SDWebImage / SDWebImage

This library provides an async image downloader with cache support. For convenience, we added categories for UI elements like `UIImageView`, `UIButton`, `MKAnnotationView`.
> 💡NOTE: `SD` is the prefix for **Simple Design** (which is the team name in Daily Motion company from the author Olivier Poitrey)
## Features
- [x] Categories for `UIImageView`, `UIButton`, `MKAnnotationView` adding web image and cache management
- [x] An asynchronous image downloader
- [x] An asynchronous memory + disk image caching with automatic cache expiration handling
- [x] A background image decompression to avoid frame rate drop
- [x] Progressive image loading (including animated image, like GIF showing in Web browser)
- [x] Thumbnail image decoding to save CPU && Memory for large images
- [x] Extendable image coder to support massive image format, like WebP
- [x] Full-stack solution for animated images which keep a balance between CPU && Memory
- [x] Customizable and composable transformations can be applied to the images right after download
- [x] Customizable and multiple caches system
- [x] Customizable and multiple loaders system to expand the capabilities, like Photos Library
- [x] Image loading indicators
- [x] Image loading transition animation
- [x] A guarantee that the same URL won't be downloaded several times
- [x] A guarantee that bogus URLs won't be retried again and again
- [x] A guarantee that main thread will never be blocked
- [x] Modern Objective-C and better Swift support 
- [x] Performances!
## For Apple visionOS
From 5.19+, SDWebImage supports visionOS on all Package Managers (include CocoaPods/Carthage/SPM). Upgrade the related tools if you're facing issues.
For 5.18+, SDWebImage can be compiled for visionOS platform. However, it's still in beta and may contains issues unlike the stable iOS UIKit support. Welcome to have a try and report issue.
To build on visionOS, currently we only support the standard Xcode integration.
See `Installation with Swift Package Manager` and `Manual Installation Guide` below.
## Supported Image Formats
- Image formats supported by Apple system (JPEG, PNG, TIFF, BMP, ...), including GIF/APNG animated image
- HEIC format from iOS 11/macOS 10.13, including animated HEIC from iOS 13/macOS 10.15 via SDWebImageHEICCoder. For lower firmware, use coder plugin SDWebImageHEIFCoder
- WebP format from iOS 14/macOS 11.0 via SDWebImageAWebPCoder. For lower firmware, use coder plugin SDWebImageWebPCoder
- JPEG-XL format from iOS 17/macOS 14.0 built-in. For lower firmware, use coder plugin SDWebImageJPEGXLCoder
- 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
> 💡NOTE: For new user
SDWebImage use Coder Plugin System to support both Apple's built-in and external image format. For static image we always use Apple's built-in as fallback, but not for animated image. Currently (updated to 5.19.x version) we only register traditional anim