Change Log

7.8.1 - Animated <3 Processor (2023-06-19)

Fix

Now the animated image creation from disk cache will use the input processor correctly. #2099 @yeatse

7.8.0 - ImageSource Protocol (2023-06-13)

Add

Introduce a custom image source provider to enable third-party image processors to utilize AnimatedImageView. #2094 @yeatse

Fix

Deprecate the ImageResource and rename it to KF.ImageResource. This triggers a warning when explicitly refering to ImageResource, which conflicts to the identical names from Apple's GeneratedAssetSymbols or DeveloperToolsSupport in Xcode 15. It does not fix the issue automatically, but can help to achieve a smoother transition. #2092 @JohnnyTseng @rtharston

7.7.0 - The Last Chance (2023-05-20)

Add

Expose a new imageDownloader(_:didReceive:completionHandler:) delegate method in ImageDownloaderDelegate to allow making ResponseDisposition decision to the download task. #2048 @onevcat

Fix

Some type conversion warnings which might annoy under Swift 6 compiler. #2060 #2063 @zunda-pixel
Apply access limitation to the internal Source.Identifier. #2074 @iwill-hwang

7.6.2 - Fix Dead Loop (2023-02-23)

Fix

An issue causes high CPU usage and infinite loop when setting nil URL to a KFImage when startLoadingBeforeViewAppear is also true. #2035 Big thanks to @BobbyRohweder
The extension support for CPListItem won't set the image back to blank when the loading failing. Now it keeps showing the placeholder, if set. #2031 @DevVenusK

7.6.1 - Strict for Compiling (2023-02-13)

Fix

A compiling issue that new version of Swift (Swift 5.8) refuses to accept the false-positive optional binding. #2029 @JetForMe

7.6.0 - Content Configuration (2023-02-05)

Add

Add a contentConfigure modifier to KFImage and related view types under SwiftUI. This allows you returning a non-image view to finish the configuation and display it as the loading result of KFImage. #2027
Make the cachePathBlock public so you can also configure it when creating a custom DiskStorage.Config. #2025 by @zarechnyy

7.5.0 - Aggressive New Year (2023-01-08)

Add

Add a KFImage modifier startLoadingBeforeViewAppear to allow image loading before SwiftUI view's onAppear. This is a workaround for #1988.

Fix

Now loading images from local disk also respects the backgroundDecode option. #2009

7.4.1 - Maple Days (2022-10-26)

Fix

A rare crash from _UIImageCGImageContent when loading GIF files on iOS 15 or later. #2004
Now the dSYM symbols are contained inside the xcframework bundle instead of as standalone files. #1998
An issue that the processor is not applied to original image data when DefaultCacheSerializer.preferCacheOriginalData is set to true. #1999

7.4.0 - Summer Ends (2022-10-05)

Add

A data property in RetrieveImageResult for reading the original data when an image loading is done. #1986
An async data getter in ImageDataProvider. More async methods are on the way. #1989

Fix

A workaround for some cases the KFImage does not load images when embedded in the SwiftUI List on iOS 16. This only alleviates the problem when shallow embedded. For deeper nested, waiting for Apple's fix. #1988 FB11564208

7.3.2 - Align Layout (2022-08-10)

Fix

A regression introduced by the previous version, which changed the default layout behavior when setting a placeholder. Now the KFImage should have the same layout behavior as SwiftUI's AsyncImage while loading. if no placeholder is set, it takes all the proposed size while loading. If a placeholder is set, it propose size to the placeholder and follow placeholder's layout. #1975

7.3.1 - Empty Not Void (2022-07-31)

Fix

An issue that EmptyView as KFImage placeholder fails loading of the image. #1973 [@damian-rzeszot]

7.3.0 - Progressive Progress (2022-07-06)

Add

Added ImageProgressive now contains a delegate onImageUpdated which will notify you everytime the progressive scanner can decode an intermediate image. You also have a chance to choose an image update strategy to respond the delegate. #1957 @jyounus
Now the progressive option can work with KingfisherManager. Previously it only works when set in the view extension methods under kf. #1961 @onevcat

Fix

A potential crash in AnimatedImageView that releasing on another thread. #1956 @ufosky
A few internal clean up and removal of unused code. #1958 @idrougge

Remove

With the support of ImageProgressive.onImageUpdated, the semantic of ImageProgressive.default is conflicting with the behavior. ImageProgressive.default is now marked as deprecated. To initilize a default ImageProgressive, use ImageProgressive.init() instead.

7.2.4 - Removing DocC plugin (2022-06-15)

Fix

Dependency of DocC plugin is now removed and Swift Package Index can still generate and host the documentation. #1952 @marcusziade

7.2.3 - Track Transform (2022-06-09)

Fix

Now the URL based AVAssetImageDataProvider support tracking transform by default. This could solve some cases that the video thumbnail were not at correct orientation. #1951 @sgarg4008
Use DocC as documentation generator and switch to Swift Package Index as the host. Big thanks to @daveverwer and all other fellows for the fantastic work!

7.2.2 - Rainy Season (2022-05-08)

Fix

Loading an animated images from cache now respects the received options. #1935 @uclort

7.2.1 - Spring Earth (2022-04-11)

Fix

Align requestModifier parameter with AsyncImageDownloadRequestModifier to allow async request changing. #1918 @KKirsten
Fix an issue that data downloading task callbacks are held even when the task is removed. #1913 @onevcat
Give correct cache key for local urls in its conformance of Resource. #1914 @onevcat
Reset placeholder image when loading fails. #1925 @PJ-LT
Fix several typos and grammar. #1926 @johnmckerrell #1927 @SunsetWan

7.2.0 - End of the tunnel (2022-02-27)

Add

An option in memory cache that allows the cached images not be purged while the app is switchted to background. #1890

Fix

Now the animated images are reset when deinit. This might fix some ocasional crash when destroying the AnimatedImageView. #1886
Fix wrong key override when a local resource created by ImageResource's initializer. #1903

7.1.2 - Cold Days (2021-12-07)

Fix

Lacking of diskStoreWriteOptions from KFOptionSetter. Now it supports to be set in a chainable way. #1862 @ignotusverum
A duplicated nested Radius type which prevents the framework being used in Playground. #1872
An issue that sometimes KFImage does not load images correctly when a huge amount of images are being loaded due to animation setting. #1873 @tatsuz0u
Remove explicit usage of @Published to allow refering KFImage even under a deploy target below iOS 13. #1875
Now the image cache calculats the cost animated images correctly with all frames. #1881 @pal-aspringfield
Remove CarPlay support when building against macCatalyst, which is not properly conditionally supported. #1876

7.1.1 - Double Ninth (2021-10-16)

Fix

In some cases the KFImage loading causes a freeze on certain iOS 14 systems. #1849 Thanks reporting from @JetForMe @benjamincombes @aralatpulat
Setting image to an AnimatedImageView now correctly replaces its layer contents. #1836 @phantomato

7.1.0 - Autumn Patch (2021-10-12)

Add

Extension for CarPlay support. Now you can use Kingfisher's extension image setting methods on CPListItem. #1802 from @waynehartman

