The marquee tools let you select rectangles, ellipses, and 1‑pixel rows and columns.
Sets a height-to-width ratio. Enter values (decimal values are valid) for the aspect ratio. For example, to draw a marquee twice as wide as it is high, enter 2 for the width and 1 for the height.
Specifies set values for the marquee’s height and width. Enter pixel values in whole numbers.
In addition to pixels (px) you can also use specific units such as inches (in) or centimeters (cm) in height and width values.
- For aligning your selection to guides, a grid, slices, or document bounds, do one of the following to snap your selection:
- With the Rectangular Marquee tool or the Elliptical Marquee tool, drag over the area you want to select.
- Hold down Shift as you drag to constrain the marquee to a square or circle (release the mouse button before you release Shift to keep the selection shape constrained).
Dragging a marquee from the corner of an image (left), and from the center of an image (right) by pressing Alt/Option as you drag
- To drag a marquee from its center, hold down Alt (Windows) or Option (Mac OS) after you begin dragging.
- With the Single Row or Single Column Marquee tool, click near the area you want to select, and then drag the marquee to the exact location. If no marquee is visible, increase the magnification of your image view.
To reposition a rectangular or elliptical marquee, first drag to create the selection border, keeping the mouse button depressed. Then hold down the spacebar and continue to drag. Release the spacebar, but keep the mouse button depressed, if you need to continue adjusting the selection border.