diff --git a/src/main/java/io/wcm/handler/mediasource/ngdm/impl/NextGenDynamicMediaImageUrlBuilder.java b/src/main/java/io/wcm/handler/mediasource/ngdm/impl/NextGenDynamicMediaImageUrlBuilder.java
index 185e38d7..dd5ca5fb 100644
--- a/src/main/java/io/wcm/handler/mediasource/ngdm/impl/NextGenDynamicMediaImageUrlBuilder.java
+++ b/src/main/java/io/wcm/handler/mediasource/ngdm/impl/NextGenDynamicMediaImageUrlBuilder.java
@@ -121,9 +121,9 @@ public NextGenDynamicMediaImageUrlBuilder(@NotNull NextGenDynamicMediaContext co
     SmartCrop namedSmartCrop = getMatchingNamedSmartCrop(metadata, cropSmartRatio);
     if (namedSmartCrop != null) {
       urlParamMap.put(PARAM_SMARTCROP, namedSmartCrop.getName());
-      boolean widthAndOrHeightDefined = applyWidthOrPlaceholder(params, urlParamMap) || applyHeightOrPlaceholder(params, urlParamMap);
-      if (!widthAndOrHeightDefined) {
-        // if no width given apply default width/height to not rely on dimensions defined in AEM image profile
+      boolean widthOrHeightDefined = applyWidthOrPlaceholder(params, urlParamMap) || applyHeightOrPlaceholder(params, urlParamMap);
+      if (!widthOrHeightDefined) {
+        // if no width or height given apply default width/height to not rely on dimensions defined in AEM image profile
         String imageWidthHeightDefault = Long.toString(context.getNextGenDynamicMediaConfig().getImageWidthHeightDefault());
         if (namedSmartCrop.getCropDimension().getWidth() >= namedSmartCrop.getCropDimension().getHeight()) {
           urlParamMap.put(PARAM_WIDTH, imageWidthHeightDefault);
@@ -144,8 +144,22 @@ else if (orginalDimension != null && cropSmartRatio != null && isAutoCroppingReq
     }
     else {
       // No cropping required or insufficient metadata available to detect cropping
-      applyWidthOrPlaceholder(params, urlParamMap);
-      applyHeightOrPlaceholder(params, urlParamMap);
+      boolean widthDefined = applyWidthOrPlaceholder(params, urlParamMap);
+      boolean heightDefined = applyHeightOrPlaceholder(params, urlParamMap);
+      if (!(widthDefined || heightDefined) && cropSmartRatio != null) {
+        // if no width or height given apply default width/height respecting the requested aspect ratio
+        double ratio = Ratio.get(cropSmartRatio);
+        long width = context.getNextGenDynamicMediaConfig().getImageWidthHeightDefault();
+        long height = context.getNextGenDynamicMediaConfig().getImageWidthHeightDefault();
+        if (ratio > 1) {
+          height = Math.round(width / ratio);
+        }
+        else if (ratio < 1) {
+          width = Math.round(height * ratio);
+        }
+        urlParamMap.put(PARAM_WIDTH, Long.toString(width));
+        urlParamMap.put(PARAM_HEIGHT, Long.toString(height));
+      }
     }
 
     if (rotation != null && rotation != 0) {
diff --git a/src/test/java/io/wcm/handler/media/impl/MediaHandlerImplImageFileTypesEnd2EndNextGenDynamicMediaLocalAssetTest.java b/src/test/java/io/wcm/handler/media/impl/MediaHandlerImplImageFileTypesEnd2EndNextGenDynamicMediaLocalAssetTest.java
index a92d3209..5d7269a5 100644
--- a/src/test/java/io/wcm/handler/media/impl/MediaHandlerImplImageFileTypesEnd2EndNextGenDynamicMediaLocalAssetTest.java
+++ b/src/test/java/io/wcm/handler/media/impl/MediaHandlerImplImageFileTypesEnd2EndNextGenDynamicMediaLocalAssetTest.java
@@ -75,7 +75,7 @@ void testAsset_JPEG_Original_ContentDisposition() {
   void testAsset_JPEG_Rescale() {
     Asset asset = createSampleAsset("/filetype/sample.jpg", ContentType.JPEG);
     buildAssertMedia_Rescale(asset, 80, 40,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=80%3A40%2Csmart&preferwebp=true&quality=85&width=80",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?height=40&preferwebp=true&quality=85&width=80",
         ContentType.JPEG);
   }
 
