Whether you're applying a circular crop to user avatars or just resizing a photo downloaded from a web service, processing images can be a bit of a chore. Toucan is a Swift image processing library from Gavin Bunney that makes working with images a breeze.

Let's import Toucan and take a look at what it can do:

Resize Images

// userAvatar is a UIImage downloaded from the network

let resizedAvatar = Toucan.Resize.resizeImage(
    myImage,
    size: CGSize(width: 100, height: 100)
)

Apply a Circular Mask

let circularAvatar = Toucan.maskWithEllipse(resizedAvatar)

Apply a Rounded Rectangle Mask

let roundedAvatar = Toucan.maskWithRoundedRect(height: 5)

Image Borders & Method Chaining

Toucan provides another syntax for chaining different processing steps together. Just call .image at the end to get a final processed UIImage. Here we can also see how to apply a 1 point wide border to the final image.

Toucan(image: userAvatar)
  .resize(CGSize(width: 100, height: 100))
  .maskWithEllipse(
    borderWidth: 1, 
    borderColor: UIColor.lightGrayColor()
  )
  .image

More info about Toucan can be found at git.io/toucan