diff --git a/Demo/YYWebImageDemo/YYWebImageExample.m b/Demo/YYWebImageDemo/YYWebImageExample.m
index bdd7522..34e2cb7 100644
--- a/Demo/YYWebImageDemo/YYWebImageExample.m
+++ b/Demo/YYWebImageDemo/YYWebImageExample.m
@@ -98,14 +98,15 @@ - (void)setImageURL:(NSURL *)url {
                               }
                           }
                           transform:nil
-                          completion:^(UIImage *image, NSURL *url, YYWebImageFromType from, YYWebImageStage stage, NSError *error) {
-                              if (stage == YYWebImageStageFinished) {
-                                  _self.progressLayer.hidden = YES;
-                                  [_self.indicator stopAnimating];
-                                  _self.indicator.hidden = YES;
-                                  if (!image) _self.label.hidden = NO;
-                              }
-                         }];
+                       transformKey:nil
+                           completion:^(UIImage *image, NSURL *url, YYWebImageFromType from, YYWebImageStage stage, NSError *error) {
+                               if (stage == YYWebImageStageFinished) {
+                                   _self.progressLayer.hidden = YES;
+                                   [_self.indicator stopAnimating];
+                                   _self.indicator.hidden = YES;
+                                   if (!image) _self.label.hidden = NO;
+                               }
+                           }];
 }
 
 - (void)prepareForReuse {
diff --git a/YYWebImage/Categories/CALayer+YYWebImage.h b/YYWebImage/Categories/CALayer+YYWebImage.h
index 722edd8..b79f280 100644
--- a/YYWebImage/Categories/CALayer+YYWebImage.h
+++ b/YYWebImage/Categories/CALayer+YYWebImage.h
@@ -69,30 +69,33 @@ NS_ASSUME_NONNULL_BEGIN
 /**
  Set the view's `image` with a specified URL.
  
- @param imageURL    The image url (remote or local file path).
- @param placeholder The image to be set initially, until the image request finishes.
- @param options     The options to use when request the image.
- @param progress    The block invoked (on main thread) during image request.
- @param transform   The block invoked (on background thread) to do additional image process.
- @param completion  The block invoked (on main thread) when image request completed.
+ @param imageURL     The image url (remote or local file path).
+ @param placeholder  The image to be set initially, until the image request finishes.
+ @param options      The options to use when request the image.
+ @param progress     The block invoked (on main thread) during image request.
+ @param transform    The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setImageWithURL:(nullable NSURL *)imageURL
                placeholder:(nullable UIImage *)placeholder
                    options:(YYWebImageOptions)options
                   progress:(nullable YYWebImageProgressBlock)progress
                  transform:(nullable YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
  Set the view's `image` with a specified URL.
  
- @param imageURL    The image url (remote or local file path).
- @param placeholder he image to be set initially, until the image request finishes.
- @param options     The options to use when request the image.
- @param manager     The manager to create image request operation.
- @param progress    The block invoked (on main thread) during image request.
- @param transform   The block invoked (on background thread) to do additional image process.
- @param completion  The block invoked (on main thread) when image request completed.
+ @param imageURL     The image url (remote or local file path).
+ @param placeholder  he image to be set initially, until the image request finishes.
+ @param options      The options to use when request the image.
+ @param manager      The manager to create image request operation.
+ @param progress     The block invoked (on main thread) during image request.
+ @param transform    The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setImageWithURL:(nullable NSURL *)imageURL
                placeholder:(nullable UIImage *)placeholder
@@ -100,6 +103,7 @@ NS_ASSUME_NONNULL_BEGIN
                    manager:(nullable YYWebImageManager *)manager
                   progress:(nullable YYWebImageProgressBlock)progress
                  transform:(nullable YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
diff --git a/YYWebImage/Categories/CALayer+YYWebImage.m b/YYWebImage/Categories/CALayer+YYWebImage.m
index 8309a0c..620e200 100644
--- a/YYWebImage/Categories/CALayer+YYWebImage.m
+++ b/YYWebImage/Categories/CALayer+YYWebImage.m
@@ -35,6 +35,7 @@ - (void)setYy_imageURL:(NSURL *)imageURL {
                   manager:nil
                  progress:nil
                 transform:nil
+             transformKey:nil
                completion:nil];
 }
 
@@ -45,6 +46,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL placeholder:(UIImage *)placeholder
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:nil];
 }
 
@@ -55,6 +57,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL options:(YYWebImageOptions)options
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:nil];
 }
 
@@ -68,6 +71,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:completion];
 }
 
@@ -76,6 +80,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                    options:(YYWebImageOptions)options
                   progress:(YYWebImageProgressBlock)progress
                  transform:(YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(YYWebImageCompletionBlock)completion {
     [self yy_setImageWithURL:imageURL
                  placeholder:placeholder
@@ -83,6 +88,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                      manager:nil
                     progress:progress
                    transform:transform
+                transformKey:transformKey
                   completion:completion];
 }
 
