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SnapKit

A Swift library that makes writing iOS and macOS Auto Layout constraints shorter and easier to read.

GitHub Download 6.0.0
Stars
20.3k
Forks
2k
Licence
MIT
Language
Swift
Last update
4 months ago
Type
Library

What it is

SnapKit is a Swift library for building app screen layouts with Apple's Auto Layout system. Instead of writing long, verbose constraint code, you describe positions and sizes in a short, chained syntax. It is aimed at developers building iOS, macOS, or tvOS apps.

  • Position a view at the center of its parent with a single make.center.equalTo call
  • Set width and height of a view in one line, such as make.width.height.equalTo(50)
  • Create and manage layout constraints inside a view controller's viewDidLoad method

Great for

  • Swift developers building UIKit or AppKit interfaces in code rather than Interface Builder
  • Teams who want more readable Auto Layout code
  • Developers maintaining an existing project that already uses SnapKit

Not ideal for

  • Developers who build their interfaces visually in Storyboards or SwiftUI, since the README only covers code-based Auto Layout
  • Projects that must run on older OS or Xcode versions than the README's stated requirements, because it requires iOS 14.0+, macOS 12.0+, tvOS 14.0+, Xcode 26.0+ and Swift 6.0+
Step-by-step guide: how to use SnapKitInstall, first run, examples, tips and FAQs
SnapKit alternativesMasonry vs SnapKitSnapKit vs SwifterSwiftMaterial vs SnapKit

How to get it

  1. 1

    Install with a package manager

    You'll need: Xcode 26.0+ · Swift 6.0+

    Add SnapKit to Package.swift dependencies

    .package(url: "https://github.com/SnapKit/SnapKit.git", .upToNextMajor(from: "6.0.0"))
  2. 2

    Run it

    • Add the SnapKit package dependency to your project using Swift Package Manager
    • Add import SnapKit at the top of a Swift file
    • Call addSubview on your view, then use snp.makeConstraints to set its layout
    • Build and run the app to see the result
  3. 3

    Get the most out of it

    • Read the official documentation at snapkit.github.io/SnapKit/docs/ for the full set of constraint methods
    • Check the FAQ at snapkit.github.io/SnapKit/faq/ when you hit common questions
    • Use the migration guides linked in the README when upgrading between major versions

Downloads

Source code (.zip)develop branch · straight from GitHubRelease 6.0.0Release notes and sourceOfficial website & docssnapkit.github.io/SnapKit/

Strengths

  • Short, chainable syntax compared with raw Auto Layout constraint code
  • Released under the permissive MIT license
  • Includes an online documentation site and FAQ linked from the README

Trade-offs

  • Requires recent toolchains (Xcode 26.0+, Swift 6.0+), which may not suit older projects
  • The README is brief and focuses on installation and one example, so advanced usage must be learned from the external docs
  • Only supports Apple platforms

How it compares

ProjectStarsTypeLevelUpdatedBest for
SnapKit (this)20.3kLibraryintermediate4 months agoSwift developers building UIKit or AppKit interfaces in code rather than Interface Builder
Masonry18.1kLibraryintermediate3.6 years agoiOS or macOS developers writing Objective-C projects that use Auto Layout in code
SwifterSwift15.3kLibrarybeginner4 days agoSwift developers building iOS or macOS apps who want common helper methods ready to use
NVActivityIndicatorView10.7kLibrarybeginner8 months agoiOS developers who want a ready-made loading indicator with many styles
folding-cell10.2kLibraryintermediate2.5 years agoiOS developers building list screens with expandable items
SDWebImage25.6kLibraryintermediate7 months agoiOS or macOS app developers who need to show remote images in lists or grids

Stats synced from GitHub. The assessment above was drafted with AI from the project's README on 2026-10-29 and may miss recent changes — check the README before relying on a command. MIT licence: free to use, modify and distribute, including commercially, as long as you keep the copyright notice.