diff --git a/android/gltfio-android/src/main/cpp/ResourceLoader.cpp b/android/gltfio-android/src/main/cpp/ResourceLoader.cpp
index 60fc272169..1dad00871a 100644
--- a/android/gltfio-android/src/main/cpp/ResourceLoader.cpp
+++ b/android/gltfio-android/src/main/cpp/ResourceLoader.cpp
@@ -52,10 +52,21 @@ Java_com_google_android_filament_gltfio_ResourceLoader_nAddResourceData(JNIEnv*
         jlong nativeLoader, jstring url, jobject javaBuffer, jint remaining) {
     ResourceLoader* loader = (ResourceLoader*) nativeLoader;
     AutoBuffer* buffer = new AutoBuffer(env, javaBuffer, remaining);
-    const char* curl = env->GetStringUTFChars(url, nullptr);
-    loader->addResourceData(curl,
+    const char* cstring = env->GetStringUTFChars(url, nullptr);
+    loader->addResourceData(cstring,
             ResourceLoader::BufferDescriptor(buffer->getData(), buffer->getSize(), &destroy,
                     buffer));
+    env->ReleaseStringUTFChars(url, cstring);
+}
+
+extern "C" JNIEXPORT jboolean JNICALL
+Java_com_google_android_filament_gltfio_ResourceLoader_nHasResourceData(JNIEnv* env, jclass,
+        jlong nativeLoader, jstring url) {
+    ResourceLoader* loader = (ResourceLoader*) nativeLoader;
+    const char* cstring = env->GetStringUTFChars(url, nullptr);
+    bool status = loader->hasResourceData(cstring);
+    env->ReleaseStringUTFChars(url, cstring);
+    return status;
 }
 
 extern "C" JNIEXPORT void JNICALL
diff --git a/android/gltfio-android/src/main/java/com/google/android/filament/gltfio/ResourceLoader.java b/android/gltfio-android/src/main/java/com/google/android/filament/gltfio/ResourceLoader.java
index 1850f6f541..12b92f91be 100644
--- a/android/gltfio-android/src/main/java/com/google/android/filament/gltfio/ResourceLoader.java
+++ b/android/gltfio-android/src/main/java/com/google/android/filament/gltfio/ResourceLoader.java
@@ -75,6 +75,13 @@ public class ResourceLoader {
         return this;
     }
 
+    /**
+     * Checks if the given resource has already been loaded.
+     */
+    public boolean hasResourceData(@NonNull String uri) {
+        return nHasResourceData(mNativeObject, uri);
+    }
+
     /**
      * Iterates through all external buffers and images and creates corresponding Filament objects
      * (vertex buffers, textures, etc), which become owned by the asset.
@@ -95,5 +102,6 @@ public class ResourceLoader {
     private static native void nDestroyResourceLoader(long nativeLoader);
     private static native void nAddResourceData(long nativeLoader, String url, Buffer buffer,
             int remaining);
+    private static native boolean nHasResourceData(long nativeLoader, String url);
     private static native void nLoadResources(long nativeLoader, long nativeAsset);
 }
diff --git a/libs/gltfio/include/gltfio/ResourceLoader.h b/libs/gltfio/include/gltfio/ResourceLoader.h
index 6f341d8a9e..2e2637078e 100644
--- a/libs/gltfio/include/gltfio/ResourceLoader.h
+++ b/libs/gltfio/include/gltfio/ResourceLoader.h
@@ -92,7 +92,12 @@ public:
      * Adds raw resource data into a cache for platforms that do not have filesystem or network
      * access.
      */
-    void addResourceData(std::string url, BufferDescriptor&& buffer);
+    void addResourceData(const char* url, BufferDescriptor&& buffer);
+
+    /**
+     * Checks if the given resource has already been loaded.
+     */
+    bool hasResourceData(const char* url) const;
 
 private:
     bool createTextures(details::FFilamentAsset* asset) const;
diff --git a/libs/gltfio/src/ResourceLoader.cpp b/libs/gltfio/src/ResourceLoader.cpp
index 0dc8eb856f..82cc298bcb 100644
--- a/libs/gltfio/src/ResourceLoader.cpp
+++ b/libs/gltfio/src/ResourceLoader.cpp
@@ -116,10 +116,14 @@ static void importSkinningData(Skin& dstSkin, const cgltf_skin& srcSkin) {
     }
 }
 
-void ResourceLoader::addResourceData(std::string url, BufferDescriptor&& buffer) {
+void ResourceLoader::addResourceData(const char* url, BufferDescriptor&& buffer) {
     pImpl->mUserCache.emplace(url, std::move(buffer));
 }
 
+bool ResourceLoader::hasResourceData(const char* url) const {
+    return pImpl->mUserCache.find(url) != pImpl->mUserCache.end();
+}
+
 static void convertBytesToShorts(uint16_t* dst, const uint8_t* src, size_t count) {
     for (size_t i = 0; i < count; ++i) {
         dst[i] = src[i];
diff --git a/web/filament-js/jsbindings.cpp b/web/filament-js/jsbindings.cpp
index 33ae30d305..32dc244696 100644
--- a/web/filament-js/jsbindings.cpp
+++ b/web/filament-js/jsbindings.cpp
@@ -1447,7 +1447,11 @@ class_<ResourceLoader>("gltfio$ResourceLoader")
 
     .function("addResourceData", EMBIND_LAMBDA(void, (ResourceLoader* self, std::string url,
             BufferDescriptor buffer), {
-        self->addResourceData(url, std::move(*buffer.bd));
+        self->addResourceData(url.c_str(), std::move(*buffer.bd));
+    }), allow_raw_pointers())
+
+    .function("hasResourceData", EMBIND_LAMBDA(bool, (ResourceLoader* self, std::string url), {
+        return self->hasResourceData(url.c_str());
     }), allow_raw_pointers())
 
     .function("loadResources", &ResourceLoader::loadResources, allow_raw_pointers());