand to select inside of the clipping mask boundary, in a layer directly above the clipped image layer. Next go to
Edit>CopythenEdit>Paste. -
Delete the original layer: Delete the original clipped image layer.
- This effectively makes the image have a permanent cropping.
Table: Summary of "Cropping" with Clipping Mask
| Action | Description | Outcome | Destructive? |
|---|---|---|---|
| Create Clipping Mask | The image layer is restricted to the shape of another layer below it in the layer panel. | A visual "crop" of the image based on the mask shape. | No |
| Rasterize and copy shape | Rasterize the image layer, select the shape of the clipping mask boundary and copy/paste this selection to a new layer before deleting the original layer | Permanently cropped image. | Yes |
By understanding how clipping masks work, and further steps to create permanent cropped images, you can effectively manage the visibility of your images.
