diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5cef38d6f9c31c589e0dd89fa3ba0abbb53f3c11..82c807e707b582f94f6a81fe3db30b971b48c9db 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@ Note that since we don't clearly distinguish between a public and private interf
 ## [Unreleased]
 
 - Make `PluginContext.initContainer` checkered canvas background optional
+- Store URL of downloaded assets to detect zip/gzip based on extension
 
 ## [v3.23.0] - 2022-10-19
 
diff --git a/src/mol-util/assets.ts b/src/mol-util/assets.ts
index 18e4f3d531e63706e115bb34716332f7259e24e7..4fb7d406a928117fbecfef5d40d7098e948c84eb 100644
--- a/src/mol-util/assets.ts
+++ b/src/mol-util/assets.ts
@@ -100,7 +100,7 @@ class AssetManager {
                 }
 
                 const data = await ajaxGet({ ...asset, type: 'binary' }).runInContext(ctx);
-                const file = new File([data], 'raw-data');
+                const file = new File([data], asset.url);
                 this._assets.set(asset.id, { asset, file, refCount: 1 });
                 return Asset.Wrapper(await readFromFile(file, type).runInContext(ctx), asset, this);
             });