This library provides an async image downloader with cache support. For convenience, we added categories for UI elements like `UIImageView`, `UIButton`, `MKAnnotationView`.
- [x] Improved [support for animated images](https://github.com/SDWebImage/SDWebImage/wiki/Advanced-Usage#animated-image-50)
- [x] [Customizable and composable transformations](https://github.com/SDWebImage/SDWebImage/wiki/Advanced-Usage#transformer-50) can be applied to the images right after download
- [x] Expand the image loading capabilites by adding your [own custom loaders](https://github.com/SDWebImage/SDWebImage/wiki/Advanced-Usage#custom-loader-50) or using prebuilt loaders like [FLAnimatedImage plugin](https://github.com/SDWebImage/SDWebImageFLPlugin) or [Photos Library plugin](https://github.com/SDWebImage/SDWebImagePhotosPlugin)
- Support extendable coder plugins for new image formats like BPG, AVIF. And vector format like PDF, SVG. See all the list in [Image coder plugin List](https://github.com/SDWebImage/SDWebImage/wiki/Coder-Plugin-List)
In order to keep SDWebImage focused and limited to the core features, but also allow extensibility and custom behaviors, during the 5.0 refactoring we focused on modularizing the library.
As such, we have moved/built new modules to [SDWebImage org](https://github.com/SDWebImage).
[SwiftUI](https://developer.apple.com/xcode/swiftui/) is an innovative UI framework written in Swift to build user interfaces across all Apple platforms.
We support SwiftUI by building with the functions (caching, loading and animation) powered by SDWebImage. You can have a try with [SDWebImageSwiftUI](https://github.com/SDWebImage/SDWebImageSwiftUI)
- [SDWebImageWebPCoder](https://github.com/SDWebImage/SDWebImageWebPCoder) - coder for WebP image format. Based on [libwebp](https://chromium.googlesource.com/webm/libwebp)
- [SDWebImagePhotosPlugin](https://github.com/SDWebImage/SDWebImagePhotosPlugin) - plugin to support loading images from Photos (using `Photos.framework`)
#### Integration with 3rd party libraries
- [SDWebImageFLPlugin](https://github.com/SDWebImage/SDWebImageFLPlugin) - plugin to support [FLAnimatedImage](https://github.com/Flipboard/FLAnimatedImage) as the engine for animated GIFs
- [SDWebImageYYPlugin](https://github.com/SDWebImage/SDWebImageYYPlugin) - plugin to integrate [YYImage](https://github.com/ibireme/YYImage) & [YYCache](https://github.com/ibireme/YYCache) for image rendering & caching
#### Make our lives easier
- [libwebp-Xcode](https://github.com/SDWebImage/libwebp-Xcode) - A wrapper for [libwebp](https://chromium.googlesource.com/webm/libwebp) + an Xcode project.
- Read the [SDWebImage 5.0 Migration Guide](https://github.com/SDWebImage/SDWebImage/blob/master/Docs/SDWebImage-5.0-Migration-guide.md) to get an idea of the changes from 4.x to 5.x
- Read the [SDWebImage 4.0 Migration Guide](https://github.com/SDWebImage/SDWebImage/blob/master/Docs/SDWebImage-4.0-Migration-guide.md) to get an idea of the changes from 3.x to 4.x
- Read the [Common Problems](https://github.com/SDWebImage/SDWebImage/wiki/Common-Problems) to find the solution for common problems
- Go to the [Wiki Page](https://github.com/SDWebImage/SDWebImage/wiki) for more information such as [Advanced Usage](https://github.com/SDWebImage/SDWebImage/wiki/Advanced-Usage)
- For details about how to use the library and clear examples, see [The detailed How to use](https://github.com/SDWebImage/SDWebImage/blob/master/Docs/HowToUse.md)
In 5.0, we introduced a brand new mechanism for supporting animated images. This includes animated image loading, rendering, decoding, and also supports customizations (for advanced users).
This animated image solution is available for `iOS`/`tvOS`/`macOS`. The `SDAnimatedImage` is subclass of `UIImage/NSImage`, and `SDAnimatedImageView` is subclass of `UIImageView/NSImageView`, to make them compatible with the common frameworks APIs. See [Animated Image](https://github.com/SDWebImage/SDWebImage/wiki/Advanced-Usage#animated-image-50) for more detailed information.
#### FLAnimatedImage integration has its own dedicated repo
In order to clean up things and make our core project do less things, we decided that the `FLAnimatedImage` integration does not belong here. From 5.0, this will still be available, but under a dedicated repo [SDWebImageFLPlugin](https://github.com/SDWebImage/SDWebImageFLPlugin).
[CocoaPods](http://cocoapods.org/) is a dependency manager for Objective-C, which automates and simplifies the process of using 3rd-party libraries in your projects. See the [Get Started](http://cocoapods.org/#get_started) section for more details.
Swift project previously have to use `use_frameworks!` to make all Pods into dynamic framework to let CocoaPods works.
However, start with `CocoaPods 1.5.0+` (with `Xcode 9+`), which supports to build both Objective-C && Swift code into static framework. You can use modular headers to use SDWebImage as static framework, without the need of `use_frameworks!`:
There are 2 subspecs available now: `Core` and `MapKit` (this means you can install only some of the SDWebImage modules. By default, you get just `Core`, so if you need `MapKit`, you need to specify it).
[Carthage](https://github.com/Carthage/Carthage) is a lightweight dependency manager for Swift and Objective-C. It leverages CocoaTouch modules and is less invasive than CocoaPods.
If this is your first time using Carthage in the project, you'll need to go through some additional steps as explained [over at Carthage](https://github.com/Carthage/Carthage#adding-frameworks-to-an-application).
> NOTE: At this time, Carthage does not provide a way to build only specific repository subcomponents (or equivalent of CocoaPods's subspecs). All components and their dependencies will be built with the above command. However, you don't need to copy frameworks you aren't using into your project. For instance, if you aren't using `SDWebImageMapKit`, feel free to delete that framework from the Carthage Build directory after `carthage update` completes.
### Installation with Swift Package Manager (Xcode 11+)
[Swift Package Manager](https://swift.org/package-manager/) (SwiftPM) is a tool for managing the distribution of Swift code as well as C-family dependency. From Xcode 11, SwiftPM got natively integrated with Xcode.
SDWebImage support SwiftPM from version 5.1.0. To use SwiftPM, you should use Xcode 11 to open your project. Click `File` -> `Swift Packages` -> `Add Package Dependency`, enter [SDWebImage repo's URL](https://github.com/SDWebImage/SDWebImage.git). Or you can login Xcode with your GitHub account and just type `SDWebImage` to search.
After select the package, you can choose the dependency type (tagged version, branch or commit). Then Xcode will setup all the stuff for you.
If you're a framework author and use SDWebImage as a dependency, update your `Package.swift` file:
<imgsrc="https://raw.githubusercontent.com/SDWebImage/SDWebImage/master/Docs/Diagrams/SDWebImageHighLevelDiagram.jpeg"title="SDWebImage high level diagram">
<imgsrc="https://raw.githubusercontent.com/SDWebImage/SDWebImage/master/Docs/Diagrams/SDWebImageClassDiagram.png"title="SDWebImage overall class diagram">
<imgsrc="https://raw.githubusercontent.com/SDWebImage/SDWebImage/master/Docs/Diagrams/SDWebImageTopLevelClassDiagram.png"title="SDWebImage top level API diagram">