@@ -92,6 +98,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                    manager:(YYWebImageManager *)manager
                   progress:(YYWebImageProgressBlock)progress
                  transform:(YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(YYWebImageCompletionBlock)completion {
     if ([imageURL isKindOfClass:[NSString class]]) imageURL = [NSURL URLWithString:(id)imageURL];
     manager = manager ? manager : [YYWebImageManager sharedManager];
@@ -122,7 +129,8 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
         if (manager.cache &&
             !(options & YYWebImageOptionUseNSURLCache) &&
             !(options & YYWebImageOptionRefreshImageCache)) {
-            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL] withType:YYImageCacheTypeMemory];
+            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL transformKey:transformKey
+] withType:YYImageCacheTypeMemory];
         }
         if (imageFromMemory) {
             if (!(options & YYWebImageOptionAvoidSetImage)) {
@@ -173,7 +181,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                 });
             };
             
-            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform completion:_completion];
+            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform transformKey:transformKey completion:_completion];
             weakSetter = setter;
         });
         
diff --git a/YYWebImage/Categories/MKAnnotationView+YYWebImage.h b/YYWebImage/Categories/MKAnnotationView+YYWebImage.h
index b9bce0b..ec8803d 100644
--- a/YYWebImage/Categories/MKAnnotationView+YYWebImage.h
+++ b/YYWebImage/Categories/MKAnnotationView+YYWebImage.h
@@ -66,30 +66,33 @@ NS_ASSUME_NONNULL_BEGIN
 /**
  Set the view's `image` with a specified URL.
  
- @param imageURL    The image url (remote or local file path).
- @param placeholder The image to be set initially, until the image request finishes.
- @param options     The options to use when request the image.
- @param progress    The block invoked (on main thread) during image request.
- @param transform   The block invoked (on background thread) to do additional image process.
- @param completion  The block invoked (on main thread) when image request completed.
+ @param imageURL     The image url (remote or local file path).
+ @param placeholder  The image to be set initially, until the image request finishes.
+ @param options      The options to use when request the image.
+ @param progress     The block invoked (on main thread) during image request.
+ @param transform    The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setImageWithURL:(nullable NSURL *)imageURL
                placeholder:(nullable UIImage *)placeholder
                    options:(YYWebImageOptions)options
                   progress:(nullable YYWebImageProgressBlock)progress
                  transform:(nullable YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
  Set the view's `image` with a specified URL.
  
- @param imageURL    The image url (remote or local file path).
- @param placeholder he image to be set initially, until the image request finishes.
- @param options     The options to use when request the image.
- @param manager     The manager to create image request operation.
- @param progress    The block invoked (on main thread) during image request.
- @param transform   The block invoked (on background thread) to do additional image process.
- @param completion  The block invoked (on main thread) when image request completed.
+ @param imageURL     The image url (remote or local file path).
+ @param placeholder  he image to be set initially, until the image request finishes.
+ @param options      The options to use when request the image.
+ @param manager      The manager to create image request operation.
+ @param progress     The block invoked (on main thread) during image request.
+ @param transform    The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setImageWithURL:(nullable NSURL *)imageURL
                placeholder:(nullable UIImage *)placeholder
@@ -97,6 +100,7 @@ NS_ASSUME_NONNULL_BEGIN
                    manager:(nullable YYWebImageManager *)manager
                   progress:(nullable YYWebImageProgressBlock)progress
                  transform:(nullable YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
diff --git a/YYWebImage/Categories/MKAnnotationView+YYWebImage.m b/YYWebImage/Categories/MKAnnotationView+YYWebImage.m
index d9afff4..d213613 100644
--- a/YYWebImage/Categories/MKAnnotationView+YYWebImage.m
+++ b/YYWebImage/Categories/MKAnnotationView+YYWebImage.m
@@ -35,6 +35,7 @@ - (void)setYy_imageURL:(NSURL *)imageURL {
                   manager:nil
                  progress:nil
                 transform:nil
+             transformKey:nil
                completion:nil];
 }
 
@@ -45,6 +46,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL placeholder:(UIImage *)placeholder
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:nil];
 }
 
@@ -55,6 +57,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL options:(YYWebImageOptions)options
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:nil];
 }
 
@@ -68,6 +71,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:completion];
 }
 
@@ -76,6 +80,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                    options:(YYWebImageOptions)options
                   progress:(YYWebImageProgressBlock)progress
                  transform:(YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(YYWebImageCompletionBlock)completion {
     [self yy_setImageWithURL:imageURL
                  placeholder:placeholder
@@ -83,6 +88,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                      manager:nil
                     progress:progress
                    transform:transform
+                transformKey:transformKey
                   completion:completion];
 }
 
@@ -92,6 +98,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                    manager:(YYWebImageManager *)manager
                   progress:(YYWebImageProgressBlock)progress
                  transform:(YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(YYWebImageCompletionBlock)completion {
     if ([imageURL isKindOfClass:[NSString class]]) imageURL = [NSURL URLWithString:(id)imageURL];
     manager = manager ? manager : [YYWebImageManager sharedManager];
@@ -122,7 +129,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
         if (manager.cache &&
             !(options & YYWebImageOptionUseNSURLCache) &&
             !(options & YYWebImageOptionRefreshImageCache)) {
-            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL] withType:YYImageCacheTypeMemory];
+            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL transformKey:transformKey] withType:YYImageCacheTypeMemory];
         }
         if (imageFromMemory) {
             if (!(options & YYWebImageOptionAvoidSetImage)) {
@@ -173,7 +180,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                 });
             };
             
-            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform completion:_completion];
+            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform transformKey:transformKey completion:_completion];
             weakSetter = setter;
         });
     });
diff --git a/YYWebImage/Categories/UIButton+YYWebImage.h b/YYWebImage/Categories/UIButton+YYWebImage.h
index 7ad6eff..e39b066 100644
--- a/YYWebImage/Categories/UIButton+YYWebImage.h
+++ b/YYWebImage/Categories/UIButton+YYWebImage.h
@@ -72,13 +72,14 @@ NS_ASSUME_NONNULL_BEGIN
 /**
  Set the button's image with a specified URL for the specified state.
  
