diff --git a/app/src/main/java/cn/mfuns/webapp/webview/MfunsWebViewClient.kt b/app/src/main/java/cn/mfuns/webapp/webview/MfunsWebViewClient.kt
index 6dca541..19429e5 100644
--- a/app/src/main/java/cn/mfuns/webapp/webview/MfunsWebViewClient.kt
+++ b/app/src/main/java/cn/mfuns/webapp/webview/MfunsWebViewClient.kt
@@ -2,7 +2,12 @@ package cn.mfuns.webapp.webview
 
 import android.content.Context
 import android.content.Intent
+import android.widget.Toast
+import androidx.preference.PreferenceManager
 import cn.mfuns.webapp.PhotoViewActivity
+import cn.mfuns.webapp.R
+import cn.mfuns.webapp.util.AndroidUtil
+import cn.mfuns.webapp.util.Viewer
 import java.net.URL
 
 class MfunsWebViewClient {
@@ -14,10 +19,42 @@ class MfunsWebViewClient {
             path = url.split(path)[0] + path
             if (path.isNullOrBlank()) return false
 
-            // Start PhotoViewActivity
-            val intent = Intent(context, PhotoViewActivity::class.java)
-            intent.putExtra("url", path)
-            context.startActivity(intent)
+            when (PreferenceManager.getDefaultSharedPreferences(context).getString(
+                "settings_viewer_default_action",
+                context.resources.getStringArray(R.array.settings_viewer_action_list)[0]
+            )) {
+                context.resources.getStringArray(R.array.settings_viewer_action_list)[0] -> {
+                    val intent = Intent(context, PhotoViewActivity::class.java)
+                    intent.putExtra("url", path)
+                    context.startActivity(intent)
+                }
+                context.resources.getStringArray(R.array.settings_viewer_action_list)[1] -> {
+                    AndroidUtil.getCurrentActivity().apply {
+                        Viewer.download(
+                            this,
+                            url,
+                            { f -> Viewer.open(this, f.first) },
+                            {
+                                Toast.makeText(this, R.string.viewer_download_failed, Toast.LENGTH_SHORT).show()
+                                finish()
+                            }
+                        )
+                    }
+                }
+                context.resources.getStringArray(R.array.settings_viewer_action_list)[2] -> {
+                    AndroidUtil.getCurrentActivity().apply {
+                        Viewer.download(
+                            this,
+                            url,
+                            { f -> Viewer.save(this, f.third, f.second) },
+                            {
+                                Toast.makeText(this, R.string.viewer_download_failed, Toast.LENGTH_SHORT).show()
+                                finish()
+                            }
+                        )
+                    }
+                }
+            }
 
             return true
         }