@@ -84,7 +84,7 @@ void testAsset_JPEG_Rescale() {
   void testAsset_JPEG_AutoCrop() {
     Asset asset = createSampleAsset("/filetype/sample.jpg", ContentType.JPEG);
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=1%3A1%2Csmart&preferwebp=true&quality=85",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=25%2C0%2C50%2C50&preferwebp=true&quality=85",
         ContentType.JPEG);
   }
 
@@ -93,7 +93,7 @@ void testAsset_JPEG_AutoCrop() {
   void testAsset_JPEG_AutoCrop_ImageQuality() {
     Asset asset = createSampleAsset("/filetype/sample.jpg", ContentType.JPEG);
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=1%3A1%2Csmart&preferwebp=true&quality=60",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=25%2C0%2C50%2C50&preferwebp=true&quality=60",
         ContentType.JPEG, 0.6d);
   }
 
@@ -103,7 +103,7 @@ void testAsset_JPEG_CropWithExplicitRendition() {
     Asset asset = createSampleAsset("/filetype/sample.jpg", ContentType.JPEG);
     context.create().assetRendition(asset, "square.jpg", 50, 50, ContentType.JPEG);
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=1%3A1%2Csmart&preferwebp=true&quality=85",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=25%2C0%2C50%2C50&preferwebp=true&quality=85",
         ContentType.JPEG);
   }
 
@@ -121,7 +121,7 @@ void testAsset_GIF_Original() {
   void testAsset_GIF_Rescale() {
     Asset asset = createSampleAsset("/filetype/sample.gif", ContentType.GIF);
     buildAssertMedia_Rescale(asset, 80, 40,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.gif?crop=80%3A40%2Csmart&preferwebp=true&quality=85&width=80",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.gif?height=40&preferwebp=true&quality=85&width=80",
         ContentType.JPEG);
   }
 
@@ -130,7 +130,7 @@ void testAsset_GIF_Rescale() {
   void testAsset_GIF_AutoCrop() {
     Asset asset = createSampleAsset("/filetype/sample.gif", ContentType.GIF);
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.gif?crop=1%3A1%2Csmart&preferwebp=true&quality=85",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.gif?crop=25%2C0%2C50%2C50&preferwebp=true&quality=85",
         ContentType.JPEG);
   }
 
@@ -148,7 +148,7 @@ void testAsset_PNG_Original() {
   void testAsset_PNG_Rescale() {
     Asset asset = createSampleAsset("/filetype/sample.png", ContentType.PNG);
     buildAssertMedia_Rescale(asset, 80, 40,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.png?crop=80%3A40%2Csmart&preferwebp=true&quality=85&width=80",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.png?height=40&preferwebp=true&quality=85&width=80",
         ContentType.PNG);
   }
 
@@ -157,7 +157,7 @@ void testAsset_PNG_Rescale() {
   void testAsset_PNG_AutoCrop() {
     Asset asset = createSampleAsset("/filetype/sample.png", ContentType.PNG);
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.png?crop=1%3A1%2Csmart&preferwebp=true&quality=85",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.png?crop=25%2C0%2C50%2C50&preferwebp=true&quality=85",
         ContentType.PNG);
   }
 
@@ -184,7 +184,7 @@ void testAsset_TIFF_Original_ContentDisposition() {
   void testAsset_TIFF_Rescale() {
     Asset asset = createSampleAsset("/filetype/sample.tif", ContentType.TIFF);
     buildAssertMedia_Rescale(asset, 80, 40,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=80%3A40%2Csmart&preferwebp=true&quality=85&width=80",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?height=40&preferwebp=true&quality=85&width=80",
         ContentType.JPEG);
   }
 
