Design the Page with Photoshop Open Photoshop, click on the "File" menu and select "New." Choose "pixels" as your unit of measurement and then type in the desired width and height for your Web page.

1. Open the Photoshop app and click on "File" at the top menu bar followed by "Open…" to select your image. If you're using a Mac, you can also drag the image over the Photoshop icon to quickly ...