diff --git a/SDWebImage/NSData+GIF.h b/SDWebImage/NSData+GIF.h
index 556d7a27..9065bc67 100644
--- a/SDWebImage/NSData+GIF.h
+++ b/SDWebImage/NSData+GIF.h
@@ -10,6 +10,6 @@
 
 @interface NSData (GIF)
 
-- (BOOL)isGIF;
+- (BOOL)sd_isGIF;
 
 @end
diff --git a/SDWebImage/NSData+GIF.m b/SDWebImage/NSData+GIF.m
index 3ed233cf..13f2e980 100644
--- a/SDWebImage/NSData+GIF.m
+++ b/SDWebImage/NSData+GIF.m
@@ -10,7 +10,7 @@
 
 @implementation NSData (GIF)
 
-- (BOOL)isGIF
+- (BOOL)sd_isGIF
 {
     BOOL isGIF = NO;
     
diff --git a/SDWebImage/SDImageCache.m b/SDWebImage/SDImageCache.m
index df86c32b..5c7251ba 100644
--- a/SDWebImage/SDImageCache.m
+++ b/SDWebImage/SDImageCache.m
@@ -181,9 +181,9 @@ static const NSInteger kDefaultCacheMaxCacheAge = 60 * 60 * 24 * 7; // 1 week
     NSData *data = [NSData dataWithContentsOfFile:path];
     if (data)
     {
-        if ([data isGIF])
+        if ([data sd_isGIF])
         {
-            UIImage *image = [UIImage animatedGIFWithData:data];
+            UIImage *image = [UIImage sd_animatedGIFWithData:data];
             return [self scaledImageForKey:key image:image];
         }
         else
diff --git a/SDWebImage/SDWebImageDownloaderOperation.m b/SDWebImage/SDWebImageDownloaderOperation.m
index b1717d35..9255411b 100644
--- a/SDWebImage/SDWebImageDownloaderOperation.m
+++ b/SDWebImage/SDWebImageDownloaderOperation.m
@@ -275,12 +275,12 @@
         }
         else
         {
-            BOOL isImageGIF = [self.imageData isGIF];
+            BOOL isImageGIF = [self.imageData sd_isGIF];
             
             UIImage *image;
             if (isImageGIF)
             {
-                image = [UIImage animatedGIFWithData:self.imageData];
+                image = [UIImage sd_animatedGIFWithData:self.imageData];
             }
             else
             {
diff --git a/SDWebImage/SDWebImageManager.m b/SDWebImage/SDWebImageManager.m
index 825f7476..c5dafcdb 100644
--- a/SDWebImage/SDWebImageManager.m
+++ b/SDWebImage/SDWebImageManager.m
@@ -150,7 +150,7 @@
                     {
                         dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0), ^
                                        {
-                            BOOL isImageGIF = [data isGIF];
+                            BOOL isImageGIF = [data sd_isGIF];
                             UIImage *transformedImage = isImageGIF ? downloadedImage : [self.delegate imageManager:self transformDownloadedImage:downloadedImage withURL:url];
 
                             dispatch_async(dispatch_get_main_queue(), ^
diff --git a/SDWebImage/UIImage+GIF.h b/SDWebImage/UIImage+GIF.h
index 3006de58..1183035b 100755
--- a/SDWebImage/UIImage+GIF.h
+++ b/SDWebImage/UIImage+GIF.h
@@ -11,9 +11,9 @@
 
 @interface UIImage (GIF)
 
-+ (UIImage *)animatedGIFNamed:(NSString *)name;
-+ (UIImage *)animatedGIFWithData:(NSData *)data;
++ (UIImage *)sd_animatedGIFNamed:(NSString *)name;
++ (UIImage *)sd_animatedGIFWithData:(NSData *)data;
 
-- (UIImage *)animatedImageByScalingAndCroppingToSize:(CGSize)size;
+- (UIImage *)sd_animatedImageByScalingAndCroppingToSize:(CGSize)size;
 
 @end
diff --git a/SDWebImage/UIImage+GIF.m b/SDWebImage/UIImage+GIF.m
index 8a0cc61d..fd1d8e43 100755
--- a/SDWebImage/UIImage+GIF.m
+++ b/SDWebImage/UIImage+GIF.m
@@ -11,7 +11,7 @@
 
 @implementation UIImage (GIF)
 
-+ (UIImage *)animatedGIFWithData:(NSData *)data
++ (UIImage *)sd_animatedGIFWithData:(NSData *)data
 {
     if (!data)
     {
@@ -47,7 +47,7 @@
     return [UIImage animatedImageWithImages:images duration:duration];
 }
 
-+ (UIImage *)animatedGIFNamed:(NSString *)name
++ (UIImage *)sd_animatedGIFNamed:(NSString *)name
 {
     CGFloat scale = [UIScreen mainScreen].scale;
     
@@ -59,7 +59,7 @@
         
         if (data)
         {
-            return [UIImage animatedGIFWithData:data];
+            return [UIImage sd_animatedGIFWithData:data];
         }
         
         NSString *path = [[NSBundle mainBundle] pathForResource:name ofType:@"gif"];
@@ -68,7 +68,7 @@
         
         if (data)
         {
-            return [UIImage animatedGIFWithData:data];
+            return [UIImage sd_animatedGIFWithData:data];
         }
         
         return [UIImage imageNamed:name];
@@ -81,14 +81,14 @@
         
         if (data)
         {
-            return [UIImage animatedGIFWithData:data];
+            return [UIImage sd_animatedGIFWithData:data];
         }
         
         return [UIImage imageNamed:name];
     }    
 }
 
-- (UIImage *)animatedImageByScalingAndCroppingToSize:(CGSize)size
+- (UIImage *)sd_animatedImageByScalingAndCroppingToSize:(CGSize)size
 {
     if (CGSizeEqualToSize(self.size, size) || CGSizeEqualToSize(size, CGSizeZero))
     {