Fix

An Xcode issue that not recognizes iOS 15 availability checking for Apple Silicon. #1822 from @enoktate
Add onFailureImage modifier back to KFImage, which was unexpected removed while upgrading. #1829 from @skellock
Start binder loading when body is evaluated. This fixes an unwanted flickering. This also adds a protection for internal loading state. #1828 from @JetForMe and @IvanShah
Use color description based on CGFloat style of a color instead of a hex value to allow extended color space when setting it to a processor. #1826 from @vonox7
An issue that the local file provided images are cached for multiple times when an app is updated. This is due to a changing main bundle location on the disk. Now Kingfisher uses a stable version of disk URL as the default cache key. #1831 from @iaomw
Now KFImage's internal rendered view is wrapped by a ZStack. This prevents a lazy container from recognizing different KFImages with a same URL as the same view. #1840 from @iOSappssolutions

7.0.0 - Version 7 (2021-09-21)

Add

Rewrite SwiftUI support based on @StateObject instead of the old @ObservedObject. It provides a stable and better data model backs the image rendering in SwiftUI. For this, Kingfisher SwiftUI supports from iOS 14 now. #1707
Mark ImageCache.retrieveImageInMemoryCache(forKey:options:) as open to expose a correct override entry point to outside. #1703
The NSTextAttachment extension method now accepts closure instead of a evaluated view. This allows delaying the passing in view to the timing which actually it is needed. #1746
A KFAnimatedImage type to display a GIF image in SwiftUI. #1705
Add a progress parameter to the KFImage's placeholder closure. This allows you create a view based on the loading progress. #1707
Now KFAnimatedImage also supports configure modifier so you can set options to the underhood AnimatedImageView. #1768
Expose AnimatedImageView fields to allow consumers to observe GIF progress. #1789 @AttilaTheFun
An option to pass in an write option for writing data to the disk cache. This allows writing cache in a fine-tuned way, such as .atomic or .completeFileProtection. #1793 @ignotusverum

Fix

Uses UIGraphicsImageRenderer on iOS and tvOS for better image drawing. #1706
An issue that prevents Kingfisher compiling on mac Catalyst target in some certain of Xcode versions. #1692 @kvyatkovskys
The KF.retry(:_) method now accepts an optional value. It allows to reset the retry strategy by passing in a nil value. #1729
The placeholder view builder of KFImage now works when it gets changed instead of using its initial value forever. #1707
Some minor performance improvement. #1739 @fuyoufang
The LocalFileImageDataProvider now loads data in a background queue by default. This prevents loading performance issue when the loading is created on main thread. #1764 @ConfusedVorlon
Respect transition for SwiftUI view when using KFImage. #1767
A type of AuthenticationChallengeResponsable. Now use AuthenticationChallengeResponsible instead. #1780 @fakerlogic
An issue that AnimatedImageView dose not change the tintColor for templated images. #1786 @leonpesdk
A crash when loading a GIF image in iOS 13 and below. #1805 @leonpesdk

Remove

Drop support for iOS 10/11, macOS 10.13/10.14, tvOS 10/11 and watch OS 3/4. #1802
The workaround of KFImage.loadImmediately is not necessary anymore due to the model switching to @StateObject. The interface is kept for backward compatibility, but it does nothing in the new version. #1707

7.0.0-beta.4 - Version 7 (2021-09-16)

Add

An option to pass in an write option for writing data to the disk cache. This allows writing cache in a fine-tuned way, such as .atomic or .completeFileProtection. #1793

Fix

A crash when loading a GIF image in iOS 13 and below. #1805

7.0.0-beta.3 - Version 7 (2021-08-29)

Add

Now KFAnimatedImage also supports configure modifier so you can set options to the underhood AnimatedImageView. #1768
Expose AnimatedImageView fields to allow consumers to observe GIF progress. #1789

Fix

Respect transition for SwiftUI view when using KFImage. #1767
A type of AuthenticationChallengeResponsable. Now use AuthenticationChallengeResponsible instead. #1780
An issue that AnimatedImageView dose not change the tintColor for templated images. #1786

7.0.0-beta.2 - Version 7 (2021-08-02)

Fix

LocalFileImageDataProvider now loads data in a background queue by default. This prevents loading performance issue when the loading is created on main thread. [#1764]

7.0.0-beta.1 - Version 7 (2021-07-27)

Add

Rewrite SwiftUI support based on @StateObject instead of the old @ObservedObject. It provides a stable and better data model backs the image rendering in SwiftUI. For this, Kingfisher SwiftUI supports from iOS 14 now. #1707
Mark ImageCache.retrieveImageInMemoryCache(forKey:options:) as open to expose a correct override entry point to outside. #1703
The NSTextAttachment extension method now accepts closure instead of a evaluated view. This allows delaying the passing in view to the timing which actually it is needed. #1746
A KFAnimatedImage type to display a GIF image in SwiftUI. #1705
Add a progress parameter to the KFImage's placeholder closure. This allows you create a view based on the loading progress. #1707

Fix

Uses UIGraphicsImageRenderer on iOS and tvOS for better image drawing. #1706
An issue that prevents Kingfisher compiling on mac Catalyst target in some certain of Xcode versions. #1692
The KF.retry(:_) method now accepts an optional value. It allows to reset the retry strategy by passing in a nil value. #1729
The placeholder view builder of KFImage now works when it gets changed instead of using its initial value forever. #1707
Some minor performance improvement. #1739

Remove

Drop support for iOS 10, macOS 10.13, tvOS 10 and watch OS 3.
The workaround of KFImage.loadImmediately is not necessary anymore due to the model switching to @StateObject. The interface is kept for backward compatibility, but it does nothing in the new version. #1707

6.3.0 - Open To Better (2021-04-21)

Add

Mark SessionDelegate as public to allow a subclass to take over the delegate methods from session tasks. #1658
A new imageDownloader(_:didDownload:with:) in ImageDownloaderDelegate to pass not only Data but also the whole URLResponse to delegate method. Now you can determine how to handle these data based on the received response. #1676
An option autoExtAfterHashedFileName in DiskStorage.Config to allow appending the file extension extracted from the cache key. #1671

Fix

Now the GIF continues to play in a collection view cell with highlight support. #1685
Fix a crash when loading GIF files with lots of frames in AnimatedImageView. Thanks for contribution from @wow-such-amazing #1686

6.2.1 - Spring Release Fix (2021-03-09)

Fix

Revert changes for the external delegate in #1620, which caused some image resource loading failing due to a CFNetwork internal error.

6.2.0 - Spring Release (2021-03-08)

Add

The backend of Kingfisher's cache solution, DiskStorage and MemoryStorage, are now marked as public. So you can use them standalone in your project. #1649
An imageFrameCount property in image view extensions. It holds the frame count of an animated image if available. #1647
A new extraSessionDelegateHandler in ImageDownloader. Now you can receive the related session task delegate method by registering an external delegate object. #1620
A new method loadImmediately for KFImage to start the load manually. It is useful if you want to load the image before onAppear is called.

