diff --git a/SDWebImage/SDAnimatedImage.m b/SDWebImage/SDAnimatedImage.m
index 9fbd13e3..7d9ed01a 100644
--- a/SDWebImage/SDAnimatedImage.m
+++ b/SDWebImage/SDAnimatedImage.m
@@ -146,17 +146,14 @@ static CGFloat SDImageScaleFromPath(NSString *string) {
     if (!animatedCoder) {
         return nil;
     }
-    if (scale <= 0) {
-        scale = 1;
-    }
     UIImage *image = [animatedCoder animatedImageFrameAtIndex:0];
     if (!image) {
         return nil;
     }
 #if SD_MAC
-    self = [super initWithCGImage:image.CGImage scale:scale orientation:kCGImagePropertyOrientationUp];
+    self = [super initWithCGImage:image.CGImage scale:MAX(scale, 1) orientation:kCGImagePropertyOrientationUp];
 #else
-    self = [super initWithCGImage:image.CGImage scale:scale orientation:image.imageOrientation];
+    self = [super initWithCGImage:image.CGImage scale:MAX(scale, 1) orientation:image.imageOrientation];
 #endif
     if (self) {
         _coder = animatedCoder;
diff --git a/SDWebImage/SDImageAPNGCoder.m b/SDWebImage/SDImageAPNGCoder.m
index 09b49f72..d816bcc2 100644
--- a/SDWebImage/SDImageAPNGCoder.m
+++ b/SDWebImage/SDImageAPNGCoder.m
@@ -83,10 +83,7 @@ const CFStringRef kCGImagePropertyAPNGUnclampedDelayTime = (__bridge CFStringRef
     CGFloat scale = 1;
     NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
     if (scaleFactor != nil) {
-        scale = [scaleFactor doubleValue];
-        if (scale < 1) {
-            scale = 1;
-        }
+        scale = MAX([scaleFactor doubleValue], 1);
     }
     
 #if SD_MAC
@@ -252,10 +249,7 @@ const CFStringRef kCGImagePropertyAPNGUnclampedDelayTime = (__bridge CFStringRef
         CGFloat scale = 1;
         NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
         if (scaleFactor != nil) {
-            scale = [scaleFactor doubleValue];
-            if (scale < 1) {
-                scale = 1;
-            }
+            scale = MAX([scaleFactor doubleValue], 1);
         }
         _scale = scale;
 #if SD_UIKIT
@@ -304,10 +298,7 @@ const CFStringRef kCGImagePropertyAPNGUnclampedDelayTime = (__bridge CFStringRef
             CGFloat scale = _scale;
             NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
             if (scaleFactor != nil) {
-                scale = [scaleFactor doubleValue];
-                if (scale < 1) {
-                    scale = 1;
-                }
+                scale = MAX([scaleFactor doubleValue], 1);
             }
 #if SD_UIKIT || SD_WATCH
             image = [[UIImage alloc] initWithCGImage:partialImageRef scale:scale orientation:UIImageOrientationUp];
@@ -341,10 +332,7 @@ const CFStringRef kCGImagePropertyAPNGUnclampedDelayTime = (__bridge CFStringRef
         CGFloat scale = 1;
         NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
         if (scaleFactor != nil) {
-            scale = [scaleFactor doubleValue];
-            if (scale < 1) {
-                scale = 1;
-            }
+            scale = MAX([scaleFactor doubleValue], 1);
         }
         _scale = scale;
         _imageSource = imageSource;
diff --git a/SDWebImage/SDImageCacheDefine.m b/SDWebImage/SDImageCacheDefine.m
index 423e0583..255b860e 100644
--- a/SDWebImage/SDImageCacheDefine.m
+++ b/SDWebImage/SDImageCacheDefine.m
@@ -17,9 +17,6 @@ UIImage * _Nullable SDImageCacheDecodeImageData(NSData * _Nonnull imageData, NSS
     BOOL decodeFirstFrame = options & SDWebImageDecodeFirstFrameOnly;
     NSNumber *scaleValue = context[SDWebImageContextImageScaleFactor];
     CGFloat scale = scaleValue.doubleValue >= 1 ? scaleValue.doubleValue : SDImageScaleFactorForKey(cacheKey);
-    if (scale < 1) {
-        scale = 1;
-    }
     SDImageCoderOptions *coderOptions = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)};
     if (context) {
         SDImageCoderMutableOptions *mutableCoderOptions = [coderOptions mutableCopy];
diff --git a/SDWebImage/SDImageCoderHelper.m b/SDWebImage/SDImageCoderHelper.m
index 99e523d5..b8ac0f77 100644
--- a/SDWebImage/SDImageCoderHelper.m
+++ b/SDWebImage/SDImageCoderHelper.m
@@ -104,10 +104,8 @@ static const CGFloat kDestSeemOverlap = 2.0f;   // the numbers of pixels to over
         return nil;
     }
     CFRelease(imageDestination);
-    CGFloat scale = frames.firstObject.image.scale;
-    if (scale < 1) {
-        scale = 1;
-    }
+    CGFloat scale = MAX(frames.firstObject.image.scale, 1);
+    
     SDAnimatedImageRep *imageRep = [[SDAnimatedImageRep alloc] initWithData:imageData];
     NSSize size = NSMakeSize(imageRep.pixelsWide / scale, imageRep.pixelsHigh / scale);
     imageRep.size = size;
diff --git a/SDWebImage/SDImageGIFCoder.m b/SDWebImage/SDImageGIFCoder.m
index 2bea5b94..6668c20a 100644
--- a/SDWebImage/SDImageGIFCoder.m
+++ b/SDWebImage/SDImageGIFCoder.m
@@ -76,10 +76,7 @@
     CGFloat scale = 1;
     NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
     if (scaleFactor != nil) {
-        scale = [scaleFactor doubleValue];
-        if (scale < 1) {
-            scale = 1;
-        }
+        scale = MAX([scaleFactor doubleValue], 1);
     }
     
