diff --git a/entry/src/main/ets/pages/DownsamplingPage.ets b/entry/src/main/ets/pages/DownsamplingPage.ets
index f6b4c7a..839b72c 100644
--- a/entry/src/main/ets/pages/DownsamplingPage.ets
+++ b/entry/src/main/ets/pages/DownsamplingPage.ets
@@ -1,3 +1,18 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 import { FitCenter, ImageKnifeComponent,
   ImageKnifeData,
   ImageKnifeGlobal,
diff --git a/library/src/main/ets/components/imageknife/Downsampling/BaseDownsampling.ets b/library/src/main/ets/components/imageknife/Downsampling/BaseDownsampling.ets
index e3c09d7..0ffec0c 100644
--- a/library/src/main/ets/components/imageknife/Downsampling/BaseDownsampling.ets
+++ b/library/src/main/ets/components/imageknife/Downsampling/BaseDownsampling.ets
@@ -1,3 +1,18 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 import { lang }from '@kit.ArkTs';
 
 type ISendable = lang.ISendable;
diff --git a/library/src/main/ets/components/imageknife/Downsampling/DownsampleStartegy.ets b/library/src/main/ets/components/imageknife/Downsampling/DownsampleStartegy.ets
index 5f02cb0..fdd6a43 100644
--- a/library/src/main/ets/components/imageknife/Downsampling/DownsampleStartegy.ets
+++ b/library/src/main/ets/components/imageknife/Downsampling/DownsampleStartegy.ets
@@ -1,3 +1,17 @@
+/*
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 import { BaseDownsampling } from './BaseDownsampling'
 
 @Sendable
diff --git a/library/src/main/ets/components/imageknife/Downsampling/Downsampler.ets b/library/src/main/ets/components/imageknife/Downsampling/Downsampler.ets
index 1f723a6..874332c 100644
--- a/library/src/main/ets/components/imageknife/Downsampling/Downsampler.ets
+++ b/library/src/main/ets/components/imageknife/Downsampling/Downsampler.ets
@@ -1,5 +1,17 @@
 /*
- * asdfasdfasdfasdfasdf*/
+ * Copyright (C) 2024 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 import { RequestOption } from '../RequestOption';
 import { FileTypeUtil } from '../utils/FileTypeUtil';
 import { CenterOutside, FitCenter, SampleSizeRounding } from './DownsampleStartegy';