Fix

Drop the use of @State for keeping image across View update for KFImage. This should fix some SwiftUI internal crash when setting the image in KFImage. #1642
The image reference in ImageBinder now is marked with weak. This helps release memory quicker in some cases. #1640

6.1.1 - SwiftUI Issues (2021-02-17)

Fix

Remove unnecessary queue dispatch when setting image result. This prevents image flickering when some situation. #1615
Now the KF builder methods also accept optional URL or Source. It aligns the syntax with the normal view extension methods. #1617
Fix an issue that wrong hash is calculated for ImageBinder. It might cause view state lost for a KFImage. #1624
Now the ImageCache will disable the disk storage when there is no free space on disk when creating the cache folder, instead of just crashing it. #1628
A workaround for @State lost when using a view inside another container in a Lazy stack or grid. #1631
Performance improvement for images with an non-up orientation in Exif when displaying in KFImage. #1629

6.1.0 - SwiftUI Rework (2021-02-01)

Add

Rewrite state management for KFImage. Now the image reloading works in a more stable way without task dispatching. #1604
Add fade and forceTransition modifier to KFImage to support built-in fade in effect when loading image in SwiftUI. #1604

Fix

When an ImageModifier is applied, the modified image is not cached to memory cache anymore. The ImageModifier is intended to be used just before setting the image to a view and now it works as expected. #1612
Now SwiftUI and Combine are declared as weak link in podspec. This is a workaround for some rare case build issue. It does not affect supported deploy version of Kingfisher. #1607
Remove header file from podspec to allow Kingfisher built as a static framework in a Swift-ObjC mixed project. #1608

6.0.1 - Bind & Hug (2021-01-05)

Fix

Start the binder again when KFImage initialized, to keep the same behavior as previous versions. #1594

6.0.0 - New Year 2021 (2021-01-03)

Add

A KF shorthand to create image setting tasks and config them. It provides a cleaner and modern way to use Kingfisher. Now, instead of using imageView.kf.setImage(with:options:), you can perform chain-able invocation with KF helpers. For example, the code below is identical. #1546

// Old way
imageView.kf.setImage(
  with: url,
  placeholder: localImage,
  options: [.transition(.fade(1)), .loadDiskFileSynchronously],
  progressBlock: { receivedSize, totalSize in
      print("progressBlock")
  },
  completionHandler: { result in
      print(result)
  }
)

// New way
KF.url(url)
  .placeholder(localImage)
  .fade(duration: 1)
  .loadDiskFileSynchronously()
  .onProgress { _ in print("progressBlock") }
  .onSuccess { result in print(result) }
  .onFailure { err in print("Error: \(err)") }
  .set(to: imageView)

Similar to KF, The KFImage for SwiftUI is now having the similar chain-able syntax to setup an image task and options. This makes the KFImage APIs closer to the way how SwiftUI code is written. #1586
Add support for TVMonogramView on tvOS. #1571
Some important properties and method in AnimatedImageView.Animator are marked as public now. It provides some useful information of the decoded GIF files. #1575
An AsyncImageDownloadRequestModifier to support modifying the request in an asynchronous way. #1589
Add a .lowDataMode option to support for Low Data Mode. When the .lowDataMode option is provided with an alternative source (usually a low-resolution version of the original image), Kingfisher will respect user's Low Data Mode setting and download the alternative image instead. #1590

Fix

An issue that importing AppKit wrongly in a macCatalyst build. #1547

Remove

Deprecated types, methods and properties are removed. If you are still using Kingfisher.Image, Kingfisher.ImageView or Kingfisher.Button, use the equivalent KFCrossPlatform types (such as KFCrossPlatformImage, etc) instead. Please make sure you do not have any warnings before migrate to Kingfisher v6. For more about the removed deprecated things, check #1525.
The standalone framework target of SwiftUI support is removed. Now the SwiftUI support is a part in the main Kingfisher library. To upgrade to v6, first remove Kingfisher/SwiftUI subpod (if you are using CocoaPods) or remove the KingfisherSwiftUI target (if you are using Carthage or Swift Package Manager), then reinstall Kingfisher. #1574

5.15.8 - KFImage handler (2020-11-27)

Fix

An issue caused the onSuccess handler not be called when the image is already cached. #1570

5.15.7 - Cancel Lock (2020-10-29)

Fix

A potential crash when cancelling image downloading task while accessing its original request on iOS 13 or earlier. #1558

5.15.6 - ImageBinder Callback (2020-10-11)

Fix

Prevent main queue dispatching in ImageBinder if it is already on main thread. This prevents unintended flickering when reloading. #1551

5.15.5 - Cancelling Fix (2020-09-29)

Fix

A possible fix for the crashes when cancelling a huge amount of image tasks too fast. [#1537]

5.15.4 - Farewell Objective-C (CocoaPods) (2020-09-24)

Fix

Give SessionDelegate an Objective-C name so it can work with other libraries even added by a dependency which generates Objective-C header. #1532

5.15.3 - Farewell Objective-C (2020-09-21)

Fix

Removed the unnecessary ObjC header generating and module defining due to Xcode 12 is now generating conflicted types even for different libraries. #1517
Set deploy target for SwiftUI target and its pod spec to iOS 10 and macOS 10.12, which aligns to the settings of core framework. That resolves some dependency issues when using CocoaPods for both app target and extension targets. But it does not mean you can use the SwiftUI support on those minimal target. All related APIs are still unavailable on old system versions. #1524

5.15.2 - Xcode 11 Revived (2020-09-19)

Fix

Fix a build error introduced by the previous SwiftUI fix for Xcode 12. Now Xcode 11 can also build the KingfisherSwiftUI target. #1515

5.15.1 - SwiftUI Layout (2020-09-16)

Fix

A workaround for a SwiftUI issue that embedding an image view inside the List > NavigationLink > HStack hierarchy could crash the app on iOS 14. #1508

5.15.0 - Video and Text Attachment (2020-08-17)

Add

An AVAssetImageDataProvider to generate an image from a remote video asset at a specified time. All the processing gets benefits from current existing Kingfisher technologies, such as cache and image processors. #1500
New extension methods on NSTextAttachment to load an image from network for an attachment. #1495
A general clear cache method which combines clearing for memory cache and disk cache. #1494

Fix

Now the sample app has a new look and supports dark mode, finally. #1496

5.14.1 - Summer Fix (2020-07-06)

Fix

Early return if no valid animator in an AnimatedImageView. This prevents a CGImage rendering issue displaying a static image. #1428
Enable Define Module setting to generate module map. So Kingfisher could be used in libraries imported to Objective-C projects. #1451
A fix to workaround on implicitly initializer of queue that might cause a crash. #1449
Improve the disk cache performance by avoiding unnecessary disk operations. #1480

5.14.0 - Retry Strategy (2020-05-13)

Add

A .retryStrategy option and associated RetryStrategy to define a highly customizable retry mechanism in Kingfisher. [#1424]
Built-in DelayRetryStrategy to provide a most common used retry strategy implementation. It simplifies the normal retry requirement when downloading an image from network. #1447
Now you can set the round corner radius for a RoundCornerImageProcessor in a fraction way. This is useful when you do not know the desire image view size, but still want to clip any received image to a certain round corner ratio (such as a circle for any image). #1443
Add an isLoaded binding to KFImage to follow SwiftUI pattern better. #1429

Fix

An issue that .imageModifier option not working on an ImageProvider provided image. #1435
A workaround for making xcframework continue to work when exported with Swift 5.2 compiler and Xcode 11.4. #1444

5.13.4 - Build Configurations (2020-04-11)

Fix

Expose all build configurations in Package.swift file for Swift Package Manager. Now you can choose the linking style by yourself. #1426

5.13.3 - Dynamic SPM (2020-04-01)

Fix

Allows Carthage to build this library for macOS. #1413
Explicitly specify to build as a dynamic framework for Swift Package Manager. #1420

5.13.2 - KFImage Orientation (2020-02-28)

Fix

An issue for KFImage when resizing images with different EXIF orientation other than top. #1396
A race condition when setting CacheCallbackCoordinator state. #1394
Move an @objc attribute to prevent warnings in Xcode 11.4.