@@ -193,7 +193,7 @@ void testAsset_TIFF_Rescale() {
   void testAsset_TIFF_AutoCrop() {
     Asset asset = createSampleAsset("/filetype/sample.tif", ContentType.TIFF);
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=1%3A1%2Csmart&preferwebp=true&quality=85",
+        "https://localrepo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/sample.jpg?crop=25%2C0%2C50%2C50&preferwebp=true&quality=85",
         ContentType.JPEG);
   }
 
diff --git a/src/test/java/io/wcm/handler/media/impl/MediaHandlerImplImageFileTypesEnd2EndNextGenDynamicMediaTest.java b/src/test/java/io/wcm/handler/media/impl/MediaHandlerImplImageFileTypesEnd2EndNextGenDynamicMediaTest.java
index c0f5e9ef..d66a6e08 100644
--- a/src/test/java/io/wcm/handler/media/impl/MediaHandlerImplImageFileTypesEnd2EndNextGenDynamicMediaTest.java
+++ b/src/test/java/io/wcm/handler/media/impl/MediaHandlerImplImageFileTypesEnd2EndNextGenDynamicMediaTest.java
@@ -78,7 +78,7 @@ void testAsset_JPEG_Original_ContentDisposition() {
   void testAsset_JPEG_Rescale() {
     Asset asset = createNextGenDynamicMediaReferenceAsAsset("sample.jpg");
     buildAssertMedia_Rescale(asset, 80, 40,
-        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?crop=80%3A40%2Csmart&preferwebp=true&quality=85&width=80",
+        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?height=40&preferwebp=true&quality=85&width=80",
         ContentType.JPEG);
   }
 
@@ -87,7 +87,7 @@ void testAsset_JPEG_Rescale() {
   void testAsset_JPEG_AutoCrop() {
     Asset asset = createNextGenDynamicMediaReferenceAsAsset("sample.jpg");
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?crop=1%3A1%2Csmart&preferwebp=true&quality=85",
+        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?height=2048&preferwebp=true&quality=85&width=2048",
         ContentType.JPEG);
   }
 
@@ -96,7 +96,7 @@ void testAsset_JPEG_AutoCrop() {
   void testAsset_JPEG_AutoCrop_ImageQuality() {
     Asset asset = createNextGenDynamicMediaReferenceAsAsset("sample.jpg");
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?crop=1%3A1%2Csmart&preferwebp=true&quality=60",
+        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?height=2048&preferwebp=true&quality=60&width=2048",
         ContentType.JPEG, 0.6d);
   }
 
@@ -121,7 +121,7 @@ void testAsset_GIF_Original() {
   void testAsset_GIF_Rescale() {
     Asset asset = createNextGenDynamicMediaReferenceAsAsset("sample.gif");
     buildAssertMedia_Rescale(asset, 80, 40,
-        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.gif?crop=80%3A40%2Csmart&preferwebp=true&quality=85&width=80",
+        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.gif?height=40&preferwebp=true&quality=85&width=80",
         ContentType.GIF);
   }
 
@@ -130,7 +130,7 @@ void testAsset_GIF_Rescale() {
   void testAsset_GIF_AutoCrop() {
     Asset asset = createNextGenDynamicMediaReferenceAsAsset("sample.gif");
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.gif?crop=1%3A1%2Csmart&preferwebp=true&quality=85",
+        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.gif?height=2048&preferwebp=true&quality=85&width=2048",
         ContentType.GIF);
   }
 
@@ -148,7 +148,7 @@ void testAsset_PNG_Original() {
   void testAsset_PNG_Rescale() {
     Asset asset = createNextGenDynamicMediaReferenceAsAsset("sample.png");
     buildAssertMedia_Rescale(asset, 80, 40,
-        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.png?crop=80%3A40%2Csmart&preferwebp=true&quality=85&width=80",
+        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.png?height=40&preferwebp=true&quality=85&width=80",
         ContentType.PNG);
   }
 
