What is Preview?
Preview is a simple and elegant application by Apple for viewing and working with images and PDF documents.
With a single click, Preview takes your PDF document full screen for an ideal reading or viewing experience. Quickly select text or images and copy and paste them into other applications. Move individual pages around or delete pages altogether, and combine documents with a drag and drop. Easy-to-use annotation tools let you add markup or editorial comments for sharing with others.
You can also view and edit images. Crop, rotate, resize, and save images in a range of formats. Enhance your image files using several Core Image-powered adjustments for easy control over color, exposure, and sharpness.