5.13.1 - Internal Warning (2020-02-17)

Fix

Fix an unused variable warning which is on by default in Xcode 11.4 and Swift 5.2, which makes CocoaPods angry when compiling. #1393

5.13.0 - New Year 2020 (2020-01-17)

Add

Mark DefaultCacheSerializer as public and enables the ability of original data caching. #1373
Add image compression quality parameter to DefaultCacheSerializer. #1372
A new contentURL property in ImageDataProvider to provide a URL when it makes sense. #1386

Fix

Now, local file URLs can be loaded as Resources without converted to LocalFileImageDataProvider explicitly. #1386

5.12.0 - White Overflow (2019-12-13)

Add

Two error cases under KingfisherError.CacheErrorReason to give out the detail error information and reason when a failure happens when caching the file on disk. Check .cannotCreateCacheFile and .cannotSetCacheFileAttribute if you need to handle these errors. #1365

Fix

A 32-bit Int overflow when calculating expiration duration when a large days value is set for StorageExpiration. #1371
The build config for SwiftUI sub-pod now only applies to the KingfisherSwiftUI scheme. #1368

5.11.0 - macCatalyst (2019-11-30)

Add

Support macCatalyst platform when building with Carthage. #1356

Fix

Fix an issue that image orientation not correctly applied when an image processor used. #1358

5.10.1 - Repeat Count (2019-11-20)

Fix

Fix a wrong calculation of repeatCount of AnimatedImageView. Now it can play correct count for an animated image. #1350
Make sure to skip disk cache when fromMemoryCacheOrRefresh set. #1351
Fix a issue which prevents building with Xcode 10. #1353

5.10.0 - Rex Rabbit (2019-11-17)

Add

An .alternativeSources option to provide a list of alternative image loading Sources. These Sources act as a fallback when the original Source downloading fails where Kingfisher will try to load images from. #1343

Fix

The .waitForCache option now also waits for caching for original image if the .cacheOriginalImage is also set. #1344
Now the retrieveImage methods in ImageCache calls its callbackQueue is .mainCurrentOrAsync by default instead of .untouch. It aligns the behavior of other parts in the framework. #1338
An issue that causes customize indicator not being placed with correct size. #1345
Performance improvement for loading progressive images. #1332

5.9.0 - Combination (2019-10-24)

Add

Introduce a |> operator for combining image processors. #1320

Fix

Improve performance of reading task identifier when handling downloading side effect. #1310
Improve some type conversion to boost building. #1321

5.8.3 - Carthage Cache (2019-10-09)

Fix

Generate Objective-C header to make carthage cache work again. #1308

5.8.2 - Game of Thrones (2019-10-04)

Fix

Fix broken semantic versioning introduced by 5.8.0. #1304
Remove implicit animations in SwiftUI when a .fade animation applied in the option. Now Kingfisher respect all animations set by users instead of overwriting it internally. #1301
Now project uses KingfisherSwiftUI with Swift Package Manager can be archived correctly. #1300

5.8.1 - Borderless (2019-09-27)

Fix

Remove the unexpected border in KFImage while loading the image. #1293

5.8.0 - Xcode 11 & SwiftUI (2019-09-25)

Add

Add support for Swift Package Manager. Now you can build and use Kingfisher with SPM under Xcode 11 and use it in all targets.
Add support for iPad Apps for Mac. You can use Kingfisher's UIKit extensions (like UIImage and UIImageView) on a catalyst project.
Add support for SwiftUI. Build and import KingfisherSwiftUI.framework or contain the "Kingfisher/SwiftUI" subpod, then you can use KFImage to load image asynchronously. KFImage provides a similar interface as View.Image.
Add support for building as a binary framework. A zipped file containing xcframework and related dSYMs is provided in the release page.
A diskCacheAccessExtendingExpiration option to give more control of disk cache extending behavior. #1287
Combine all targets into one. Now Kingfisher is a cross-platform target and you need to specify an SDK to build it.

Fix

Rename too generic typealias names in Kingfisher, to avoid conflicting with SwiftUI types. Original Kingfisher.Image is now Kingfisher.KFCrossPlatformImage. The similar rules are applied to other cross-platform typealias too, such as Kingfisher.View, Kingfisher.Color and more.
A potential thread issue in taskIdentifier which might cause a crash when using data provider. #1276
An issue that causes memory shortage when a large number of network images are loaded in a short time. #1270

5.7.1 - Thread Things (2019-08-11)

Fix

Setting runLoopMode for AnimatedImageView will trigger animation restart normally. #1253
A possible thread issue when removing storage object from memory cache by the cache policy. #1255
Manipulating on AnimateImageView's frame array is now thread safe. #1257

5.7.0 - Summer Bird (2019-07-03)

Add

Mark cacheFileURL(forKey:) of DiskStorage to public. #1214
Mark KingfisherManager initializer to public so other dependencies can customize the manager behavior. #1216

Fix

Performance improvement on progressive JPEG scanning. #1218
Fix a potential thread issue when checking progressive JPEG. #1220

Remove

The deprecated Result extensions for Swift 4 back compatibility are removed. #1224

5.6.0 - The Sands of Time (2019-06-11)

Add

Support extending memory cache TTL to a specified time instead of the fixed original expire setting. Use the .memoryCacheAccessExtendingExpiration to set a customize expiration extending duration when accessing the image. #1196
Add prebuilt binary framework when releasing to GitHub. Further supporting of fully compatible binary framework would come after Swift module stability. #1194

Fix

Resizing performance for animated images should be improved dramatically. #1189
A small optimization on MD5 calculation for image file cache key. #1183

5.5.0 - Progressive JPEG (2019-05-17)

Add

Add support for loading progressive JPEG images. This feature is still in beta and will be improved in the next few releases. To try it out, make sure you are loading a progressive JPEG image with a .progressiveJPEG options passed in. Thanks @lixiang1994 #1181
Choose to use Swift.Result as the default result type when Swift 5.0 or above is applied. #1146

Fix

Apply to some modern Swift syntax, which may also improve internal performance a bit. #1181

5.4.0 - Accio Support (2019-04-24)

Add

Add support for building project with Accio (and Swift Package Manager). #1153

Fix

Now maxCachePeriodInSecond of cache would treat 0 as expiring correctly. #1160
Normalization of image now returns an image with .up as orientation. #1163

5.3.1 - Prefetching Thread (2019-03-28)

Fix

Some thread issues which may cause crash when loading images by ImagePrefetcher. #1150
Setting a negative value by the deprecated maxCachePeriodInSecond API now expires the cache correctly. #1145

5.3.0 - Prefetching Sources (2019-03-24)

Add

Now ImagePretcher also supports using Source as fetching target. #1142
An option to skip file name hashing when storing image to disk cashe. #1140
Supports multiple Swift versions for CocoaPods 1.7.0.

Fix

An issue that loading a downsampled image from original version might lead to different scale and potential memory performance problem. #1126
Marking setter of kf wrapper as nonmutating and seperate value/reference version of KingfisherCompatible. This allows mutating properties on kf even with a let declaration. #1134
A regression which causes stack overflow when using ImagePretcher to load huge ammount of images. #1143

5.2.0 - Swift 5.0 (2019-02-27)

Add

Compatible with Swift 5.0 and Xcode 10.2. Now Kingfisher builds against Swift 4.0, 4.2 and 5.0. #1098

Fix

A possible dead lock when using ImagePretcher heavily in another thread. #1122
Redesign Result type based on Swift Result in standard library. Deprecate value and error getter for Kingfisher.Result.

