If you want to be truly “well rounded” with your Photoshop, Illustrator, and InDesign skills, you need to know how to work with rounded corners in all three programs. So let’s take a look the various methods for creating and editing rounded corners in each application.
Rounded Corners in Photoshop
To create a new rounded rectangle in Photoshop CC, select the Rounded Rectangle Tool (located under the Rectangle Tool), and use the settings in the Options bar to chose a fill, stroke, and corner radius. Then click and drag in the document to set the position, width, and height.
Alternatively, you can just click in the document with the Rounded Rectangle Tool and enter values for width, height, and corner radius in the dialog box. Also note that you can set different radius values for each corner in the dialog box.
To adjust rounded corners after an object has been created, use the Properties panel. Note that the following techniques work for paths and shapes drawn with both the Rectangle Tool and the Rounded Rectangle Tool. And you can select multiple objects to edit their corners simultaneously.
Click on the Live Shape Properties button and enter new radius values in the panel fields. Select the chain icon to make all corner radii the same. Or deselect it and enter different values in the fields.
You can also click and drag on each corner icon in the panel to adjust the values.
If you click the chain to constrain the corner radii after setting mixed corner values, the amount you add or subtract will be applied to all corners.
To apply a new corner radius to all corners at once, enter a value in the All Corner Radius field.
There are also purely pixel-based techniques that you can employ to create rounded effects. For example, you can start with a rectangle and apply Gaussian Blur, followed by a Levels adjustment.