- @param imageURL    The image url (remote or local file path).
- @param state       The state that uses the specified image.
- @param placeholder The image to be set initially, until the image request finishes.
- @param options     The options to use when request the image.
- @param progress    The block invoked (on main thread) during image request.
- @param transform   The block invoked (on background thread) to do additional image process.
- @param completion  The block invoked (on main thread) when image request completed.
+ @param imageURL     The image url (remote or local file path).
+ @param state        The state that uses the specified image.
+ @param placeholder  The image to be set initially, until the image request finishes.
+ @param options      The options to use when request the image.
+ @param progress     The block invoked (on main thread) during image request.
+ @param transform    The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setImageWithURL:(nullable NSURL *)imageURL
                   forState:(UIControlState)state
@@ -86,19 +87,21 @@ NS_ASSUME_NONNULL_BEGIN
                    options:(YYWebImageOptions)options
                   progress:(nullable YYWebImageProgressBlock)progress
                  transform:(nullable YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
  Set the button's image with a specified URL for the specified state.
  
- @param imageURL    The image url (remote or local file path).
- @param state       The state that uses the specified image.
- @param placeholder The image to be set initially, until the image request finishes.
- @param options     The options to use when request the image.
- @param manager     The manager to create image request operation.
- @param progress    The block invoked (on main thread) during image request.
- @param transform   The block invoked (on background thread) to do additional image process.
- @param completion  The block invoked (on main thread) when image request completed.
+ @param imageURL     The image url (remote or local file path).
+ @param state        The state that uses the specified image.
+ @param placeholder  The image to be set initially, until the image request finishes.
+ @param options      The options to use when request the image.
+ @param manager      The manager to create image request operation.
+ @param progress     The block invoked (on main thread) during image request.
+ @param transform    The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setImageWithURL:(nullable NSURL *)imageURL
                   forState:(UIControlState)state
@@ -107,6 +110,7 @@ NS_ASSUME_NONNULL_BEGIN
                    manager:(nullable YYWebImageManager *)manager
                   progress:(nullable YYWebImageProgressBlock)progress
                  transform:(nullable YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
@@ -171,6 +175,7 @@ NS_ASSUME_NONNULL_BEGIN
  @param options     The options to use when request the image.
  @param progress    The block invoked (on main thread) during image request.
  @param transform   The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
  @param completion  The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setBackgroundImageWithURL:(nullable NSURL *)imageURL
@@ -179,19 +184,21 @@ NS_ASSUME_NONNULL_BEGIN
                              options:(YYWebImageOptions)options
                             progress:(nullable YYWebImageProgressBlock)progress
                            transform:(nullable YYWebImageTransformBlock)transform
+                        transformKey:(nullable NSString *)transformKey
                           completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
  Set the button's backgroundImage with a specified URL for the specified state.
  
- @param imageURL    The image url (remote or local file path).
- @param state       The state that uses the specified image.
- @param placeholder The image to be set initially, until the image request finishes.
- @param options     The options to use when request the image.
- @param manager     The manager to create image request operation.
- @param progress    The block invoked (on main thread) during image request.
- @param transform   The block invoked (on background thread) to do additional image process.
- @param completion  The block invoked (on main thread) when image request completed.
+ @param imageURL     The image url (remote or local file path).
+ @param state        The state that uses the specified image.
+ @param placeholder  The image to be set initially, until the image request finishes.
+ @param options      The options to use when request the image.
+ @param manager      The manager to create image request operation.
+ @param progress     The block invoked (on main thread) during image request.
+ @param transform    The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setBackgroundImageWithURL:(nullable NSURL *)imageURL
                             forState:(UIControlState)state
@@ -200,6 +207,7 @@ NS_ASSUME_NONNULL_BEGIN
                              manager:(nullable YYWebImageManager *)manager
                             progress:(nullable YYWebImageProgressBlock)progress
                            transform:(nullable YYWebImageTransformBlock)transform
+                        transformKey:(nullable NSString *)transformKey
                           completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
diff --git a/YYWebImage/Categories/UIButton+YYWebImage.m b/YYWebImage/Categories/UIButton+YYWebImage.m
index 8cc21d5..ea795a3 100644
--- a/YYWebImage/Categories/UIButton+YYWebImage.m
+++ b/YYWebImage/Categories/UIButton+YYWebImage.m
@@ -84,6 +84,7 @@ - (void)_yy_setImageWithURL:(NSURL *)imageURL
                     manager:(YYWebImageManager *)manager
                    progress:(YYWebImageProgressBlock)progress
                   transform:(YYWebImageTransformBlock)transform
+               transformKey:(nullable NSString *)transformKey
                  completion:(YYWebImageCompletionBlock)completion {
     if ([imageURL isKindOfClass:[NSString class]]) imageURL = [NSURL URLWithString:(id)imageURL];
     manager = manager ? manager : [YYWebImageManager sharedManager];
@@ -109,7 +110,7 @@ - (void)_yy_setImageWithURL:(NSURL *)imageURL
         if (manager.cache &&
             !(options & YYWebImageOptionUseNSURLCache) &&
             !(options & YYWebImageOptionRefreshImageCache)) {
-            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL] withType:YYImageCacheTypeMemory];
+            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL transformKey:transformKey] withType:YYImageCacheTypeMemory];
         }
         if (imageFromMemory) {
             if (!(options & YYWebImageOptionAvoidSetImage)) {
@@ -153,7 +154,7 @@ - (void)_yy_setImageWithURL:(NSURL *)imageURL
                 });
             };
             