5.1.1 - Racing (2019-02-11)

Fix

Deprecate incorrect ImageCache initializer with path parameter. Now use the cacheDirectoryURL version for clearer implemetation. #1114
Fix a race condition when setting download delegate from multiple ImagePrefetchers. #1109
Now directoryURL of disk storage backend is marked as public correctly. #1108

5.1.0 - Redirecting & Racing (2019-01-12)

Add

Add a ImageDownloadRedirectHandler for intercepting HTTP request which redirects. #1072

Fix

Some thread racing when downloading and resetting images in the same image view. #1089

5.0.1 - Interweave (2018-12-17)

Fix

Retrieving images from cache now respect options callbackQueue setting. #1066
A crash when passing zero or negative size to DownsamplingImageProcessor. #1073

5.0.0 - Reborn (2018-12-08)

Add

Add Result type to Kingfisher. Now all callbacks in Kingfisher are using Result instead of tuples. This is more future-friendly and provides a modern way to make error handling better.
Make KingfisherError much more elaborate and accurate. Instead of simply provides the error code, now KingfisherError contains error reason and necessary associated values. It will help to understand and track the errors easier.
Better cache management by separating memory cache and disk cache to their own storages. Now you can use MemoryStorage and DiskStorage as the ImageCache backend.
Image cache of memory storage would be purged automatically in a certain time interval. This reduce memory pressure for other parts of your app.
The ImageCache is rewritten from scratch, to get benefit from new created MemoryStorage and DiskStorage. At the same time, this hybrid cache abstract keeps most API compatibility from the earlier versions.
Now the ImageCache can receive only raw Data object and cache it as needed.
A KingfisherParsedOptionsInfo type to parse KingfisherOptionsInfoItems in related API. This improves reusability and performance when handling options in Kingfisher.
An option to specify whether an image should also prefetched to memory cache or not.
An option to make the disk file loading synchronously instead of in its own I/O queue.
Options to specify cache expiration for either memory cache or disk cache. This gives you a chance to control cache lifetime in a per-task grain size.
Add a default maximum size for memory cache. Now only at most 25% of your device memory will be used to kept images in memory. You can also change this value if needed.
An option to specify a processing queue for image processors. This gives your flexibility if you want to use main queue or if you want to dispatch the processing to a different queue.
A DownsamplingImageProcessor for downsampling an image to a given size before loading it to memory.
Add ImageDataProvider protocol to make it possible to provide image data locally instead of downloading from network. Several concrete types are provided to load images from data format. Use LocalFileImageDataProvider to load an image from a local disk path, Base64ImageDataProvider to load image from a Base64 string representation and RawImageDataProvider to provide a raw Data object.
A general Source protocol to define from where the image should be loaded. Currently, we support to load an image from ImageDataProvider or from network now.

Fix

Now CommonCrypto from system is used to calculate file name from cache key, instead of using a customized hash algorithm.
An issue which causes ImageDownloader crashing when a lot of downloading tasks running at the same time.
All operations like image pretching and data receiving should now be performed in non-UI threads correctly.
Now KingfisherCompatible uses struct for kf namespacing for better performance.

4.10.1 - Time Machine (2018-11-03)

Fix

Add Swift 4 compatibility back.
Increase watchOS target to 3.0 in podspec.

4.10.0 - Swift 4.2 (2018-09-20)

Add

Support for building with Xcode 10 and Swift 4.2. This version requires Xcode 10 or later with Swift 4.2 compiler.

Fix

Improve performance when an invalide HTTP status code received. #985

4.9.0 - Patience is a Virtue (2018-09-04)

Add

Add a waitForCache option to allowing cache callback called after cache operation finishes. #963

Fix

Animated image now will recognize .once and .finite(1) the same thing. #982
Replace class-only protocol keyword with AnyObject as Swift convention. #983
A wrong cache callback parameter when storing cache with background decoding. #986
Access downloadHolder in a serial queue to avoid racing. #984

4.8.1 - Prefetch Improvement (2018-07-26)

Fix

Fix a performance issue when prefetching images by moving related operation away from main queue. #957
Improvement on stability of some test cases.

4.8.0 - Watch & Watching (2018-05-15)

Add

WKInterfaceImage setting image interface for watchOS. #913
A new delegate method for watching ImageDownloader object completes a downloading request with success or failure. #901

Fix

Use newly created operation queue for downloader.
Filter.init(tranform:) is renamed to Filter.init(transform:)
Some internal minor fix on constant and typo, etc.

4.7.0 - Cancel All (2018-04-06)

Add

ImageDownloader now contains a method cancelAll to cancel all downloading tasks. #894
Supports Swift 4.1 and Xcode 9.3. #889

4.6.4 - Customize Activity Indicator (2018-03-20)

Fix

An issue caused customize activity indicator not working for Swift 4. #872
Specify Swift compiler version explicity in pod spec file for CocoaPods 1.4. #875

4.6.3 - Clean Demo (2018-03-01)

Fix

Move demo project out from Kingfisher framework project. #867
An issue that caused stack overflow when prefetching too many images, while they are already cached. #866

4.6.2 - GIF frames (2018-02-14)

Fix

Animated image view now will call finished delegate method in correct timing. #860

4.6.1 - MD5 (2017-12-28)

Fix

Revert to use non-dependency way to handle MD5, to solve issues which redefination of dependency library. #834

4.6.0 - AniBird (2017-12-27)

Add

Delegate methods for AnimatedImageView to inspect finishing event and/or end of an animation loop. #829

Fix

Minor performance improvement by final some classes.
Remove unnecessary Box type since Objective-C world takes Any. #832.
Some internal failing tests on earlier macOS, in which color space giving different result.

4.5.0 - Blending (2017-12-05)

Add

New image processors to blend an image. See BlendImageProcessor on iOS/tvOS and CompositingImageProcessor on macOS. #818

Fix

A crash when prefetching too many images in a single batch. #692
A possible invalid redeclaration on Array from AnimatedImageView. #819

4.4.0 - Image Modifier (2017-12-01)

Add

Add ImageModifier to give a final chance for setting image object related properties just before getting back the image from either network or cache. #810

Fix

Apply scale on all image based processor methods, including the existing ones from memory cache. #813

4.3.1 - Cache Regression (2017-11-21)

Fix

A regression introduced in 4.3.0 which cause the cache not working well for processed images.

