Smart Lasso lets you draw a line around an object to select it while intelligently excluding the background. However if you use Preview to perform Instant Alpha on the image, it can be saved in many formats for use in other projects, including websites, social media, iPhoto cards or calendars, email, and a lot more.Īnother advantage of using Preview is the option to use selection tools called “Lasso” and “Smart Lasso.” Lasso lets you draw a circle (or any other shape) around and object to isolate it from the rest of the photo. The image you create will be part of the Pages document or Keynote project you created. If you are making a Pages document or Keynote presentation and only plan to use the image in that document, you can just use Pages or Keynote. This can be done in Preview, Pages, or Keynote. Removing an object from its background with Instant Alpha Depending on what kind of image you want to create, you can really do quite a bit using Preview, Pages and a few other tips and tricks. They can be imported into iPhoto, cropped and used in books, calendars, or especially to customize a birthday or greeting card. Images created in this way could be used for anything, including fun social media posts. In this article, you’ll learm how to use Instant Alpha and Smart Lasso to create custom images, remove an object from its background, and some advantages of using Preview to create custom images. As we’ve written recently in articles about signatures and marking up images, Preview has a lot of capabilities that don’t get much press.

You can find this feature in apps like Pages and Keynote, as well as the Preview app that comes built-in on Macs. As you may know, Instant Alpha is a feature that allows you to remove an object in an image from its background.

Crop picture in preview mac os