Transformations UI for iOS


  • Xcode 12+
  • Swift 4.2+ / Objective-C
  • iOS 11.0+ / iPadOS 13.0+


Transformations UI for iOS is available in 2 different flavors:

  1. Version with Standard Modules.
  2. Version with Premium Modules (requires a Filestack API key with permission to use this feature.)

The installation procedure will be different depending on what flavor you would like to install.

1. Installing Transformations UI with Standard Modules

  • Add as a Swift Package Manager dependency to your project.

  • Make sure that TransformationsUI.framework is set to Embed & Sign in your app’s target.

2. Installing Transformations UI with Premium Modules

  • Go to and download the latest binary release available.

  • Unzip the file you just downloaded and select everything inside it from the Finder.

  • Drag & drop your selection into Dependencies making sure that Copy items if needed is checked.

  • Select your target, expand Frameworks, Libraries, and Embedded Content and set all the added frameworks to Embed & Sign.


Basic Usage

  1. Import TransformationsUI

    import TransformationsUI
  2. Instantiate TransformationsUI and set delegate

    let transformationsUI = TransformationsUI()
    transformationsUI.delegate = self
  3. Add conformance to TransformationsUIDelegate

    extension ViewController: TransformationsUIDelegate {
        func editorDismissed(with image: UIImage?) {
            if let image = image {
                // TODO: Do something with resulting image...
  4. Present TransformationsUI view controller

    if let editorVC = transformationsUI.editor(with: image) {
        editorVC.modalPresentationStyle = .fullScreen
        present(editorVC, animated: true)

Using Standard or Premium Modules

A newly instantiated TransformationsUI object is configured to use Standard Modules by default.

In order to use Premium Modules instead, first make sure you have downloaded and installed the binary release of TransformationsUI into your project as explained above, and then follow these steps:

  1. Import TransformationsUIShared and TransformationsUIPremiumAddOns

    import TransformationsUI
    import TransformationsUIShared /* newly added */
    import TransformationsUIPremiumAddOns /* newly added */
  2. Get your Filestack API key ready, you will need it for next step.

  3. Instantiate TransformationsUI using a custom Config object

    let modules: TransformationsUIShared.EditorModules
    do {
        let premiumModules = try PremiumModules(apiKey: "YOUR-API-KEY-HERE")
        modules = premiumModules
    } catch {
        // Unable to instantiate `PremiumModules`.
        // You may want to double-check that your Filestack account has permissions
        // to use Transformations UI for the API key you have used above.
        // Falling back to `StandardModules`.
        modules = StandardModules()
    let config = Config(modules: modules)
    let transformationsUI = TransformationsUI(with: config)

After that, you may follow the same steps as in the previous section (e.g., set and implement delegate, present view controller, etc.)

Modules Features

This is the current list of features available per module depending on chosen editor modules family.

Standard Modules


  • Rotate (clockwise)
  • Crop
    • Rect
    • Circle

Premium Modules


  • Flip
  • Flop
  • Rotate
    • Clockwise
    • Anticlockwise
  • Crop
    • Rect
      • Freeform
      • Fixed
      • Custom
    • Circle
  • Resize
    • Free/Locked ratio


  • Chrome, Fade, Instant, Mono, Noir, Process, Tonal, Transfer


  • Blur, Brightness, Contrast, Gamma (per RGB component), Hue


  • Font Family
  • Text Color
  • Text Style
    • bold, italic, underline
  • Text Alignment:
    • left, center, right, justify

Enabling or Disabling Modules

Modules may be enabled or disabled programmatically. Let’s see an example:

  1. Defining the available premium modules.

    let premiumModules = try PremiumModules(apiKey: "YOUR-API-KEY-HERE")
    premiumModules.all = [

Enabling or Disabling Module Features

Module features may be enabled or disabled programmatically. Let’s see a few examples:

  1. When using StandardModules, you want to allow circle cropping but disallow rect cropping.

    let standardModules = StandardModules()
    standardModules.transform.cropCommands = [
        StandardModules.Transform.Commands.Crop(type: .none),
        StandardModules.Transform.Commands.Crop(type: .circle)
  2. When using StandardModules, you don’t want any extra commands (e.g. rotation) to be available.

    let standardModules = StandardModules()
    standardModules.transform.extraCommands = []
  3. When using PremiumModules, you want to define custom crop modes.

    let premiumModules = try PremiumModules(apiKey: "YOUR-API-KEY-HERE")
    // Keep original ratio
        PremiumModules.Transform.Commands.Crop(type: .rect, aspectRatio: .original)
    // Keep 16:9 ratio
        PremiumModules.Transform.Commands.Crop(type: .rect, aspectRatio: .custom(CGSize(width: 16, height: 9)))
  4. When using PremiumModules, you want to redefine the available filters in filters module.

    let premiumModules = try PremiumModules(apiKey: "YOUR-API-KEY-HERE")
    premiumModules.filters.commands = [
        PremiumModules.Filters.Commands.Filter(type: .chrome),
        PremiumModules.Filters.Commands.Filter(type: .process),
        PremiumModules.Filters.Commands.Filter(type: .instant)
  5. When using PremiumModules, you want to add extra available font families to text module.

    let premiumModules = try PremiumModules(apiKey: "YOUR-API-KEY-HERE")
    premiumModules.text.availableFontFamilies.append(contentsOf: ["Optima Regular", "Symbol"])

    Or you may want to replace available font families completely:

    premiumModules.text.availableFontFamilies = ["Optima Regular", "Symbol"]

To discover other module features that may be configured, enabled or disabled, try Xcode’s autocompletion with your StandardModules or PremiumModules objects.


Check the demos showcasing using Transformations UI with either Standard or Premium modules.