4.3.0 - Memory Or Refresh (2017-11-17)

Add

An option for only getting cached images from memory or refresh it by downloading. It could be useful for fetching images behind the same URL while keeping to use the latest memory cached ones. #806

Fix

A problem when setting customized indicator with non-zero frame. Now the indicator will be no longer resized to image view size incorrectly. #798
Improve store performance by avoiding re-encode images as long as the original data could be provided. #805

4.2.0 - A Tale of Two Caches (2017-10-22)

Add

An option to provice a specific cache for original image. This gives us a change to caching original iamges on a different cache. #794

4.1.1 - Love Barrier Again (2017-10-17)

Fix

A potential race condition in ImageDownloader. #763

4.1.0 - Data in Hand (2017-09-28)

Add

An ImageDownloader delegate method to provide a chance for you to check and modify the data. #773

Fix

Now Kingfisher also supports Swift 3.2, as a workaround for CocoaPods not respecting pod spec build setting. CocoaPods_#6791

4.0.1 - Swift 4 (2017-09-15)

Add

Supports for Swift 4. The new major version of Kingfisher should be source compatible with Kingfisher 3. Please make sure you have no warning left with Kingfisher related APIs before migrating to version 4, since all deprecated methods are removed from our code base. #704
A cleaner API to track whether an image is cached and its cache type. Use imageChachedType and CacheType.cached instead of isImageCached and CacheCheckResult. #704

Fix

Update pod spec to use Swift 4.0 as Swift Version configuration.

4.0.0 - Swift 4 (2017-09-14)

Add

Supports for Swift 4. The new major version of Kingfisher should be source compatible with Kingfisher 3. Please make sure you have no warning left with Kingfisher related APIs before migrating to version 4, since all deprecated methods are removed from our code base. #704
A cleaner API to track whether an image is cached and its cache type. Use imageChachedType and CacheType.cached instead of isImageCached and CacheCheckResult. #704

3.13.1 - Evil Setting (2017-09-14)

Fix

Disable code coverage for all targets in build setting to avoid rejecting from iTunes when building with Xcode 9. #753

3.13.0 - Rum Bird (2017-09-12)

Add

Introduces a backgroundColor property to RoundCornerImageProcessor allowing to specify a desired backgroud color. It could be useful for a JPEG based image to prevent alpha blending. #766

3.12.2 - Scaling Background Decoding (2017-09-02)

Fix

Fix an issue which causes image scale not correct when background decoding option is used. #761

3.12.1 - Placeholder (2017-08-30)

Add

Now you could use a customized view (subclass of UIView or NSView) as placeholder in image view setting extension method. #746

3.12.0 - Placeholder (2017-08-30)

Add

Now you could use a customized view (subclass of UIView or NSView) as placeholder in image view setting extension method. #746

3.11.0 - Task Auth (2017-08-16)

Add

A task based authentication challenge handler for some auth methods like HTTP Digest. #742

Fix

The option of keepCurrentImageWhileLoading now will respect your placeholder if the original image is nil in the image view. #747

3.10.4 - Indicator Size (2017-07-26)

Fix

Respect image and custom indicator size. Now Kingfisher will not resize the indicators to the image size for you automatically.

3.10.3 - ProMotion (2017-07-06)

Fix

Fix a problem which causes the GIF playing in a slow rate on ProMotion enabled devices (iPad Pro 10.5) #718

3.10.2 - Missing Boys (2017-06-16)

Fix

Now the processed images result from a cache original image could be cached correctly. #711
Some internal minor clean up.

3.10.1 - Order, order! (2017-06-04)

Fix

Change an inline function order to make Swift 3.0 compiler happy. #700

3.10.0 - Hot Bird (2017-06-03)

Add

New cache retriving strategy for a request with certain ImageProcessor applied. Now Kingfisher will first try to get the processed images from cache. If not existing, it will be smart enough to check whether the original image exists in cache to avoid downloading it.
A cacheOriginalImage option to also cache original images while an ImageProcessor is applied. It is required if you want the new cache strategy. #650
A FormatIndicatedCacheSerializer to serialize the image into a certain format (png, jpg or gif). #693

Fix

A timing issue when you try to cancel an on-going download task, and start the same one again immediately. Now the previous one will received an error and the later one could be completed normally. #532
Fix the showing/hiding logic for activity indicator in image view to make them independent from race condition.
A possible race condition that accessing downloading fetch load conccurently.
Invalidate the download session when the downloader gets released. It might cause problem if you were using your own downloader instance.
Some internal stability improvement.

3.9.1 - Compatibility (2017-05-13)

Fix

Fix a problem which prevents building under Xcode 8.2 / Swift 3.0. #677

3.9.0 - Follow the Rules (2017-05-11)

Add

A default option in KingfisherManager to let users set a global default option to all KingfisherManager related methods, as well as all UI extension methods. #674

Fix

Now the options appended will overwrite the previous one. This makes users be able to set proper options in a per-image-way, even when there is already a default option set in KingfisherManager.
Deprecate requestsUsePipeling in ImageDownloader since there was a typo. Now use requestsUsePipelining instead. #673
Some internal improvement for private APIs.

3.8.0 - Prowess (2017-05-10)

Add

An API to apply rect round for specified corner in RoundCornerImageProcessor. Instead of making all four corners rounded, you can now set only some corners rounding. #668

3.7.2 - Never Do Things by Halves (2017-05-09)

Fix

A wrong design which causes completion handler for previous downloading not called when setting to another url. #665

3.7.1 - GIF is Animated (2017-05-08)

Fix

Deprecated preloadAllGIFData. Change to a more generic name preloadAllAnimationData since it could be used for other format with ImageProcessor. #664

3.7.0 - Summer Bird (2017-05-04)

Add

A delegate method in ImageDownloaderDelegate to notify starting of a downloading progress.

Fix

Better documentation for Resource parameter in image setting extension.

3.6.2 - Naughty CGImage (2017-04-11)

Fix

A problem in CroppingImageProcessor and crop method of images which crops wrong area for images with a non-1 scale. #649
Refactor for ResizingImageProcessor. targetSize of ResizingImageProcessor is now deprecated. Use referenceSize instead. It's just a name changing for clearer API. #646

3.6.1 - Some Optimization (2017-04-01)

Fix

Fix warnings when build Kingfisher in Swift 3.1 compiler. #632
Wrong size when decoding images with a passed-in scale option. #633
Speed up MD5 calculation by turing to a pure Swift implementation. #636
Host docs directly in GitHub. #641

3.6.0 - Cropping (2017-03-26)

Add

A built-in image processor to crop images with a targeted size and anchor. #465

3.5.2 - Bad Apple (2017-03-09)

Fix

An issue which causes app crashing while folder enumerating encountered an error in ImageCache. #620

3.5.1 - Fast is better than slow (2017-03-01)

Fix

A minor improvement on slow compiling time due to a method in Image. #611

3.5.0 - New age, new content (2017-02-21)

Add

Resizing processor now support to resize images with content mode. You could choose from aspectFill, aspectFit or just respect the target size. #597

Fix

A problem which might cause the downloaded image set unexpected for a cell which already not in use. #598

3.4.0 - Spring is here (2017-02-11)

Add

Use the onlyLoadFirstFrame option to load only the first frame from a GIF file. It will be useful when you want to display a static preview of the first frame from a GIF image. By doing so, you could save huge ammount of memory. #591

Fix

Now cancel on a RetrieveImageTask will work properly even when the downloading not started for UIButton and NSButton too. #580
Progress block of extensions setting methods will not be called multiple times if you set another task while the previous one still in downloading. #583
Image cache will work properly when ImagePrefetcher trying to prefetch images with an ImageProcessor. Now the fetched and processed images could be retrieved correctly. #590

3.3.4 - Cancellation means a new start! (2017-02-04)

Fix

Now cancel on a RetrieveImageTask will work properly even when the downloading not started. #578
Use modern float constant of pi. #576

3.3.3 - Xcode 8.0 is not dead yet (2017-01-30)

Fix

A type inference to make Kingfisher compiles on Xcode 8.0 again. #572

3.3.2 - Upside Down (2017-01-23)

Fix

An issue which causes the background decoded images drawn upside down.

