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Repository Overview (README excerpt)
Crawler view📷 **swift-png** 📸 a portable, Foundation-free library for decoding, inspecting, editing, and encoding PNG images documentation · license Requirements The swift-png library requires Swift 5.10 or later. | Platform | Status | | -------- | ------| | 💬 Documentation | | | 🐧 Linux | | | 🍏 Darwin | | | 🍏 Darwin (iOS) | | | 🍏 Darwin (tvOS) | | | 🍏 Darwin (visionOS) | | | 🍏 Darwin (watchOS) | | | 🤖 Android | | Check deployment minimums Getting started To use swift-png in a project, add this descriptor to the list in your file: The library is powered by a native Swift *DEFLATE* implementation, which can be used as a standalone module. Basic usage Decode an image: Encode an image: Features • ***Powerful interfaces.*** swift-png’s expressive, strongly-typed APIs make working with PNG images easy for beginners and advanced users alike. If your code compiles, you’re already most of the way there. Power users can take advantage of custom indexing, manual decoding workflows, and user-defined color targets. • ***Superior compression***. swift-png supports minimum cost path-based *DEFLATE* optimization, which is why it offers four additional compression levels beyond what *libpng* supports. • ***Competitive performance.*** swift-png offers competitive performance compared to *libpng*. On appropriate CPU architectures, the swift-png encoder makes use of hardware-accelerated hash tables for even greater performance. • ***Pure Swift, all the way down.*** swift-png is powered by its own, native Swift *DEFLATE* implementation. It depends only on other Foundation-less, pure-Swift libraries, and therefore does not need to link Foundation. This also means the core components of swift-png work on any platform that Swift itself works on, and that swift-png’s performance improves as the Swift compiler matures. • ***Batteries included.*** swift-png comes with built-in color targets with support for premultiplied alpha. Convolution?hash=O92V) and deconvolution?hash=2SQA0) helper functions make implementing custom color targets a breeze. • ***First-class iPhone optimization support.*** swift-png requires no custom setup or third-party plugins to handle iPhone-optimized PNG images. iPhone-optimized images just work, on all platforms. Reproduce ’s output with bit width-aware alpha premultiplication), for seamless integration anywhere in your application stack. • ***Comprehensive metadata support.*** swift-png can parse and validate all public PNG chunks, which are accessible as strongly-typed metadata records. • ***Modern error handling.*** swift-png has a fully stateless and Swift-native error-handling system. See also • swift-jpeg