diff --git a/app/src/main/java/com/hippo/ehviewer/client/EhEngine.java b/app/src/main/java/com/hippo/ehviewer/client/EhEngine.java
index 294f92ebc..654177587 100644
--- a/app/src/main/java/com/hippo/ehviewer/client/EhEngine.java
+++ b/app/src/main/java/com/hippo/ehviewer/client/EhEngine.java
@@ -146,7 +146,7 @@ public class EhEngine {
         }
         String url = EhUrl.API_SIGN_IN;
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
                 .post(builder.build())
                 .build();
         Call call = okHttpClient.newCall(request);
@@ -175,7 +175,7 @@ public class EhEngine {
     public static GalleryListParser.Result getGalleryList(@Nullable EhClient.Task task, OkHttpClient okHttpClient,
             String url) throws Throwable {
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -308,7 +308,7 @@ public class EhEngine {
     public static GalleryDetail getGalleryDetail(@Nullable EhClient.Task task, OkHttpClient okHttpClient,
             String url) throws Throwable {
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -336,7 +336,7 @@ public class EhEngine {
     public static Pair<PreviewSet, Integer> getPreviewSet(
             @Nullable EhClient.Task task, OkHttpClient okHttpClient, String url) throws Throwable {
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -374,7 +374,7 @@ public class EhEngine {
         final RequestBody requestBody = RequestBody.create(MEDIA_TYPE_JSON, json.toString());
         String url = EhUrl.getApiUrl();
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
                 .post(requestBody)
                 .build();
         Call call = okHttpClient.newCall(request);
@@ -405,7 +405,7 @@ public class EhEngine {
         FormBody.Builder builder = new FormBody.Builder()
                 .add("commenttext_new", comment);
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
                 .post(builder.build())
                 .build();
         Call call = okHttpClient.newCall(request);
@@ -447,7 +447,7 @@ public class EhEngine {
         final RequestBody requestBody = RequestBody.create(MEDIA_TYPE_JSON, json.toString());
         String url = EhUrl.getApiUrl();
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
                 .post(requestBody)
                 .build();
         Call call = okHttpClient.newCall(request);
@@ -476,7 +476,7 @@ public class EhEngine {
     public static FavoritesParser.Result getFavorites(@Nullable EhClient.Task task, OkHttpClient okHttpClient,
             String url, boolean callApi) throws Throwable {
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -535,7 +535,7 @@ public class EhEngine {
         builder.add("update", "1");
         String url = EhUrl.getAddFavorites(gid, token);
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
                 .post(builder.build())
                 .build();
         Call call = okHttpClient.newCall(request);
@@ -589,7 +589,7 @@ public class EhEngine {
         }
         builder.add("apply", "Apply");
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
                 .post(builder.build())
                 .build();
         Call call = okHttpClient.newCall(request);
@@ -630,7 +630,7 @@ public class EhEngine {
     public static Pair<String, String>[] getTorrentList(@Nullable EhClient.Task task, OkHttpClient okHttpClient,
             String url) throws Throwable {
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -660,7 +660,7 @@ public class EhEngine {
     public static Pair<String, Pair<String, String>[]> getArchiveList(@Nullable EhClient.Task task, OkHttpClient okHttpClient,
             String url) throws Throwable {
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -699,7 +699,7 @@ public class EhEngine {
         builder.add("hathdl_xres", res);
         String url = EhUrl.getDownloadArchive(gid, token, or);
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
                 .post(builder.build())
                 .build();
         Call call = okHttpClient.newCall(request);
@@ -736,7 +736,7 @@ public class EhEngine {
             OkHttpClient okHttpClient) throws Throwable {
         String url = EhUrl.HOST_E;
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -775,7 +775,7 @@ public class EhEngine {
     private static ProfileParser.Result getProfileInternal(@Nullable EhClient.Task task,
             OkHttpClient okHttpClient, String url) throws Throwable {
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -803,7 +803,7 @@ public class EhEngine {
             OkHttpClient okHttpClient) throws Throwable {
         String url = EhUrl.URL_FORUMS;
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -840,7 +840,7 @@ public class EhEngine {
         final RequestBody requestBody = RequestBody.create(MEDIA_TYPE_JSON, json.toString());
         String url = EhUrl.getApiUrl();
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
                 .post(requestBody)
                 .build();
         Call call = okHttpClient.newCall(request);
@@ -901,7 +901,7 @@ public class EhEngine {
         );
         String url = EhUrl.getImageSearchUrl();
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
                 .post(builder.build())
                 .build();
         Call call = okHttpClient.newCall(request);
@@ -966,7 +966,7 @@ public class EhEngine {
     public static GalleryPageParser.Result getGalleryPage(@Nullable EhClient.Task task,
             OkHttpClient okHttpClient, String url) throws Throwable {
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig()).build();
+        Request request = new EhRequestBuilder(url).build();
         Call call = okHttpClient.newCall(request);
 
