diff --git a/src/osgPlugins/osgjs/Animation.cpp b/src/osgPlugins/osgjs/Animation.cpp
index c9bd1382f..37fe74e48 100644
--- a/src/osgPlugins/osgjs/Animation.cpp
+++ b/src/osgPlugins/osgjs/Animation.cpp
@@ -240,6 +240,16 @@ static void addJSONChannel(osgAnimation::Channel* channel, JSONObject& anim, Wri
         }
     }
 
+#ifdef USE_COMPRESSED_CHANNELS
+    {
+        osgAnimation::Vec3usLinearChannel* c = dynamic_cast<osgAnimation::Vec3usLinearChannel*>(channel);
+        if (c) {
+            if (addJSONChannel<osgAnimation::Vec3usLinearChannel>("osgAnimation.Vec3LerpChannelCompressed", c, true, anim, writer, parent))
+                return;
+        }
+    }
+#endif
+
     {
         osgAnimation::QuatSphericalLinearChannel* c = dynamic_cast<osgAnimation::QuatSphericalLinearChannel*>(channel);
         if (c) {
@@ -248,6 +258,16 @@ static void addJSONChannel(osgAnimation::Channel* channel, JSONObject& anim, Wri
         }
     }
 
+#ifdef USE_COMPRESSED_CHANNELS
+    {
+        osgAnimation::Vec3usSphericalLinearChannel* c = dynamic_cast<osgAnimation::Vec3usSphericalLinearChannel*>(channel);
+        if (c) {
+            if (addJSONChannel<osgAnimation::Vec3usSphericalLinearChannel>("osgAnimation.QuatSlerpChannelCompressed", c, true, anim, writer, parent))
+                return;
+        }
+    }
+#endif
+
     {
         osgAnimation::FloatCubicBezierChannel* c = dynamic_cast<osgAnimation::FloatCubicBezierChannel*>(channel);
         if (c) {
diff --git a/src/osgPlugins/osgjs/CMakeLists.txt b/src/osgPlugins/osgjs/CMakeLists.txt
index 615ed46bf..980f644b9 100644
--- a/src/osgPlugins/osgjs/CMakeLists.txt
+++ b/src/osgPlugins/osgjs/CMakeLists.txt
@@ -16,6 +16,9 @@ SET(TARGET_H
     WriteVisitor
 )
 
+IF($ENV{SKETCHFAB_BUILD})
+    ADD_DEFINITIONS(-DUSE_COMPRESSED_CHANNELS)
+ENDIF()
 
 #### end var setup  ###
 SET(TARGET_ADDED_LIBRARIES