Intuitive and powerful Auto Layout library

What's New

Align 3.2

  • Remove deprecated .base property
  • Increase the minimum supported Xcode version to 14.3
  • Increase the minimum supported platforms to iOS 13.0, tvOS 13.0, macOS 10.15


The best way to create constraints in code.

  • Semantic. Align APIs focus on your goals, not the math behind Auto Layout constraints.
  • Powerful. Create multiple constraints with a single line of code.
  • Type Safe. Makes it impossible to create invalid constraints, at compile time.
  • Fluent. Concise and clear API that follows Swift API Design Guidelines.
  • Simple. Stop worrying about translatesAutoresizingMaskIntoConstraints and constraints activation.

To give you a taste of what the semantic APIs look like, here is an example: 20, alignment: .center)

pin edges with center alignment


The documentation for Align is created using DocC and covers all of its APIs in a clear visual way. There is also a cheat sheet available that lists all of the available APIs.

Screen Shot 2022-07-13 at 10 08 57 AM


Align Swift Xcode Platforms
Align 3.2 Swift 5.8 Xcode 14.3 iOS 13.0, tvOS 13.0, macOS 10.15
Align 3.0 Swift 5.6 Xcode 13.3 iOS 12.0, tvOS 12.0, macOS 10.14
Align 2.0 Swift 5.1 Xcode 11.0 iOS 11.0, tvOS 11.0, macOS 10.13

Why Align

Align strives for clarity and simplicity by following Swift API Design Guidelines. Although most of the APIs are compact, it is a non-goal to enable the most concise syntax possible.

Align is for someone who:

  • Prefers fluent high-level APIs
  • Doesn't want to depend on big, complex libraries – Align has only ~330 lines of code
  • Prefers to have as little extensions for native classes as possible – Align adds a single property: anchors
  • Doesn't overuse operator overloads, prefers fast compile times
  • Likes NSLayoutAnchor but wishes it had simpler API which didn't require manually activating constraints


  • Swift Tools 5.8.0
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Last updated: Mon May 27 2024 09:05:15 GMT-0900 (Hawaii-Aleutian Daylight Time)