-            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform completion:_completion];
+            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform transformKey:transformKey completion:_completion];
             weakSetter = setter;
         });
     });
@@ -181,6 +182,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                   manager:nil
                  progress:nil
                 transform:nil
+             transformKey:nil
                completion:nil];
 }
 
@@ -194,6 +196,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:nil];
 }
 
@@ -209,6 +212,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:completion];
 }
 
@@ -218,6 +222,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                    options:(YYWebImageOptions)options
                   progress:(YYWebImageProgressBlock)progress
                  transform:(YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(YYWebImageCompletionBlock)completion {
     [self yy_setImageWithURL:imageURL
                     forState:state
@@ -226,6 +231,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                      manager:nil
                     progress:progress
                    transform:transform
+                transformKey:transformKey
                   completion:completion];
 }
 
@@ -236,6 +242,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                    manager:(YYWebImageManager *)manager
                   progress:(YYWebImageProgressBlock)progress
                  transform:(YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(YYWebImageCompletionBlock)completion {
     for (NSNumber *num in UIControlStateMulti(state)) {
         [self _yy_setImageWithURL:imageURL
@@ -245,6 +252,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                           manager:manager
                          progress:progress
                         transform:transform
+                     transformKey:transformKey
                        completion:completion];
     }
 }
@@ -265,6 +273,7 @@ - (void)_yy_setBackgroundImageWithURL:(NSURL *)imageURL
                               manager:(YYWebImageManager *)manager
                              progress:(YYWebImageProgressBlock)progress
                             transform:(YYWebImageTransformBlock)transform
+                         transformKey:(nullable NSString *)transformKey
                            completion:(YYWebImageCompletionBlock)completion {
     if ([imageURL isKindOfClass:[NSString class]]) imageURL = [NSURL URLWithString:(id)imageURL];
     manager = manager ? manager : [YYWebImageManager sharedManager];
@@ -290,7 +299,7 @@ - (void)_yy_setBackgroundImageWithURL:(NSURL *)imageURL
         if (manager.cache &&
             !(options & YYWebImageOptionUseNSURLCache) &&
             !(options & YYWebImageOptionRefreshImageCache)) {
-            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL] withType:YYImageCacheTypeMemory];
+            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL transformKey:transformKey] withType:YYImageCacheTypeMemory];
         }
         if (imageFromMemory) {
             if (!(options & YYWebImageOptionAvoidSetImage)) {
@@ -334,7 +343,7 @@ - (void)_yy_setBackgroundImageWithURL:(NSURL *)imageURL
                 });
             };
             
-            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform completion:_completion];
+            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform transformKey:transformKey completion:_completion];
             weakSetter = setter;
         });
     });
@@ -362,6 +371,7 @@ - (void)yy_setBackgroundImageWithURL:(NSURL *)imageURL
                                manager:nil
                               progress:nil
                              transform:nil
+                          transformKey:nil
                             completion:nil];
 }
 
@@ -375,6 +385,7 @@ - (void)yy_setBackgroundImageWithURL:(NSURL *)imageURL
                                manager:nil
                               progress:nil
                              transform:nil
+                          transformKey:nil
                             completion:nil];
 }
 
@@ -390,6 +401,7 @@ - (void)yy_setBackgroundImageWithURL:(NSURL *)imageURL
                                manager:nil
                               progress:nil
                              transform:nil
+                          transformKey:nil
                             completion:completion];
 }
 
@@ -399,6 +411,7 @@ - (void)yy_setBackgroundImageWithURL:(NSURL *)imageURL
                              options:(YYWebImageOptions)options
                             progress:(YYWebImageProgressBlock)progress
                            transform:(YYWebImageTransformBlock)transform
+                        transformKey:(nullable NSString *)transformKey
                           completion:(YYWebImageCompletionBlock)completion {
     [self yy_setBackgroundImageWithURL:imageURL
                               forState:state
@@ -407,6 +420,7 @@ - (void)yy_setBackgroundImageWithURL:(NSURL *)imageURL
                                manager:nil
                               progress:progress
                              transform:transform
+                          transformKey:transformKey
                             completion:completion];
 }
 
