diff --git a/spine-ts/player/example/generator/embedding-generator.html b/spine-ts/player/example/generator/embedding-generator.html
index 29e82c7d7..53a2d3a32 100644
--- a/spine-ts/player/example/generator/embedding-generator.html
+++ b/spine-ts/player/example/generator/embedding-generator.html
@@ -130,12 +130,32 @@ body {
 					<th>Fullscreen background color</th>
 					<td><input id="sp_generator_background_fullscreen" class="jscolor {onFineChange:'changeFullscreenBackgroundColor(this)'}'" value="000000"></td>
 				</tr>
-				<tr>
+				<tr style="vertical-align: top;">
 					<th>Background image</th>
 					<td>
 						<select id="sp_generator_background_image">
 						</select>
 					</td>
+					<td id="sp_generator_background_bounds" class="sp_generator_hidden">
+						<table>
+							<tr>
+								<th>X</th>
+								<td><input id="sp_generator_background_x"></td>
+							</tr>
+							<tr>
+								<th>Y</th>
+								<td><input id="sp_generator_background_y"></td>
+							</tr>
+							<tr>
+								<th>Width</th>
+								<td><input id="sp_generator_background_width"></td>
+							</tr>
+							<tr>
+								<th>Height</th>
+								<td><input id="sp_generator_background_height"></td>
+							</tr>
+						</table>
+					</td>
 				</tr>
 			</table>
 		</div>
diff --git a/spine-ts/player/example/generator/embedding-generator.js b/spine-ts/player/example/generator/embedding-generator.js
index 5f5d451cd..c64f24016 100644
--- a/spine-ts/player/example/generator/embedding-generator.js
+++ b/spine-ts/player/example/generator/embedding-generator.js
@@ -112,7 +112,10 @@ function setupPlayer(dataUrls, jsonFile, skelFile, atlasFile) {
 				atlasUrl: atlasFile,
 				rawDataURIs: dataUrls,
 				success: setupConfigUI,
-				alpha: true // needed so we can emulate shizzle
+				alpha: true, // needed so we can emulate shizzle
+				viewport: { // needed so we can see viewport bounds
+					debugRender: true
+				}
 			};
 
 			appState.player = new spine.SpinePlayer(player, config);
@@ -190,6 +193,12 @@ function setupConfigUI() {
 			appState.player.assetManager.loadTexture(imageUrl);
 		}
 
+		var boundsTable = document.getElementById("sp_generator_background_bounds");
+		if (imageUrl == "none")
+			boundsTable.classList.add("sp_generator_hidden");
+		else
+			boundsTable.classList.remove("sp_generator_hidden");
+
 		if (appState.player.config.backgroundImage) {
 			appState.player.config.backgroundImage.url = imageUrl != "none" ? imageUrl: null;
 		} else {
@@ -198,6 +207,32 @@ function setupConfigUI() {
 			}
 		}
 	}
+	var backgroundX = document.getElementById("sp_generator_background_x");
+	backgroundX.onkeyup = backgroundX.onchange = function () {
+		var value = Number.parseFloat(backgroundX.value);
+		if (Number.isNaN(value)) return;
+		appState.player.config.backgroundImage.x = value;
+	};
+
+	var backgroundY = document.getElementById("sp_generator_background_y");
+	backgroundY.onkeyup = backgroundY.onchange = function () {
+		var value = Number.parseFloat(backgroundY.value);
+		if (Number.isNaN(value)) return;
+		appState.player.config.backgroundImage.y = value;
+	};
+	var backgroundWidth = document.getElementById("sp_generator_background_width");
+	backgroundWidth.onkeyup = backgroundWidth.onchange = function () {
+		var value = Number.parseFloat(backgroundWidth.value);
+		if (Number.isNaN(value)) return;
+		appState.player.config.backgroundImage.width = value;
+	};
+	var backgroundHeight = document.getElementById("sp_generator_background_height");
+	backgroundHeight.onkeyup = backgroundHeight.onchange = function () {
+		var value = Number.parseFloat(backgroundHeight.value);
+		if (Number.isNaN(value)) return;
+		appState.player.config.backgroundImage.height = value;
+	};
+
 
 	// Fill animations tab