 #if SD_MAC
@@ -189,10 +186,7 @@
         CGFloat scale = 1;
         NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
         if (scaleFactor != nil) {
-            scale = [scaleFactor doubleValue];
-            if (scale < 1) {
-                scale = 1;
-            }
+            scale = MAX([scaleFactor doubleValue], 1);
         }
         _scale = scale;
 #if SD_UIKIT
@@ -241,10 +235,7 @@
             CGFloat scale = _scale;
             NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
             if (scaleFactor != nil) {
-                scale = [scaleFactor doubleValue];
-                if (scale < 1) {
-                    scale = 1;
-                }
+                scale = MAX([scaleFactor doubleValue], 1);
             }
 #if SD_UIKIT || SD_WATCH
             image = [[UIImage alloc] initWithCGImage:partialImageRef scale:scale orientation:UIImageOrientationUp];
@@ -339,10 +330,7 @@
         CGFloat scale = 1;
         NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
         if (scaleFactor != nil) {
-            scale = [scaleFactor doubleValue];
-            if (scale < 1) {
-                scale = 1;
-            }
+            scale = MAX([scaleFactor doubleValue], 1);
         }
         _scale = scale;
         _imageSource = imageSource;
diff --git a/SDWebImage/SDImageIOCoder.m b/SDWebImage/SDImageIOCoder.m
index 7d5d6bf4..54666696 100644
--- a/SDWebImage/SDImageIOCoder.m
+++ b/SDWebImage/SDImageIOCoder.m
@@ -70,10 +70,7 @@
     CGFloat scale = 1;
     NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
     if (scaleFactor != nil) {
-        scale = [scaleFactor doubleValue];
-        if (scale < 1) {
-            scale = 1;
-        }
+        scale = MAX([scaleFactor doubleValue], 1) ;
     }
     
     UIImage *image = [[UIImage alloc] initWithData:data scale:scale];
@@ -94,10 +91,7 @@
         CGFloat scale = 1;
         NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
         if (scaleFactor != nil) {
-            scale = [scaleFactor doubleValue];
-            if (scale < 1) {
-                scale = 1;
-            }
+            scale = MAX([scaleFactor doubleValue], 1);
         }
         _scale = scale;
 #if SD_UIKIT
@@ -151,10 +145,7 @@
             CGFloat scale = _scale;
             NSNumber *scaleFactor = options[SDImageCoderDecodeScaleFactor];
             if (scaleFactor != nil) {
-                scale = [scaleFactor doubleValue];
-                if (scale < 1) {
-                    scale = 1;
-                }
+                scale = MAX([scaleFactor doubleValue], 1);
             }
 #if SD_UIKIT || SD_WATCH
             UIImageOrientation imageOrientation = [SDImageCoderHelper imageOrientationFromEXIFOrientation:_orientation];
diff --git a/SDWebImage/SDImageLoader.m b/SDWebImage/SDImageLoader.m
index 7d3db1a9..cb1d8609 100644
--- a/SDWebImage/SDImageLoader.m
+++ b/SDWebImage/SDImageLoader.m
@@ -31,9 +31,6 @@ UIImage * _Nullable SDImageLoaderDecodeImageData(NSData * _Nonnull imageData, NS
     BOOL decodeFirstFrame = options & SDWebImageDecodeFirstFrameOnly;
     NSNumber *scaleValue = context[SDWebImageContextImageScaleFactor];
     CGFloat scale = scaleValue.doubleValue >= 1 ? scaleValue.doubleValue : SDImageScaleFactorForKey(cacheKey);
-    if (scale < 1) {
-        scale = 1;
-    }
     SDImageCoderOptions *coderOptions = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)};
     if (context) {
         SDImageCoderMutableOptions *mutableCoderOptions = [coderOptions mutableCopy];
@@ -93,9 +90,6 @@ UIImage * _Nullable SDImageLoaderDecodeProgressiveImageData(NSData * _Nonnull im
     BOOL decodeFirstFrame = options & SDWebImageDecodeFirstFrameOnly;
     NSNumber *scaleValue = context[SDWebImageContextImageScaleFactor];
     CGFloat scale = scaleValue.doubleValue >= 1 ? scaleValue.doubleValue : SDImageScaleFactorForKey(cacheKey);
-    if (scale < 1) {
-        scale = 1;
-    }
     SDImageCoderOptions *coderOptions = @{SDImageCoderDecodeFirstFrameOnly : @(decodeFirstFrame), SDImageCoderDecodeScaleFactor : @(scale)};
     if (context) {
         SDImageCoderMutableOptions *mutableCoderOptions = [coderOptions mutableCopy];
diff --git a/SDWebImage/UIImage+MultiFormat.m b/SDWebImage/UIImage+MultiFormat.m
index c70a3808..04d08c54 100644
--- a/SDWebImage/UIImage+MultiFormat.m
+++ b/SDWebImage/UIImage+MultiFormat.m
@@ -23,10 +23,7 @@
     if (!data) {
         return nil;
     }
-    if (scale < 1) {
-        scale = 1;
-    }
-    SDImageCoderOptions *options = @{SDImageCoderDecodeScaleFactor : @(scale), SDImageCoderDecodeFirstFrameOnly : @(firstFrameOnly)};
+    SDImageCoderOptions *options = @{SDImageCoderDecodeScaleFactor : @(MAX(scale, 1)), SDImageCoderDecodeFirstFrameOnly : @(firstFrameOnly)};
     return [[SDImageCodersManager sharedManager] decodedImageWithData:data options:options];
 }