diff --git a/spine-ts/spine-core/src/AssetManagerBase.ts b/spine-ts/spine-core/src/AssetManagerBase.ts
index 28f066946..946a10aae 100644
--- a/spine-ts/spine-core/src/AssetManagerBase.ts
+++ b/spine-ts/spine-core/src/AssetManagerBase.ts
@@ -411,18 +411,21 @@ export class Downloader {
 
 	downloadText (url: string, success: (data: string) => void, error: (status: number, responseText: string) => void) {
 		if (this.start(url, success, error)) return;
-		if (this.rawDataUris[url]) {
+
+		const rawDataUri = this.rawDataUris[url];
+		// we assume if a "." is included in a raw data uri, it is used to rewrite an asset URL
+		if (rawDataUri && !rawDataUri.includes(".")) {
 			try {
-				let dataUri = this.rawDataUris[url];
-				this.finish(url, 200, this.dataUriToString(dataUri));
+				this.finish(url, 200, this.dataUriToString(rawDataUri));
 			} catch (e) {
 				this.finish(url, 400, JSON.stringify(e));
 			}
 			return;
 		}
+
 		let request = new XMLHttpRequest();
 		request.overrideMimeType("text/html");
-		request.open("GET", url, true);
+		request.open("GET", rawDataUri ? rawDataUri : url, true);
 		let done = () => {
 			this.finish(url, request.status, request.responseText);
 		};
@@ -439,17 +442,20 @@ export class Downloader {
 
 	downloadBinary (url: string, success: (data: Uint8Array) => void, error: (status: number, responseText: string) => void) {
 		if (this.start(url, success, error)) return;
-		if (this.rawDataUris[url]) {
+
+		const rawDataUri = this.rawDataUris[url];
+		// we assume if a "." is included in a raw data uri, it is used to rewrite an asset URL
+		if (rawDataUri && !rawDataUri.includes(".")) {
 			try {
-				let dataUri = this.rawDataUris[url];
-				this.finish(url, 200, this.dataUriToUint8Array(dataUri));
+				this.finish(url, 200, this.dataUriToUint8Array(rawDataUri));
 			} catch (e) {
 				this.finish(url, 400, JSON.stringify(e));
 			}
 			return;
 		}
+
 		let request = new XMLHttpRequest();
-		request.open("GET", url, true);
+		request.open("GET", rawDataUri ? rawDataUri : url, true);
 		request.responseType = "arraybuffer";
 		let onerror = () => {
 			this.finish(url, request.status, request.response);
diff --git a/spine-ts/spine-webgl/example/webcomponent-tutorial.html b/spine-ts/spine-webgl/example/webcomponent-tutorial.html
index febe5f362..9d76b0be1 100644
--- a/spine-ts/spine-webgl/example/webcomponent-tutorial.html
+++ b/spine-ts/spine-webgl/example/webcomponent-tutorial.html
@@ -1021,7 +1021,56 @@
     /////////////////////
     -->
 
+    <!--
+    /////////////////////
+    // start section //
+    /////////////////////
+    -->
 
+    <div class="section vertical-split">
+
+        <div class="split-top split">
+            <div class="split-left">
+                If you want to embed your assets within the page, you can inline them using their base64 version. Use a stringified json object containing as keys the assets name and as values their base64 version.
+            </div>
+            <div class="split-right">
+                <spine-widget
+                    atlas="inline.atlas"
+                    skeleton="inline.skel"
+                    animation="animation"
+                    raw-data='{
+                        "inline.atlas":"aW5saW5lLnBuZwpzaXplOjE2LDE2CmZpbHRlcjpMaW5lYXIsTGluZWFyCnBtYTp0cnVlCmRvdApib3VuZHM6MCwwLDEsMQo=",
+                        "inline.skel":"/B8S/IqaXgYHNC4yLjM5wkgAAMJIAABCyAAAQsgAAELIAAAAAQRkb3QCBXJvb3QAAAAAAAAAAAAAAAA/gAAAP4AAAAAAAAAAAAAAAAAAAAAABGRvdAAAAAAAAAAAAAAAAABCyAAAQsgAAAAAAAAAAAAAAAAAAAAAAQRkb3QB//////////8BAAAAAAABAAEBACWwfdcAAAAAP4AAAD+AAAA/gAAAP4AAAAAAAQphbmltYXRpb24BAQABAQMAAAAAAP////8/gAAA/wAA/wBAAAAA/////wAAAAAAAAAAAA==",
+                        "inline.png":"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRF////p8QbyAAAAApJREFUeJxjZAAAAAQAAiFkrWoAAAAASUVORK5CYII="
+                    }'
+                ></spine-widget>
+            </div>
+        </div>
+
+        <div class="split-bottom">
+            <pre><code id="code-display">
+                <script>escapeHTMLandInject(`
+<spine-widget
+    atlas="assets/inline.atlas"
+    skeleton="assets/inline.skel"
+    animation="animation"
+    raw-data='{
+        "assets/inline.atlas":"aW5saW5lLnBuZwpzaXplOjE2LDE2CmZpbHRlcjpMaW5lYXIsTGluZWFyCnBtYTp0cnVlCmRvdApib3VuZHM6MCwwLDEsMQo=",
+        "assets/inline.skel":"/B8S/IqaXgYHNC4yLjM5wkgAAMJIAABCyAAAQsgAAELIAAAAAQRkb3QCBXJvb3QAAAAAAAAAAAAAAAA/gAAAP4AAAAAAAAAAAAAAAAAAAAAABGRvdAAAAAAAAAAAAAAAAABCyAAAQsgAAAAAAAAAAAAAAAAAAAAAAQRkb3QB//////////8BAAAAAAABAAEBACWwfdcAAAAAP4AAAD+AAAA/gAAAP4AAAAAAAQphbmltYXRpb24BAQABAQMAAAAAAP////8/gAAA/wAA/wBAAAAA/////wAAAAAAAAAAAA==",
+        "assets/inline.png":"iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAAXNSR0IB2cksfwAAAAlwSFlzAAALEwAACxMBAJqcGAAAAANQTFRF////p8QbyAAAAApJREFUeJxjZAAAAAQAAiFkrWoAAAAASUVORK5CYII="
+    }'
+></spine-widget>`
+);</script>
+            </code></pre>
+        </div>
+
+    </div>
+
+    <!--
+    /////////////////////
+    // end section //
+    /////////////////////
+    -->
 
