diff --git a/SDWebImage/Core/SDWebImageDefine.h b/SDWebImage/Core/SDWebImageDefine.h
index bd4d4e68..568de147 100644
--- a/SDWebImage/Core/SDWebImageDefine.h
+++ b/SDWebImage/Core/SDWebImageDefine.h
@@ -195,6 +195,12 @@ typedef NS_OPTIONS(NSUInteger, SDWebImageOptions) {
      * Note if you use this when using the custom cache serializer, or using the transformer, we will also wait until the output image data written is finished.
      */
     SDWebImageWaitStoreCache = 1 << 22,
+    
+    /**
+     * We usually don't apply transform on vector images, because vector images supports dynamically changing to any size, rasterize to a fixed size will loss details. To modify vector images, you can process the vector data at runtime (such as modifying PDF tag / SVG element).
+     * Use this flag to transform them anyway.
+     */
+    SDWebImageTransformVectorImage = 1 << 23,
 };
 
 
diff --git a/SDWebImage/Core/SDWebImageManager.m b/SDWebImage/Core/SDWebImageManager.m
index 97ffb488..4fcb0ab1 100644
--- a/SDWebImage/Core/SDWebImageManager.m
+++ b/SDWebImage/Core/SDWebImageManager.m
@@ -332,7 +332,9 @@ static id<SDImageLoader> _defaultImageLoader;
     id<SDImageTransformer> transformer = context[SDWebImageContextImageTransformer];
     id<SDWebImageCacheSerializer> cacheSerializer = context[SDWebImageContextCacheSerializer];
     
-    BOOL shouldTransformImage = downloadedImage && (!downloadedImage.sd_isAnimated || (options & SDWebImageTransformAnimatedImage)) && transformer;
+    BOOL shouldTransformImage = downloadedImage && transformer;
+    shouldTransformImage = shouldTransformImage && (!downloadedImage.sd_isAnimated || (options & SDWebImageTransformAnimatedImage));
+    shouldTransformImage = shouldTransformImage && (!downloadedImage.sd_isVector || (options & SDWebImageTransformVectorImage));
     BOOL shouldCacheOriginal = downloadedImage && finished;
     BOOL waitStoreCache = SD_OPTIONS_CONTAINS(options, SDWebImageWaitStoreCache);
     
@@ -380,7 +382,9 @@ static id<SDImageLoader> _defaultImageLoader;
     NSString *key = [self cacheKeyForURL:url context:context];
     id<SDImageTransformer> transformer = context[SDWebImageContextImageTransformer];
     id<SDWebImageCacheSerializer> cacheSerializer = context[SDWebImageContextCacheSerializer];
-    BOOL shouldTransformImage = originalImage && (!originalImage.sd_isAnimated || (options & SDWebImageTransformAnimatedImage)) && transformer;
+    BOOL shouldTransformImage = originalImage && transformer;
+    shouldTransformImage = shouldTransformImage && (!originalImage.sd_isAnimated || (options & SDWebImageTransformAnimatedImage));
+    shouldTransformImage = shouldTransformImage && (!originalImage.sd_isVector || (options & SDWebImageTransformVectorImage));
     BOOL waitStoreCache = SD_OPTIONS_CONTAINS(options, SDWebImageWaitStoreCache);
     // if available, store transformed image to cache
     if (shouldTransformImage) {