efprefix/efqrcode

★ 4,745SwiftAudience · developerComplexity · 2/5Setup · easy

Mindmap

mindmap
  root((repo))
    What it does
      Generate QR codes
      Read QR codes
      Animated QR codes
    Platforms
      iOS and macOS
      watchOS and tvOS
      visionOS
    Output Formats
      PNG JPEG PDF
      GIF APNG MP4
      SVG video
    Customization
      Embed logo or icon
      Custom colors
      Transparency
    Install
      Swift Package Manager
      CocoaPods
      Carthage

mindmap root((repo)) What it does Generate QR codes Read QR codes Animated QR codes Platforms iOS and macOS watchOS and tvOS visionOS Output Formats PNG JPEG PDF GIF APNG MP4 SVG video Customization Embed logo or icon Custom colors Transparency Install Swift Package Manager CocoaPods Carthage

Click or tap to explore — scroll the page freely

Things people build with this

USE CASE 1

Add a branded QR code with your app icon in the center to marketing materials or printed packaging.

USE CASE 2

Scan and decode multiple QR codes from a single image inside an iOS or macOS app.

USE CASE 3

Generate an animated GIF or MP4 QR code for eye-catching social media or digital signage campaigns.

USE CASE 4

Quickly integrate QR code scanning into a Swift app without writing custom camera or image-processing code.

Tech stack

SwiftCoreGraphicsCoreImageCocoaPodsSwift Package Manager

Getting it running

Difficulty · easy Time to first run · 30min

Add via Swift Package Manager or CocoaPods. Demo apps on the App Store let you preview output before integrating.

Open source, free to use and contribute to via pull requests. Exact license type not specified in the explanation.

In plain English

EFQRCode is a Swift library for working with QR codes inside Apple platform apps. It covers two things: generating QR code images and reading (recognizing) QR codes from existing images. It works on iOS, macOS, watchOS, tvOS, and visionOS, and is built on top of Apple's own CoreGraphics and CoreImage frameworks. On the generation side, the library goes beyond plain black-and-white QR codes. You can embed a custom image or icon in the center of the QR code, control colors and transparency, and even generate animated QR codes by feeding in a sequence of frames. The output formats include standard still images (PNG, JPEG, PDF), as well as animated formats like GIF, APNG, SVG video, and MP4. This makes it possible to produce branded or visually distinct QR codes for marketing materials, apps, or physical prints. For recognition, you pass in any image and the library returns whatever QR code content it finds. If there are multiple QR codes in the same image, it returns all of them. The results come back as an array of decoded strings, so you can loop through them in your app. The README recommends using high-contrast color combinations for generated codes, testing any generated code before publishing it, and keeping content size reasonable to avoid generation failures caused by oversized inputs. These are practical notes about QR code reliability in general, not limitations specific to the library. Installation is available via CocoaPods, Carthage, and Swift Package Manager. Demo apps for iOS, tvOS, watchOS, and macOS are available on the App Store so you can explore the library's output before integrating it. The project is open source and accepts pull requests.

Copy-paste prompts

Prompt 1

I'm building an iOS app in Swift and want to generate a QR code with my company logo embedded in the center. Show me how to do this with EFQRCode.

Prompt 2

Using EFQRCode on iOS, write Swift code to scan an image and return all QR code strings found in it.

Prompt 3

How do I create an animated GIF QR code using EFQRCode with a custom background color? Show me the Swift code.

Prompt 4

I need to generate a QR code as a PDF for print using EFQRCode on macOS. Walk me through the steps.

Prompt 5

What are the best practices for generating reliable, scannable QR codes with EFQRCode, color contrast, content length limits, and testing steps?

Open on GitHub → Explain another repo

← efprefix on gitmyhub — every repo by this author, as a profile.

Verify against the repo before relying on details.