diff --git a/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPDataResponse.h b/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPDataResponse.h
index 66c5e40..2eb4656 100755
--- a/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPDataResponse.h
+++ b/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPDataResponse.h
@@ -6,8 +6,10 @@
 {
 	NSUInteger offset;
 	NSData *data;
+    NSString *contentType;
 }
 
-- (id)initWithData:(NSData *)data;
+- (id)initWithData:(NSData *)dataParam;
+- (id)initWithData:(NSData *)dataParam contentType:(NSString *)contentTypeParam;
 
 @end
diff --git a/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPDataResponse.m b/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPDataResponse.m
index 6525e37..a4f0aac 100755
--- a/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPDataResponse.m
+++ b/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPDataResponse.m
@@ -12,16 +12,34 @@
 
 @implementation HTTPDataResponse
 
+- (NSDictionary *)httpHeaders {
+
+    if(contentType) {
+        return [NSDictionary dictionaryWithObject:contentType forKey:@"Content-Type"];
+    }
+    
+    return [NSDictionary new];
+}
+
+
 - (id)initWithData:(NSData *)dataParam
 {
-	if((self = [super init]))
+    return [self initWithData:dataParam contentType:nil];
+}
+
+- (id)initWithData:(NSData *)dataParam contentType:(NSString *)contentTypeParam
+{
+    if((self = [super init]))
 	{
 		HTTPLogTrace();
 		
 		offset = 0;
 		data = dataParam;
+        contentType = contentTypeParam;
 	}
+    
 	return self;
+
 }
 
 - (void)dealloc
diff --git a/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPFileResponse.m b/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPFileResponse.m
index cf73cd2..a3d7fd6 100755
--- a/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPFileResponse.m
+++ b/LauncherOSX/CocoaHTTPServer/Core/Responses/HTTPFileResponse.m
@@ -18,6 +18,15 @@
 
 @implementation HTTPFileResponse
 
+- (NSDictionary *)httpHeaders {
+    //HTTPLogTrace();
+    if ([[[filePath pathExtension] lowercaseString] isEqualToString:@"svg"]) {
+        return [NSDictionary dictionaryWithObject:@"image/svg+xml" forKey:@"Content-Type"];
+    }
+    return [NSDictionary new];
+}
+
+
 - (id)initWithFilePath:(NSString *)fpath forConnection:(HTTPConnection *)parent
 {
 	if((self = [super init]))
diff --git a/LauncherOSX/PackageResourceServer.mm b/LauncherOSX/PackageResourceServer.mm
index b43c2e1..d59043f 100644
--- a/LauncherOSX/PackageResourceServer.mm
+++ b/LauncherOSX/PackageResourceServer.mm
@@ -50,6 +50,14 @@ @implementation PackageResourceConnection
     @synchronized ([PackageResourceServer resourceLock]) {
         RDPackageResource *resource = [m_package resourceAtRelativePath:path];
 
+        NSString* ext = [[path pathExtension] lowercaseString];
+        NSString* contentType = nil;
+        
+        if([ext isEqualToString:@"svg"]) {
+            contentType = @"image/svg+xml";
+        }
+        
+        
         if (resource == nil) {
             NSLog(@"No resource found! (%@)", path);
         }
@@ -61,7 +69,7 @@ @implementation PackageResourceConnection
             NSData *data = resource.data;
 
             if (data != nil) {
-                return [[HTTPDataResponse alloc] initWithData:data];
+                return [[HTTPDataResponse alloc] initWithData:data contentType:contentType];
             }
         }
         else {
@@ -82,6 +90,20 @@ + (void)setPackage:(LOXPackage *)package {
 
 @implementation PackageResourceResponse
 
+- (NSDictionary *)httpHeaders {
+    
+    if(m_resource.relativePath) {
+    
+        NSString* ext = [[m_resource.relativePath pathExtension] lowercaseString];
+        
+        if([ext isEqualToString:@"svg"]) {
+            return [NSDictionary dictionaryWithObject:@"image/svg+xml" forKey:@"Content-Type"];
+        }
+        
+    }
+    
+    return [NSDictionary new];
+}
 
 - (UInt64)contentLength {
     return m_resource.bytesCount;
diff --git a/LauncherOSX/RDPackageResource.h b/LauncherOSX/RDPackageResource.h
index 22f3dae..b91508a 100644
--- a/LauncherOSX/RDPackageResource.h
+++ b/LauncherOSX/RDPackageResource.h
@@ -18,6 +18,7 @@
 @interface RDPackageResource : NSObject {
 @private LOXPackage *m_package;
 @private NSData *m_data;
+
 }
 
 //@property (nonatomic, readonly) ePub3::ByteStream* byteStream;
diff --git a/readium-shared-js b/readium-shared-js
index d4ec27c..a449c30 160000
--- a/readium-shared-js
+++ b/readium-shared-js
@@ -1 +1 @@
-Subproject commit d4ec27cc24be799d0cb42fa431384965a126f68d
+Subproject commit a449c300abb857cd4147ece6cea4d8bde6899e22