diff --git a/app/src/main/java/io/legado/app/help/http/api/HttpGetApi.kt b/app/src/main/java/io/legado/app/help/http/api/HttpGetApi.kt
index 9b44901bc..315dc881f 100644
--- a/app/src/main/java/io/legado/app/help/http/api/HttpGetApi.kt
+++ b/app/src/main/java/io/legado/app/help/http/api/HttpGetApi.kt
@@ -11,7 +11,7 @@ import retrofit2.http.Url
  * Created by GKF on 2018/1/21.
  * get web content
  */
-
+@Suppress("unused")
 interface HttpGetApi {
     @GET
     suspend fun getAsync(
@@ -38,4 +38,11 @@ interface HttpGetApi {
         @QueryMap(encoded = true) queryMap: Map<String, String>,
         @HeaderMap headers: Map<String, String>
     ): Call<String>
+
+    @GET
+    suspend fun getMapByteAsync(
+        @Url url: String,
+        @QueryMap(encoded = true) queryMap: Map<String, String>,
+        @HeaderMap headers: Map<String, String>
+    ): Response<ByteArray>
 }
diff --git a/app/src/main/java/io/legado/app/help/http/api/HttpPostApi.kt b/app/src/main/java/io/legado/app/help/http/api/HttpPostApi.kt
index 86d91d30c..9634b5b79 100644
--- a/app/src/main/java/io/legado/app/help/http/api/HttpPostApi.kt
+++ b/app/src/main/java/io/legado/app/help/http/api/HttpPostApi.kt
@@ -9,7 +9,7 @@ import retrofit2.http.*
  * Created by GKF on 2018/1/29.
  * post
  */
-
+@Suppress("unused")
 interface HttpPostApi {
 
     @FormUrlEncoded