Support Hugging Face blob file URLs

invokeai/app/services/model_install/model_install_default.py

@@ -762,7 +762,9 @@ def _remote_files_from_source(
             except ValueError:
                 pass
 
-            return [RemoteModelFile(url=source.url, path=Path("."), size=0)], None
+            return [
+                RemoteModelFile(url=self._normalize_huggingface_blob_url(source.url), path=Path("."), size=0)
+            ], None
 
         raise Exception(f"No files associated with {source}")
 
@@ -1488,3 +1490,15 @@ def get_fetcher_from_url(url: str) -> Type[ModelMetadataFetchBase]:
         if re.match(r"^https?://huggingface.co/[^/]+/[^/]+$", url.lower()):
             return HuggingFaceMetadataFetch
         raise ValueError(f"Unsupported model source: '{url}'")
+
+    @staticmethod
+    def _normalize_huggingface_blob_url(url: AnyHttpUrl) -> Url:
+        """Convert Hugging Face file page URLs to direct download URLs."""
+        return Url(
+            re.sub(
+                r"^(https?://huggingface\.co/[^/]+/[^/]+)/blob/([^?#]+)([?#].*)?$",
+                r"\1/resolve/\2\3",
+                str(url),
+                flags=re.IGNORECASE,
+            )
+        )

tests/app/services/model_install/test_model_install.py

@@ -321,6 +321,22 @@ def test_simple_download(mm2_installer: ModelInstallServiceBase, mm2_app_config:
     assert isinstance(bus.events[4], ModelInstallCompleteEvent)  # install completed
 
 
+def test_huggingface_blob_url_uses_resolve_download_url(mm2_installer: ModelInstallServiceBase) -> None:
+    source = URLModelSource(
+        url=Url("https://huggingface.co/h94/IP-Adapter/blob/main/sdxl_models/ip-adapter.safetensors")
+    )
+
+    assert isinstance(mm2_installer, ModelInstallService)
+    files, metadata = mm2_installer._remote_files_from_source(source)
+
+    assert metadata is None
+    assert len(files) == 1
+    assert (
+        str(files[0].url)
+        == "https://huggingface.co/h94/IP-Adapter/resolve/main/sdxl_models/ip-adapter.safetensors"
+    )
+
+
 @pytest.mark.timeout(timeout=10, method="thread")
 def test_huggingface_install(mm2_installer: ModelInstallServiceBase, mm2_app_config: InvokeAIAppConfig) -> None:
     source = URLModelSource(url=Url("https://huggingface.co/stabilityai/sdxl-turbo"))