@@ -417,6 +431,7 @@ - (void)yy_setBackgroundImageWithURL:(NSURL *)imageURL
                              manager:(YYWebImageManager *)manager
                             progress:(YYWebImageProgressBlock)progress
                            transform:(YYWebImageTransformBlock)transform
+                        transformKey:(nullable NSString *)transformKey
                           completion:(YYWebImageCompletionBlock)completion {
     for (NSNumber *num in UIControlStateMulti(state)) {
         [self _yy_setBackgroundImageWithURL:imageURL
@@ -426,6 +441,7 @@ - (void)yy_setBackgroundImageWithURL:(NSURL *)imageURL
                                     manager:manager
                                    progress:progress
                                   transform:transform
+                               transformKey:transformKey
                                  completion:completion];
     }
 }
diff --git a/YYWebImage/Categories/UIImageView+YYWebImage.h b/YYWebImage/Categories/UIImageView+YYWebImage.h
index 6a66233..b232fb0 100644
--- a/YYWebImage/Categories/UIImageView+YYWebImage.h
+++ b/YYWebImage/Categories/UIImageView+YYWebImage.h
@@ -67,30 +67,33 @@ NS_ASSUME_NONNULL_BEGIN
 /**
  Set the view's `image` with a specified URL.
  
- @param imageURL    The image url (remote or local file path).
- @param placeholder The image to be set initially, until the image request finishes.
- @param options     The options to use when request the image.
- @param progress    The block invoked (on main thread) during image request.
- @param transform   The block invoked (on background thread) to do additional image process.
- @param completion  The block invoked (on main thread) when image request completed.
+ @param imageURL     The image url (remote or local file path).
+ @param placeholder  The image to be set initially, until the image request finishes.
+ @param options      The options to use when request the image.
+ @param progress     The block invoked (on main thread) during image request.
+ @param transform    The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setImageWithURL:(nullable NSURL *)imageURL
                placeholder:(nullable UIImage *)placeholder
                    options:(YYWebImageOptions)options
                   progress:(nullable YYWebImageProgressBlock)progress
                  transform:(nullable YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
  Set the view's `image` with a specified URL.
  
- @param imageURL    The image url (remote or local file path).
- @param placeholder he image to be set initially, until the image request finishes.
- @param options     The options to use when request the image.
- @param manager     The manager to create image request operation.
- @param progress    The block invoked (on main thread) during image request.
- @param transform   The block invoked (on background thread) to do additional image process.
- @param completion  The block invoked (on main thread) when image request completed.
+ @param imageURL     The image url (remote or local file path).
+ @param placeholder  he image to be set initially, until the image request finishes.
+ @param options      The options to use when request the image.
+ @param manager      The manager to create image request operation.
+ @param progress     The block invoked (on main thread) during image request.
+ @param transform    The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setImageWithURL:(nullable NSURL *)imageURL
                placeholder:(nullable UIImage *)placeholder
@@ -98,6 +101,7 @@ NS_ASSUME_NONNULL_BEGIN
                    manager:(nullable YYWebImageManager *)manager
                   progress:(nullable YYWebImageProgressBlock)progress
                  transform:(nullable YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
@@ -155,6 +159,7 @@ NS_ASSUME_NONNULL_BEGIN
  @param options     The options to use when request the image.
  @param progress    The block invoked (on main thread) during image request.
  @param transform   The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
  @param completion  The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setHighlightedImageWithURL:(nullable NSURL *)imageURL
@@ -162,6 +167,7 @@ NS_ASSUME_NONNULL_BEGIN
                               options:(YYWebImageOptions)options
                              progress:(nullable YYWebImageProgressBlock)progress
                             transform:(nullable YYWebImageTransformBlock)transform
+                         transformKey:(nullable NSString *)transformKey
                            completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
@@ -173,6 +179,7 @@ NS_ASSUME_NONNULL_BEGIN
  @param manager     The manager to create image request operation.
  @param progress    The block invoked (on main thread) during image request.
  @param transform   The block invoked (on background thread) to do additional image process.
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
  @param completion  The block invoked (on main thread) when image request completed.
  */
 - (void)yy_setHighlightedImageWithURL:(nullable NSURL *)imageURL
@@ -181,6 +188,7 @@ NS_ASSUME_NONNULL_BEGIN
                               manager:(nullable YYWebImageManager *)manager
                              progress:(nullable YYWebImageProgressBlock)progress
                             transform:(nullable YYWebImageTransformBlock)transform
+                         transformKey:(nullable NSString *)transformKey
                            completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
diff --git a/YYWebImage/Categories/UIImageView+YYWebImage.m b/YYWebImage/Categories/UIImageView+YYWebImage.m
index 1719a12..1dd1c6f 100644
--- a/YYWebImage/Categories/UIImageView+YYWebImage.m
+++ b/YYWebImage/Categories/UIImageView+YYWebImage.m
@@ -38,6 +38,7 @@ - (void)setYy_imageURL:(NSURL *)imageURL {
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:nil];
 }
 
@@ -48,6 +49,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL placeholder:(UIImage *)placeholder
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:nil];
 }
 
@@ -58,6 +60,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL options:(YYWebImageOptions)options
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:nil];
 }
 