3.3.1 - Lunar Eve (2017-01-21)

Add

Expose default pngRepresentation, jpegRepresentation and gifRepresentation as public. #560
Support unlimited disk cache duration. #566

Fix

A mismatch of CG image component when creating CGContext for blur filter. #567
Remove test images from repo to keep slim. #568

3.3.0 - Lunar Eve (2017-01-21)

Add

Expose default pngRepresentation, jpegRepresentation and gifRepresentation as public. #560
Support unlimited disk cache duration. #566

Fix

A mismatch of CG image component when creating CGContext for blur filter. #567
Remove test images from repo to keep slim. #568

3.2.4 - Love SPM again (2016-12-22)

Fix

A problem that causes framework cannot be compiled by Swift Package Manager. #547
Removed an unused parameter from round corner image API. #548

3.2.3 - LI ZHENG (2016-12-20)

Fix

An issue which caused processed images igoring exif orientation information. #535

3.2.2 - Faster GIF (2016-12-02)

Fix

Improve preload animated image loading strategy by using background queue. This should improve framerate when loading a lot of GIF files in the same time. #529
Make ImageDownloader a pure Swift class to avoid the SDK bug which might leak memory in iOS 10. #520
Fix some typos. #523

3.2.1 - Helper Helps (2016-11-14)

Add

A new set of KingfisherOptionsInfo extension helpers to extract options easiser. It will be useful when you are trying to implement your own processors or serializers. #505
Mark the empty task for downloader as public. #508

Fix

Set placeholder image even when the input resource is nil. This is a regression from version 3.2.0. #510

3.2.0 - Quiet (2016-11-07)

Add

A new option to ignore placeholder and keep current image while loading/downloading a new one. This would be useful when you want to display the earlier image while loading a new one. 494
A disk cache path closure to let you fully customize the disk cache path. #499

Fix

Move methods which were marked as open to their class defination scope, to avoid the compiler restriction when overridden. #500

3.1.4 - CIImageProcessor with Data (2016-10-19)

Fix

Fix a problem that CIImageProcessor not get called when feeding data to the processor. #485

3.1.3 - Collocalia (2016-10-06)

Fix

A compiling time issue. Now the compile time of Kingfisher should drop dramatically. #467
kf wrapper of all Kingfisher compatible types now a class instead of struct, to make mutating opearation on it possible. #469

Remove

requestModifier of ImageDownloader is removed to prevent leading to misunderstanding.

3.1.1 - Kingfisher likes more (2016-09-28)

Fix

An issue which prevents using multiple image processors at the same time. Now you can use different ImageProcessor at the same time for an image, while keeping high performance since only one downloading process would be fired. #460
A crash when processing some images with built-in ResizingImageProcessor and OverlayImageProcessor while the input images not having a standard format. #440, #461
ImageCache could accept a path extension as key now. #456

3.1.0 - Namespace (2016-09-21)

Add

Add kf namespace for all extension APIs in Kingfisher. Now no need to worry about name conflicting any more. #435

Fix

Mark AnimateImageView to open so you can extend this class again. #442
Update demo code to adopt iOS 10 prefetching cell feature and new cell life cycle. #447

Remove

Since kf namespace is added, all original kf_ prefix methods are marked as deprecated.

3.0.1 - New Age - Swift 3 (2016-09-14)

Add

Swift 3 compatibility. This version follows Swift 3 API design guideline as well as contains a lot of breaking changes from version 2.x. See Kingfisher 3.0 Migration Guide for more about how to migrate your project to 3.0. Kingfisher 2.6.x is still supporting both Swift 2.2 and 2.3.
Image Processor. Now you can specify an image processor and it will be used to process images after downloaded. It is useful when you need to apply some transforming or filter to the image. You can also use the processor to support any other image format, like WebP. See Processor section in the wiki for more. The default processor should behave the same as before. #420
Built-in processors from simple round corner and resizing to filters like tint and blur. Check Built-in processors of Kingfisher for more.
Cache Serializer. CacheSerializer will be used to convert some data to an image object for retrieving from disk cache and vice versa for storing to disk cache.
New indicator type. Now you should be able to use your own indicators. #430
ImageDownloadRequestModifier. Use this protocol to modify requests being sent to your server.

Fix

Resource is now a protocol instead of a struct. Use ImageResource for your original Resource type. And now URL conforms Resource so the APIs could be clearer.
Now Kingfisher cache will store re-encoded image data instead of the original data by default. This is needed due to we want to store the processed data from ImageProcessor. If this is not what you want, you should supply your customized instanse of CacheSerializer.

Remove

KingfisherManager.init is removed since you should never create your own manager.
cachedImageExistsforURL in ImageCache is removed since it introduced unnecessary coupling. Use isImageCached instead.
requestModifieris removed. Use.requestModifierand pass aImageDownloadRequestModifier`.
kf_showIndicatorWhenLoading is removed since we have a better and flexible way to use indicator by kf_indicatorType.

3.0.0 - New Age - Swift 3 (2016-09-14)

Add

Swift 3 compatibility. This version follows Swift 3 API design guideline as well as contains a lot of breaking changes from version 2.x. See Kingfisher 3.0 Migration Guide for more about how to migrate your project to 3.0. Kingfisher 2.6.x is still supporting both Swift 2.2 and 2.3.
Image Processor. Now you can specify an image processor and it will be used to process images after downloaded. It is useful when you need to apply some transforming or filter to the image. You can also use the processor to support any other image format, like WebP. See Processor section in the wiki for more. The default processor should behave the same as before. #420
Built-in processors from simple round corner and resizing to filters like tint and blur. Check Built-in processors of Kingfisher for more.
Cache Serializer. CacheSerializer will be used to convert some data to an image object for retrieving from disk cache and vice versa for storing to disk cache.
New indicator type. Now you should be able to use your own indicators. #430
ImageDownloadRequestModifier. Use this protocol to modify requests being sent to your server.

Fix

Resource is now a protocol instead of a struct. Use ImageResource for your original Resource type. And now URL conforms Resource so the APIs could be clearer.
Now Kingfisher cache will store re-encoded image data instead of the original data by default. This is needed due to we want to store the processed data from ImageProcessor. If this is not what you want, you should supply your customized instanse of CacheSerializer.

2.6.0 - Indicator Customization (2016-09-12)

Add

Support for different types of indicators, including gif images. #425

2.5.1 - Prefetcher Trap (2016-09-06)

Fix

Fix a possible trap of range making in prefetcher. #422

2.5.0 - Swift 2.3 (2016-08-29)

Add

Support for Swift 2.3

2.4.3 - Longer Cache (2016-08-17)

Fix

The disk cache now will use access date for expiring checking, which should work better than modification date. #381 #405

2.4.2 - Optional Welcome (2016-07-10)

Add

Accept nil as valid URL parameter for image view's extension methods.

Fix

The completion handler of image view setting method will not be called any more if self is released.
Improve empty task so some performance improvment could be achieved.
Remove SwiftLint since it keeps adding new rules but without a back compatible support. It makes the users confusing when using a different version of SwiftLint.
Removed Implicit Unwrapping of CacheType that caused crashes if the image is not cached.