         // Put call
@@ -1001,7 +1001,7 @@ public class EhEngine {
         final RequestBody requestBody = RequestBody.create(MEDIA_TYPE_JSON, json.toString());
         String url = EhUrl.getApiUrl();
         Log.d(TAG, url);
-        Request request = new EhRequestBuilder(url, null != task ? task.getEhConfig() : Settings.getEhConfig())
+        Request request = new EhRequestBuilder(url)
             .post(requestBody)
             .build();
         Call call = okHttpClient.newCall(request);
diff --git a/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.java b/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.java
index ec681f78b..7c4b24c49 100644
--- a/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.java
+++ b/app/src/main/java/com/hippo/ehviewer/client/EhRequestBuilder.java
@@ -16,17 +16,11 @@
 
 package com.hippo.ehviewer.client;
 
-import com.hippo.ehviewer.Settings;
 import com.hippo.okhttp.ChromeRequestBuilder;
 
 public class EhRequestBuilder extends ChromeRequestBuilder {
 
     public EhRequestBuilder(String url) {
-        this(url, Settings.getEhConfig());
-    }
-
-    public EhRequestBuilder(String url, EhConfig ehConfig) {
         super(url);
-        tag(ehConfig);
     }
 }
diff --git a/app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java b/app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java
index 5e492a28c..ac9240687 100644
--- a/app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java
+++ b/app/src/main/java/com/hippo/ehviewer/spider/SpiderQueen.java
@@ -33,7 +33,6 @@ import com.hippo.ehviewer.EhApplication;
 import com.hippo.ehviewer.GetText;
 import com.hippo.ehviewer.R;
 import com.hippo.ehviewer.Settings;
-import com.hippo.ehviewer.client.EhConfig;
 import com.hippo.ehviewer.client.EhEngine;
 import com.hippo.ehviewer.client.EhRequestBuilder;
 import com.hippo.ehviewer.client.EhUrl;
@@ -736,14 +735,14 @@ public final class SpiderQueen implements Runnable {
         }
     }
 
-    private SpiderInfo readSpiderInfoFromInternet(EhConfig config) {
+    private SpiderInfo readSpiderInfoFromInternet() {
         try {
             SpiderInfo spiderInfo = new SpiderInfo();
             spiderInfo.gid = mGalleryInfo.gid;
             spiderInfo.token = mGalleryInfo.token;
 
             Request request = new EhRequestBuilder(EhUrl.getGalleryDetailUrl(
-                    mGalleryInfo.gid, mGalleryInfo.token, 0, false), config).build();
+                    mGalleryInfo.gid, mGalleryInfo.token, 0, false)).build();
             Response response = mHttpClient.newCall(request).execute();
             String body = response.body().string();
 
@@ -757,7 +756,7 @@ public final class SpiderQueen implements Runnable {
         }
     }
 
-    private String getPTokenFromInternet(int index, EhConfig config) {
+    private String getPTokenFromInternet(int index) {
         SpiderInfo spiderInfo = mSpiderInfo.get();
         if (spiderInfo == null) {
             return null;
@@ -781,7 +780,7 @@ public final class SpiderQueen implements Runnable {
                 Log.d(TAG, "index " + index + ", previewIndex " + previewIndex +
                         ", previewPerPage " + spiderInfo.previewPerPage+ ", url " + url);
             }
-            Request request = new EhRequestBuilder(url, config).build();
+            Request request = new EhRequestBuilder(url).build();
             Response response = mHttpClient.newCall(request).execute();
             String body = response.body().string();
             readPreviews(body, previewIndex, spiderInfo);
@@ -827,11 +826,6 @@ public final class SpiderQueen implements Runnable {
     }
 
     private void runInternal() {
-        // Get EhConfig
-        EhConfig config = Settings.getEhConfig().clone();
-        config.previewSize = EhConfig.PREVIEW_SIZE_NORMAL;
-        config.setDirty();
-
         // Read spider info
         SpiderInfo spiderInfo = readSpiderInfoFromLocal();
 
@@ -842,7 +836,7 @@ public final class SpiderQueen implements Runnable {
 
         // Spider info from internet
         if (spiderInfo == null) {
-            spiderInfo = readSpiderInfoFromInternet(config);
+            spiderInfo = readSpiderInfoFromInternet();
         }
 
         // Error! Can't get spiderInfo
@@ -913,10 +907,10 @@ public final class SpiderQueen implements Runnable {
             }
 
             // Get pToken from internet
-            pToken = getPTokenFromInternet(index, config);
+            pToken = getPTokenFromInternet(index);
             if (null == pToken) {
                 // Preview size may changed, so try to get pToken twice
-                pToken = getPTokenFromInternet(index, config);
+                pToken = getPTokenFromInternet(index);
             }
 
             if (null == pToken) {