@@ -71,6 +74,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                      manager:nil
                     progress:nil
                    transform:nil
+                transformKey:nil
                   completion:completion];
 }
 
@@ -79,6 +83,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                    options:(YYWebImageOptions)options
                   progress:(YYWebImageProgressBlock)progress
                  transform:(YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(YYWebImageCompletionBlock)completion {
     [self yy_setImageWithURL:imageURL
                  placeholder:placeholder
@@ -86,6 +91,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                      manager:nil
                     progress:progress
                    transform:transform
+                transformKey:transformKey
                   completion:completion];
 }
 
@@ -95,6 +101,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                    manager:(YYWebImageManager *)manager
                   progress:(YYWebImageProgressBlock)progress
                  transform:(YYWebImageTransformBlock)transform
+              transformKey:(nullable NSString *)transformKey
                 completion:(YYWebImageCompletionBlock)completion {
     if ([imageURL isKindOfClass:[NSString class]]) imageURL = [NSURL URLWithString:(id)imageURL];
     manager = manager ? manager : [YYWebImageManager sharedManager];
@@ -126,7 +133,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
         if (manager.cache &&
             !(options & YYWebImageOptionUseNSURLCache) &&
             !(options & YYWebImageOptionRefreshImageCache)) {
-            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL] withType:YYImageCacheTypeMemory];
+            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL transformKey:transformKey] withType:YYImageCacheTypeMemory];
         }
         if (imageFromMemory) {
             if (!(options & YYWebImageOptionAvoidSetImage)) {
@@ -177,7 +184,7 @@ - (void)yy_setImageWithURL:(NSURL *)imageURL
                 });
             };
             
-            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform completion:_completion];
+            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform transformKey:transformKey completion:_completion];
             weakSetter = setter;
         });
     });
@@ -203,6 +210,7 @@ - (void)setYy_highlightedImageURL:(NSURL *)imageURL {
                                 manager:nil
                                progress:nil
                               transform:nil
+                           transformKey:nil
                              completion:nil];
 }
 
@@ -213,6 +221,7 @@ - (void)yy_setHighlightedImageWithURL:(NSURL *)imageURL placeholder:(UIImage *)p
                                 manager:nil
                                progress:nil
                               transform:nil
+                           transformKey:nil
                              completion:nil];
 }
 
@@ -223,6 +232,7 @@ - (void)yy_setHighlightedImageWithURL:(NSURL *)imageURL options:(YYWebImageOptio
                                 manager:nil
                                progress:nil
                               transform:nil
+                           transformKey:nil
                              completion:nil];
 }
 
@@ -236,6 +246,7 @@ - (void)yy_setHighlightedImageWithURL:(NSURL *)imageURL
                                 manager:nil
                                progress:nil
                               transform:nil
+                           transformKey:nil
                              completion:completion];
 }
 
@@ -244,6 +255,7 @@ - (void)yy_setHighlightedImageWithURL:(NSURL *)imageURL
                               options:(YYWebImageOptions)options
                              progress:(YYWebImageProgressBlock)progress
                             transform:(YYWebImageTransformBlock)transform
+                         transformKey:(nullable NSString *)transformKey
                            completion:(YYWebImageCompletionBlock)completion {
     [self yy_setHighlightedImageWithURL:imageURL
                             placeholder:placeholder
@@ -251,6 +263,7 @@ - (void)yy_setHighlightedImageWithURL:(NSURL *)imageURL
                                 manager:nil
                                progress:progress
                               transform:nil
+                           transformKey:transformKey
                              completion:completion];
 }
 
@@ -260,6 +273,7 @@ - (void)yy_setHighlightedImageWithURL:(NSURL *)imageURL
                               manager:(YYWebImageManager *)manager
                              progress:(YYWebImageProgressBlock)progress
                             transform:(YYWebImageTransformBlock)transform
+                         transformKey:(nullable NSString *)transformKey
                            completion:(YYWebImageCompletionBlock)completion {
     if ([imageURL isKindOfClass:[NSString class]]) imageURL = [NSURL URLWithString:(id)imageURL];
     manager = manager ? manager : [YYWebImageManager sharedManager];
@@ -290,7 +304,7 @@ - (void)yy_setHighlightedImageWithURL:(NSURL *)imageURL
         if (manager.cache &&
             !(options & YYWebImageOptionUseNSURLCache) &&
             !(options & YYWebImageOptionRefreshImageCache)) {
-            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL] withType:YYImageCacheTypeMemory];
+            imageFromMemory = [manager.cache getImageForKey:[manager cacheKeyForURL:imageURL transformKey:transformKey] withType:YYImageCacheTypeMemory];
         }
         if (imageFromMemory) {
             if (!(options & YYWebImageOptionAvoidSetImage)) {
@@ -341,7 +355,7 @@ - (void)yy_setHighlightedImageWithURL:(NSURL *)imageURL
                 });
             };
             