2.4.1 - Force Transition (2016-05-10)

Add

An option (ForceTransition) to force image setting for an image view with transition. By default the transition will only happen when downloaded. #317

2.4.0 - Animate Me (2016-05-04)

Add

A standalone AnimatedImageView to reduce memory usage when parsing and displaying GIF images. See README for more about using Kingfisher for GIF images. #300

Fix

An issue which may cause iOS app crasing when switching background/foreground multiple times. #309
Change license of String+MD5.swift to a more precise one. #302

2.3.1 - Pod Me up (2016-04-22)

Fix

Exclude NSButton extension from no related target. #292

2.3.0 - Warmly Welcome (2016-04-21)

Add

Add support for App Extension target. #290
Add support for NSButton. #287

2.2.2 - Spring Bird II (2016-04-06)

Fix

Add default values to optional parameters, which should be a part of 2.2.1. #284

2.2.1 - Spring Bird (2016-04-06)

Fix

A memory leak caused by closure based Generator. #281
Remove duplicated APIs since auto completion gets improved in Swift 2.2. #283
Enable all recongnized format for UIImage. #278

2.2.0 - Open Source Swift (2016-03-24)

Add

Compatible with latest Swift 2.2 and Xcode 7.3. #270. If you need to use Kingfisher in Swift 2.1, please consider to pin to version 2.1.0.

Fix

A trivial issue that a context holder should not exist when decoding images background.

2.1.0 - Prefetching (2016-03-10)

Add

Add ImagePrefetcher and related prefetching methods to allow downloading and caching images before you need to display them. #249
A protocol (AuthenticationChallengeResponable) for responsing authentication challenge. You can now set authenticationChallengeResponder of ImageDownloader and use your own authentication policy. #226
An API (cachePathForKey(:)) to get real path for a specified key in a cache. #256

Fix

Disable background decoding for images from memory cache. This improves the performance of image loading for in-memory cached images and fix a flicker when you try to load image with background decoding. #257
A potential crash in ImageCache when an empty image is passed into.

2.0.4 - Sorry Pipelining (2016-02-27)

Fix

Make pipeling support to be disabled by default since it requiring server support. You can enable it by setting requestsUsePipeling in ImageDownloader. #253
Image transition now allows user interaction. #252

2.0.3 - Holiday Issues (2016-02-17)

Fix

A memory leak caused by retain cycle of downloader session and its delegate. #235
Now the callbackDispatchQueue in option should be applied to ImageDownloader as well. #238 and #240
Fix warnings when the latest version of SwiftLint is used. #189

2.0.2 - Single Frame GIF (2016-02-14)

Fix

An issue which causes GIF images with only one frame failing to be loaded correctly. #231

2.0.1 - Disk is back (2016-01-28)

Fix

An issue which causes the downloaded image not cached in disk. #224

2.0.0 - Kingfisher 2 (2016-01-23)

Add

OS X support. Now Kingfisher can work seamlessly for NSImage. #201
watchOS 2.x support. #210
Swift Package Manager support. #218
Unified KingfisherOptionsInfo API. Now all options across the framework are represented by KingfisherOptionsInfo with type same behavior. #194
API for changing download priority of image download task after the download started. #73
You can cancel image or background image downloading task now for button as well. #205

Fix

A potential thread issue when asking for cache state right after downloading finished.
Improve MD5 calculating speed. #220
The scale was not correct when processing GIF files.

1.9.3 (2016-01-22)

Fix

Stop indicator animation when loading failed. #215

1.9.2 - IOIOIO (2016-01-14)

Fix

A potential issue causes image cache checking method not working when the image just stored.
Better performance and image quality when storing images with original data.

1.9.1 - You happy, I happy (2016-01-04)

Fix

Making SwiftLint happy when building with Carthage. #189

1.9.0 - What a Task (2015-12-31)

Add

Download methods in ImageDownloader now returns a cancelable task. So you can cancel the downloading process when using downloader separately.
Add a cancelling method in image view extension for easier cancel operation.
Mark some properties of downloading task as public.

Fix

Cancelling of image downloading now triggers completion handler with NSURLErrorCancelled correctly now.

1.8.5 - Single Dog (2015-12-16)

Fix

Use single url session to download images.
Ignore and return error immediately for empty URL.
Internal update for testing stability and code style.

1.8.4 - GIF is GIF (2015-12-12)

Fix

Opt out the normalization and decoding for GIF, which would lead an issue that the GIF images missing.
Proper cost count for GIF image.

1.8.3 - Internal beauty (2015-12-05)

Fix

Fix for code base styles and formats.

1.8.2 - Path matters (2015-11-19)

Add

Cache path is customizable now. You can use Document folder to cache user generated images (But be caution that the disk cache files might be removed if limitation condition met).

1.8.1 - Transition needs rest (2015-11-13)

Fix

Only apply transition when images are downloaded. It will not show transition animation now if images loaded from either memory or disk cache now.
Code style.

1.8.0 - Bigger is Better (2015-11-07)

Add

Support for tvOS. Now enjoy downloading and cacheing images in the tvOS.

Fix

An issue which causes images not stored properly if the original data is not supplied. #142

1.7.1 - EXIF is JPEG! (2015-10-27)

Fix

EXIF JPEG support which was broken in 1.7.0.
Correct timing of completion handler for use case with transition of UIImageView extension.

1.7.0 - Kingfisher with animation (2015-10-25)

Add

GIF support. Now you can download and show an animated GIF by Kingfisher UIImageView extension.

Fix

Type safe options.
A potential retain of cache in loading task.

1.6.1 - No More Blinking (2015-10-09)

Fix

The blinking when reloading images in a cell.
Indicator is now in center of image view.

1.6.0 - Transition (2015-09-19)

Add

Add transition option. You can now use some view transition (like fade in) easier.

Fix

Image data presenting when storing in disk.

1.5.0 - Swift 2.0 (2015-09-10)

Add

Support for Swift 2.0.

Fix

Remove the disk retrieve task canceling temporarily since there is an issue in Xcode 7 beta.
Remove support for watchOS since it now requires a separated framework. It will be added later as a standalone library instead a fat one.

1.4.5 - Key decoupling (2015-08-14)

Fix

Added resource APIs so you can specify a cacheKey for an image. The default implementation will use the URL string as key.

1.4.4 - Bug fix release (2015-08-07)

Fix

Explicitly type casting in ImageCache. #86

1.4.3 (2015-08-06)

Fix

Fix orientation of PNG files.
Indicator hiding logic.

1.4.2 - Scaling (2015-07-09)

Add

Support for store and decode with scale parameter.

Fix

A retain cycle which prevents image retrieving task releasing.

1.4.1 (2015-05-12)

Fix

Fix library dependency to weak link for WatchKit.

1.4.0 - Hello, Apple Watch (2015-05-11)

Add

Apple Watch support and category on WKInterfaceImage.

1.3.1 (2015-05-06)

Fix

Fix tests for CI.

1.3.0 - 304? What is 304? (2015-05-01)

Add

ImageDownloaderDelegate for getting information from response.
A cacheType key in completion handler to let you know which does the image come from.
A notification when disk images are cleaned due to image expired or size exceeded.

Fix

Changed ForceRefresh behavior to respect server response when got a 304.
Documentation and test coverage.

1.2.0 - More, I need more! (2015-04-24)

Add

Multiple cache/downloader system. You can know specify the cache/downloader you need to use for each image request. It will be useful if you need different cache or download policy for different images.
Changed Options to OptionsInfo for flexible options passing.