     <!--
     /////////////////////
diff --git a/spine-ts/spine-webgl/src/SpineWebComponentWidget.ts b/spine-ts/spine-webgl/src/SpineWebComponentWidget.ts
index 26881420d..de4c36398 100644
--- a/spine-ts/spine-webgl/src/SpineWebComponentWidget.ts
+++ b/spine-ts/spine-webgl/src/SpineWebComponentWidget.ts
@@ -158,7 +158,7 @@ function castToAnimationsInfo (value: string | null): AnimationsInfo | undefined
 	}, {} as AnimationsInfo);
 }
 
-export type AttributeTypes = "string" | "number" | "boolean" | "array-number" | "array-string" | "fitType" | "modeType" | "offScreenUpdateBehaviourType" | "animationsInfo";
+export type AttributeTypes = "string" | "number" | "boolean" | "array-number" | "array-string" | "object" | "fitType" | "modeType" | "offScreenUpdateBehaviourType" | "animationsInfo";
 
 export type CursorEventTypes = "down" | "up" | "enter" | "leave" | "move" | "drag";
 export type CursorEventTypesInput = Exclude<CursorEventTypes, "enter" | "leave">;
@@ -167,6 +167,7 @@ export type CursorEventTypesInput = Exclude<CursorEventTypes, "enter" | "leave">
 interface WidgetAttributes {
 	atlasPath?: string
 	skeletonPath?: string
+	rawData?: Record<string, string>
 	jsonSkeletonKey?: string
 	scale: number
 	animation?: string
@@ -268,6 +269,12 @@ export class SpineWebComponentWidget extends HTMLElement implements Disposable,
 	 */
 	public skeletonPath?: string;
 
+	/**
+	 * Holds the assets in base64 format.
+	 * Connected to `raw-data` attribute.
+	 */
+	public rawData?: Record<string ,string>;
+
 	/**
 	 * The name of the skeleton when the skeleton file is a JSON and contains multiple skeletons.
 	 * Connected to `json-skeleton-key` attribute.
@@ -763,6 +770,7 @@ export class SpineWebComponentWidget extends HTMLElement implements Disposable,
 	static attributesDescription: Record<string, { propertyName: keyof WidgetAttributes, type: AttributeTypes, defaultValue?: any }> = {
 		atlas: { propertyName: "atlasPath", type: "string" },
 		skeleton: { propertyName: "skeletonPath", type: "string" },
+		"raw-data": { propertyName: "rawData", type: "object" },
 		"json-skeleton-key": { propertyName: "jsonSkeletonKey", type: "string" },
 		scale: { propertyName: "scale", type: "number" },
 		animation: { propertyName: "animation", type: "string", defaultValue: undefined },
@@ -972,12 +980,18 @@ export class SpineWebComponentWidget extends HTMLElement implements Disposable,
 	private async loadSkeleton () {
 		this.loading = true;
 
-		const { atlasPath, skeletonPath, scale, skeletonData: skeletonDataInput } = this;
+		const { atlasPath, skeletonPath, scale, skeletonData: skeletonDataInput, rawData } = this;
 		if (!atlasPath || !skeletonPath) {
 			throw new Error(`Missing atlas path or skeleton path. Assets cannot be loaded: atlas: ${atlasPath}, skeleton: ${skeletonPath}`);
 		}
 		const isBinary = skeletonPath.endsWith(".skel");
 
+		if (rawData) {
+			for (let [key, value] of Object.entries(rawData)) {
+				this.overlay.assetManager.setRawDataURI(key, isBase64(value) ? `data:application/octet-stream;base64,${value}` : value);
+			}
+		}
+
 		// skeleton and atlas txt are loaded immeaditely
 		// textures are loaeded depending on the 'pages' param:
 		// - [0,2]: only pages at index 0 and 2 are loaded
@@ -2320,6 +2334,16 @@ function castArrayString (value: string | null, defaultValue = undefined) {
 	return value.split(",");
 }
 
+function castObject (value: string | null, defaultValue = undefined) {
+	if (value === null) return null;
+	return JSON.parse(value);
+}
+
+const base64RegExp = /^(([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==))$/;
+function isBase64(str: string) {
+    return base64RegExp.test(str);
+}
+
 function castValue (type: AttributeTypes, value: string | null, defaultValue?: any) {
 	switch (type) {
 		case "string":
@@ -2332,6 +2356,8 @@ function castValue (type: AttributeTypes, value: string | null, defaultValue?: a
 			return castArrayNumber(value, defaultValue);
 		case "array-string":
 			return castArrayString(value, defaultValue);
+		case "object":
+			return castObject(value, defaultValue);
 		case "fitType":
 			return isFitType(value) ? value : defaultValue;
 		case "modeType":