-            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform completion:_completion];
+            newSentinel = [setter setOperationWithSentinel:sentinel url:imageURL options:options manager:manager progress:_progress transform:transform transformKey:transformKey completion:_completion];
             weakSetter = setter;
         });
     });
diff --git a/YYWebImage/Categories/_YYWebImageSetter.h b/YYWebImage/Categories/_YYWebImageSetter.h
index cf5a118..cd1e2c4 100644
--- a/YYWebImage/Categories/_YYWebImageSetter.h
+++ b/YYWebImage/Categories/_YYWebImageSetter.h
@@ -51,6 +51,7 @@ extern const NSTimeInterval _YYWebImageProgressiveFadeTime;
                             manager:(YYWebImageManager *)manager
                            progress:(nullable YYWebImageProgressBlock)progress
                           transform:(nullable YYWebImageTransformBlock)transform
+                       transformKey:(nullable NSString *)transformKey
                          completion:(nullable YYWebImageCompletionBlock)completion;
 
 /// Cancel and return a sentinel value. The imageURL will be set to nil.
diff --git a/YYWebImage/Categories/_YYWebImageSetter.m b/YYWebImage/Categories/_YYWebImageSetter.m
index ec3c99b..6d34591 100644
--- a/YYWebImage/Categories/_YYWebImageSetter.m
+++ b/YYWebImage/Categories/_YYWebImageSetter.m
@@ -49,13 +49,14 @@ - (int32_t)setOperationWithSentinel:(int32_t)sentinel
                             manager:(YYWebImageManager *)manager
                            progress:(YYWebImageProgressBlock)progress
                           transform:(YYWebImageTransformBlock)transform
+                       transformKey:(nullable NSString *)transformKey
                          completion:(YYWebImageCompletionBlock)completion {
     if (sentinel != _sentinel) {
         if (completion) completion(nil, imageURL, YYWebImageFromNone, YYWebImageStageCancelled, nil);
         return _sentinel;
     }
     
-    NSOperation *operation = [manager requestImageWithURL:imageURL options:options progress:progress transform:transform completion:completion];
+    NSOperation *operation = [manager requestImageWithURL:imageURL options:options progress:progress transform:transform                transformKey:transformKey completion:completion];
     if (!operation && completion) {
         NSDictionary *userInfo = @{ NSLocalizedDescriptionKey : @"YYWebImageOperation create failed." };
         completion(nil, imageURL, YYWebImageFromNone, YYWebImageStageFinished, [NSError errorWithDomain:@"com.ibireme.webimage" code:-1 userInfo:userInfo]);
diff --git a/YYWebImage/YYWebImageManager.h b/YYWebImage/YYWebImageManager.h
index 6947faf..915de4d 100644
--- a/YYWebImage/YYWebImageManager.h
+++ b/YYWebImage/YYWebImageManager.h
@@ -188,17 +188,19 @@ typedef void (^YYWebImageCompletionBlock)(UIImage * _Nullable image,
 /**
  Creates and returns a new image operation, the operation will start immediately.
  
- @param url        The image url (remote or local file path).
- @param options    The options to control image operation.
- @param progress   Progress block which will be invoked on background thread (pass nil to avoid).
- @param transform  Transform block which will be invoked on background thread  (pass nil to avoid).
- @param completion Completion block which will be invoked on background thread  (pass nil to avoid).
+ @param url          The image url (remote or local file path).
+ @param options      The options to control image operation.
+ @param progress     Progress block which will be invoked on background thread (pass nil to avoid).
+ @param transform    Transform block which will be invoked on background thread  (pass nil to avoid).
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+ @param completion   Completion block which will be invoked on background thread  (pass nil to avoid).
  @return A new image operation.
  */
 - (nullable YYWebImageOperation *)requestImageWithURL:(NSURL *)url
                                               options:(YYWebImageOptions)options
                                              progress:(nullable YYWebImageProgressBlock)progress
                                             transform:(nullable YYWebImageTransformBlock)transform
+                                         transformKey:(nullable NSString *)transformKey
                                            completion:(nullable YYWebImageCompletionBlock)completion;
 
 /**
@@ -273,7 +275,7 @@ typedef void (^YYWebImageCompletionBlock)(UIImage * _Nullable image,
  @param url A specified URL
  @return Cache key used in YYImageCache.
  */
-- (NSString *)cacheKeyForURL:(NSURL *)url;
+- (NSString *)cacheKeyForURL:(NSURL *)url transformKey:(nullable NSString *)transformKey;
 
 
 /**
diff --git a/YYWebImage/YYWebImageManager.m b/YYWebImage/YYWebImageManager.m
index 784fd8b..18d33cd 100644
--- a/YYWebImage/YYWebImageManager.m
+++ b/YYWebImage/YYWebImageManager.m
@@ -80,6 +80,7 @@ - (YYWebImageOperation *)requestImageWithURL:(NSURL *)url
                                      options:(YYWebImageOptions)options
                                     progress:(YYWebImageProgressBlock)progress
                                    transform:(YYWebImageTransformBlock)transform
+                                transformKey:(nullable NSString *)transformKey
                                   completion:(YYWebImageCompletionBlock)completion {
     
     NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
@@ -90,13 +91,14 @@ - (YYWebImageOperation *)requestImageWithURL:(NSURL *)url
     request.cachePolicy = (options & YYWebImageOptionUseNSURLCache) ?
         NSURLRequestUseProtocolCachePolicy : NSURLRequestReloadIgnoringLocalCacheData;
     