@@ -157,7 +157,7 @@ void testAsset_PNG_Rescale() {
   void testAsset_PNG_AutoCrop() {
     Asset asset = createNextGenDynamicMediaReferenceAsAsset("sample.png");
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.png?crop=1%3A1%2Csmart&preferwebp=true&quality=85",
+        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.png?height=2048&preferwebp=true&quality=85&width=2048",
         ContentType.PNG);
   }
 
@@ -184,7 +184,7 @@ void testAsset_TIFF_Original_ContentDisposition() {
   void testAsset_TIFF_Rescale() {
     Asset asset = createNextGenDynamicMediaReferenceAsAsset("sample.tif");
     buildAssertMedia_Rescale(asset, 80, 40,
-        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?crop=80%3A40%2Csmart&preferwebp=true&quality=85&width=80",
+        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?height=40&preferwebp=true&quality=85&width=80",
         ContentType.JPEG);
   }
 
@@ -193,7 +193,7 @@ void testAsset_TIFF_Rescale() {
   void testAsset_TIFF_AutoCrop() {
     Asset asset = createNextGenDynamicMediaReferenceAsAsset("sample.tif");
     buildAssertMedia_AutoCrop(asset, 50, 50,
-        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?crop=1%3A1%2Csmart&preferwebp=true&quality=85",
+        "https://repo1/adobe/assets/" + SAMPLE_ASSET_ID + "/as/sample.jpg?height=2048&preferwebp=true&quality=85&width=2048",
         ContentType.JPEG);
   }
 
diff --git a/src/test/java/io/wcm/handler/mediasource/ngdm/impl/NextGenDynamicMediaImageUrlBuilderTest.java b/src/test/java/io/wcm/handler/mediasource/ngdm/impl/NextGenDynamicMediaImageUrlBuilderTest.java
index 9c3ee428..dd60b5ba 100644
--- a/src/test/java/io/wcm/handler/mediasource/ngdm/impl/NextGenDynamicMediaImageUrlBuilderTest.java
+++ b/src/test/java/io/wcm/handler/mediasource/ngdm/impl/NextGenDynamicMediaImageUrlBuilderTest.java
@@ -94,6 +94,45 @@ void testAllParams() {
         underTest.build(params));
   }
 
+  @Test
+  void testOnlyRatio_16_9() {
+    NextGenDynamicMediaImageUrlBuilder underTest = getBuilder();
+    NextGenDynamicMediaImageDeliveryParams params = new NextGenDynamicMediaImageDeliveryParams()
+        .cropSmartRatio(new Dimension(16, 9))
+        .rotation(90)
+        .quality(60);
+
+    assertEquals("https://repo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/my-image.jpg"
+        + "?height=1152&preferwebp=true&quality=60&rotate=90&width=2048",
+        underTest.build(params));
+  }
+
+  @Test
+  void testOnlyRatio_1_2() {
+    NextGenDynamicMediaImageUrlBuilder underTest = getBuilder();
+    NextGenDynamicMediaImageDeliveryParams params = new NextGenDynamicMediaImageDeliveryParams()
+        .cropSmartRatio(new Dimension(1, 2))
+        .rotation(90)
+        .quality(60);
+
+    assertEquals("https://repo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/my-image.jpg"
+        + "?height=2048&preferwebp=true&quality=60&rotate=90&width=1024",
+        underTest.build(params));
+  }
+
+  @Test
+  void testOnlyRatio_1_1() {
+    NextGenDynamicMediaImageUrlBuilder underTest = getBuilder();
+    NextGenDynamicMediaImageDeliveryParams params = new NextGenDynamicMediaImageDeliveryParams()
+        .cropSmartRatio(new Dimension(1, 1))
+        .rotation(90)
+        .quality(60);
+
+    assertEquals("https://repo1/adobe/assets/urn:aaid:aem:12345678-abcd-abcd-abcd-abcd12345678/as/my-image.jpg"
+        + "?height=2048&preferwebp=true&quality=60&rotate=90&width=2048",
+        underTest.build(params));
+  }
+
   @Test
   void testAllParams_NamedSmartCrop() throws Exception {
     NextGenDynamicMediaMetadata metadata = NextGenDynamicMediaMetadata.fromJson(METADATA_JSON_IMAGE);