diff --git a/code/AssetLib/USD/USDLoaderUtil.cpp b/code/AssetLib/USD/USDLoaderUtil.cpp
index 6f07d4312..16f0ba8ae 100644
--- a/code/AssetLib/USD/USDLoaderUtil.cpp
+++ b/code/AssetLib/USD/USDLoaderUtil.cpp
@@ -87,6 +87,30 @@ bool isUsdc(const std::string &pFile) {
     }
     return (ext[0] == 'u' || ext[0] == 'U') && (ext[1] == 's' || ext[1] == 'S') && (ext[2] == 'd' || ext[2] == 'D') && (ext[3] == 'c' || ext[3] == 'C');
 }
+
+bool isUsdz(const std::string &pFile) {
+    size_t pos = pFile.find_last_of('.');
+    if (pos == string::npos) {
+        return false;
+    }
+    string ext = pFile.substr(pos + 1);
+    if (ext.size() != 4) {
+        return false;
+    }
+    return (ext[0] == 'u' || ext[0] == 'U') && (ext[1] == 's' || ext[1] == 'S') && (ext[2] == 'd' || ext[2] == 'D') && (ext[3] == 'z' || ext[3] == 'Z');
+}
+
+bool isUsd(const std::string &pFile) {
+    size_t pos = pFile.find_last_of('.');
+    if (pos == string::npos) {
+        return false;
+    }
+    string ext = pFile.substr(pos + 1);
+    if (ext.size() != 3) {
+        return false;
+    }
+    return (ext[0] == 'u' || ext[0] == 'U') && (ext[1] == 's' || ext[1] == 'S') && (ext[2] == 'd' || ext[2] == 'D');
+}
 } // namespace Assimp
 
 #endif // !! ASSIMP_BUILD_NO_USD_IMPORTER
diff --git a/code/AssetLib/USD/USDLoaderUtil.h b/code/AssetLib/USD/USDLoaderUtil.h
index 858f3a900..b39cd254e 100644
--- a/code/AssetLib/USD/USDLoaderUtil.h
+++ b/code/AssetLib/USD/USDLoaderUtil.h
@@ -53,5 +53,7 @@ Copyright (c) 2006-2024, assimp team
 namespace Assimp {
 bool isUsda(const std::string &pFile);
 bool isUsdc(const std::string &pFile);
+bool isUsdz(const std::string &pFile);
+bool isUsd(const std::string &pFile);
 } // namespace Assimp
 #endif // AI_USDLOADER_UTIL_H_INCLUDED