-    YYWebImageOperation *operation = [[YYWebImageOperation alloc] initWithRequest:request
-                                                                          options:options
-                                                                            cache:_cache
-                                                                         cacheKey:[self cacheKeyForURL:url]
-                                                                         progress:progress
-                                                                        transform:transform ? transform : _sharedTransformBlock
-                                                                       completion:completion];
+    YYWebImageOperation *operation = [[YYWebImageOperation alloc]initWithRequest:request
+                                                                         options:options
+                                                                           cache:_cache
+                                                                        cacheKey:[self cacheKeyForURL:url transformKey:transformKey]
+                                                                        progress:progress
+                                                                       transform:transform ? transform : _sharedTransformBlock
+                                                                    transformKey:transformKey
+                                                                      completion:completion];
 
     if (_username && _password) {
         operation.credential = [NSURLCredential credentialWithUser:_username password:_password persistence:NSURLCredentialPersistenceForSession];
@@ -117,13 +119,15 @@ - (NSDictionary *)headersForURL:(NSURL *)url {
     return _headersFilter ? _headersFilter(url, _headers) : _headers;
 }
 
-- (NSString *)cacheKeyForURL:(NSURL *)url {
+- (NSString *)cacheKeyForURL:(NSURL *)url transformKey:(nullable NSString *)transformKey {
     if (!url) return nil;
-    return _cacheKeyFilter ? _cacheKeyFilter(url) : url.absoluteString;
+    NSString *cacheKey = _cacheKeyFilter ? _cacheKeyFilter(url) : url.absoluteString;
+    if (transformKey)
+        return [NSString stringWithFormat:@"%@--%@", cacheKey, transformKey];
+    else
+        return cacheKey;
 }
 
-
-
 #pragma mark Network Indicator
 
 + (_YYWebImageApplicationNetworkIndicatorInfo *)_networkIndicatorInfo {
diff --git a/YYWebImage/YYWebImageOperation.h b/YYWebImage/YYWebImageOperation.h
index d15eb3b..67ad62d 100644
--- a/YYWebImage/YYWebImageOperation.h
+++ b/YYWebImage/YYWebImageOperation.h
@@ -78,7 +78,8 @@ NS_ASSUME_NONNULL_BEGIN
                      The block will be invoked in background thread. Pass nil to avoid it.
  @param completion A block invoked when image fetch finished or cancelled.
                      The block will be invoked in background thread. Pass nil to avoid it.
- 
+ @param transformKey 转换key，链接相同但key不同会有不同的缓存
+
  @return The image request opeartion, or nil if an error occurs.
  */
 - (instancetype)initWithRequest:(NSURLRequest *)request
@@ -87,6 +88,7 @@ NS_ASSUME_NONNULL_BEGIN
                        cacheKey:(nullable NSString *)cacheKey
                        progress:(nullable YYWebImageProgressBlock)progress
                       transform:(nullable YYWebImageTransformBlock)transform
+                   transformKey:(nullable NSString *)transformKey
                      completion:(nullable YYWebImageCompletionBlock)completion NS_DESIGNATED_INITIALIZER;
 
 - (instancetype)init UNAVAILABLE_ATTRIBUTE;
diff --git a/YYWebImage/YYWebImageOperation.m b/YYWebImage/YYWebImageOperation.m
index 118dd6d..5c38542 100644
--- a/YYWebImage/YYWebImageOperation.m
+++ b/YYWebImage/YYWebImageOperation.m
@@ -178,6 +178,7 @@ @interface YYWebImageOperation() <NSURLConnectionDelegate>
 
 @property (nonatomic, copy) YYWebImageProgressBlock progress;
 @property (nonatomic, copy) YYWebImageTransformBlock transform;
+@property (nonatomic, copy) NSString *transformKey;
 @property (nonatomic, copy) YYWebImageCompletionBlock completion;
 @end
 
@@ -241,7 +242,7 @@ + (dispatch_queue_t)_imageQueue {
 
 - (instancetype)init {
     @throw [NSException exceptionWithName:@"YYWebImageOperation init error" reason:@"YYWebImageOperation must be initialized with a request. Use the designated initializer to init." userInfo:nil];
-    return [self initWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@""]] options:0 cache:nil cacheKey:nil progress:nil transform:nil completion:nil];
+    return [self initWithRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:@""]] options:0 cache:nil cacheKey:nil progress:nil transform:nil transformKey:nil completion:nil];
 }
 
 - (instancetype)initWithRequest:(NSURLRequest *)request
@@ -250,6 +251,7 @@ - (instancetype)initWithRequest:(NSURLRequest *)request
                        cacheKey:(NSString *)cacheKey
                        progress:(YYWebImageProgressBlock)progress
                       transform:(YYWebImageTransformBlock)transform
+                   transformKey:(nullable NSString *)transformKey
                      completion:(YYWebImageCompletionBlock)completion {
     self = [super init];
     if (!self) return nil;
@@ -261,6 +263,7 @@ - (instancetype)initWithRequest:(NSURLRequest *)request
     _shouldUseCredentialStorage = YES;
     _progress = progress;
     _transform = transform;
+    _transformKey = transformKey;
     _completion = completion;
     _executing = NO;
     _finished = NO;