Do one of the following:

• To align multiple layers, select the layers with the Move tool or in the Layers panel, or select a group.

• To align the content of one or more layers to a selection border, make a selection in the image, and then select the layers in the Layers panel. Use this method to align to any specified point in the image.

Choose Layer > Align or Layer > Align Layers To Selection, and choose a command from the submenu. These same commands are available as Alignment buttons in the Move tool options bar.

Aligns the top pixel on the selected layers to the topmost pixel on all selected layers, or to the top edge of the selection border.

Aligns the vertical center pixel on each selected layers to the vertical center pixel of all the selected layers, or to the vertical center of the selection border.

Aligns the bottom pixel on the selected layers to the bottommost pixel on selected layers, or to the bottom edge of the selection border.

Aligns the left pixel on the selected layers to the left pixel on the leftmost layer, or to the left edge of the selection border.

Aligns the horizontal center pixel on the selected layers to the horizontal center pixel of all the selected layers, or to the horizontal center of the selection border.

Aligns the right pixel on the linked layers to the rightmost pixel on all selected layers, or to the right edge of the selection border.

Select three or more layers.

Choose Layer > Distribute and choose a command. Alternatively, select the Move tool  and click a distribution button in the options bar.

Spaces the layers evenly, starting from the top pixel of each layer.

Spaces the layers evenly, starting from the vertical center pixel of each layer.

Spaces the layers evenly, starting from the bottom pixel of each layer.

Spaces the layers evenly, starting from the left pixel of each layer.

Spaces the layers evenly, starting from the horizontal center of each layer.

Spaces the layers evenly, starting from the right pixel on each layer.

Distributes horizontal spacing between the layers evenly.

Distributes vertical spacing between the layers evenly.

Copy or place the images you want to align into the same document.

Each image will be in a separate layer. See Duplicate layers.

(Optional) In the Layers panel, create a reference layer by locking it. See Lock layers. If you do not set a reference layer, Photoshop will analyze all the layers and select the one at the center of the final composition as the reference.

Select the remaining layers you want to align.

To select multiple adjacent layers from the panel, Shift-click; To select noncontiguous layers, Ctrl-Click (Windows) or Command-click (Mac OS).

Choose Edit > Auto-Align Layers, and choose an alignment option. For stitching together multiple images that share overlapping areas—for example, to create a panorama—use the Auto, Perspective, or Cylindrical options. To align scanned images with offset content, use the Reposition Only option.

Photoshop analyzes the source images and applies either a Perspective or Cylindrical layout, depending on which produces a better composite.

Creates a consistent composition by designating one of the source images (by default, the middle image) as the reference image. The other images are then transformed (repositioned, stretched, or skewed, as necessary) so that overlapping content across layers is matched.

Reduces the "bow‑tie" distortion that can occur with the Perspective layout by displaying individual images as on an unfolded cylinder. Overlapping content across layers is still matched. The reference image is placed at the center. Best suited for creating wide panoramas.

Aligns images with wide fields of view (vertical and horizontal). Designates one of the sources images (the middle image, by default) as the reference image and spherically transforms the other images so that overlapping content is matched.

Aligns layers and matches overlapping content, without changing the shape of the objects in the image (for example, a circle will still be a circle).

Aligns the layers and matches overlapping content, but does not transform (stretch or skew) any of the source layers.

Automatically corrects for lens defects:

Compensates for a lens defect that causes the edges, especially the corners, of an image to be darker than the center.

Compensates for barrel, pincushion, or fisheye distortion.