diff --git a/multimedia/image_framework/include/image/pixelmap_native.h b/multimedia/image_framework/include/image/pixelmap_native.h
index c7ea3eb576f3ceb7f028f68ca88907fe5f878aed..719a29517041d9d4d3f9b55ed7d401765705ef3a 100644
--- a/multimedia/image_framework/include/image/pixelmap_native.h
+++ b/multimedia/image_framework/include/image/pixelmap_native.h
@@ -901,6 +901,32 @@ Image_ErrorCode OH_PixelmapNative_SetColorSpaceNative(OH_PixelmapNative *pixelma
  */
 Image_ErrorCode OH_PixelmapNative_SetMemoryName(OH_PixelmapNative *pixelmap, char *name, size_t *size);
 
+/**
+ * @brief Get the total number of bytes occupied by all pixels in the Pixelmap, without any padding.
+ *
+ * @param pixelmap The Pixelmap pointer to be operated.
+ * @param byteCount The total number of bytes to be retrieved.
+ * @return Function result code:
+ *         {@link IMAGE_SUCCESS} If the operation is successful.
+ *         {@link IMAGE_BAD_PARAMETER} If invalid parameter, pixelmap or byteCount are invalid.
+ * @see OH_PixelmapNative
+ * @since 16
+ */
+Image_ErrorCode OH_PixelmapNative_GetByteCount(OH_PixelmapNative *pixelmap, uint32_t *byteCount);
+
+/**
+ * @brief Get the capacity of the Pixelmap, which is the number of bytes allocated by the Pixelmap.
+ *
+ * @param pixelmap The Pixelmap pointer to be operated.
+ * @param capacity The capacity to be retrieved.
+ * @return Function result code:
+ *         {@link IMAGE_SUCCESS} If the operation is successful.
+ *         {@link IMAGE_BAD_PARAMETER} If invalid parameter, pixelmap or byteCount are invalid.
+ * @see OH_PixelmapNative
+ * @since 16
+ */
+Image_ErrorCode OH_PixelmapNative_GetCapacity(OH_PixelmapNative *pixelmap, uint32_t *capacity);
+
 #ifdef __cplusplus
 };
 #endif
diff --git a/multimedia/image_framework/libpixelmap.ndk.json b/multimedia/image_framework/libpixelmap.ndk.json
index 4c103c8aea0f003b44d024d9e8c13cbe9506311b..df5893bb54f7b95c93d18516455922fae4158f5e 100644
--- a/multimedia/image_framework/libpixelmap.ndk.json
+++ b/multimedia/image_framework/libpixelmap.ndk.json
@@ -182,5 +182,13 @@
     {
         "first_introduced": "13",
         "name": "OH_PixelmapNative_SetMemoryName"
+    },
+    {
+        "first_introduced": "16",
+        "name": "OH_PixelmapNative_GetByteCount"
+    },
+    {
+        "first_introduced": "16",
+        "name": "OH_PixelmapNative_GetCapacity"
     }
 ]
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