diff --git a/README.md b/README.md
index 568875e..bf378e5 100644
--- a/README.md
+++ b/README.md
@@ -1,14 +1,13 @@
 # ⚡ **Dcryptor** ⚡
 
-###Images
-
-![Screenshot_2021-07-15-17-03-32-579_com anshagrawal dcmlkit](https://user-images.githubusercontent.com/72314518/125781836-610d1d57-9455-4eed-96e5-76cf16311236.jpg) 
-![Screenshot_2021-07-15-17-05-52-505_com anshagrawal dcmlkit](https://user-images.githubusercontent.com/72314518/125781860-30e49b76-462f-4a32-8202-108bf74256c9.jpg)
-![Screenshot_2021-07-15-17-03-38-114_com anshagrawal dcmlkit](https://user-images.githubusercontent.com/72314518/125781977-529be48d-0b18-4fdd-aadc-997870a1acda.jpg)
-![Screenshot_2021-07-15-17-05-36-942_com anshagrawal dcmlkit](https://user-images.githubusercontent.com/72314518/125781985-4771204b-0caf-44bc-b781-a276f9c86ad2.jpg)
-![Screenshot_2021-07-15-17-05-36-942_com anshagrawal dcmlkit](https://user-images.githubusercontent.com/72314518/125782000-05344339-37e4-4350-bb1a-0c33e153d388.jpg)
-![Screenshot_2021-07-15-17-03-35-678_com anshagrawal dcmlkit](https://user-images.githubusercontent.com/72314518/125782064-0de4d5cc-bd63-46f2-a496-a20fcb6e0d7f.jpg)
-
+## Images
+<div style="display:flex;">
+<img src = "https://user-images.githubusercontent.com/72314518/125781836-610d1d57-9455-4eed-96e5-76cf16311236.jpg" width = "180px" height = "320px"> 
+<img src = "https://user-images.githubusercontent.com/72314518/125781977-529be48d-0b18-4fdd-aadc-997870a1acda.jpg" width = "180px" height = "320px"> 
+<img src = "https://user-images.githubusercontent.com/72314518/125782064-0de4d5cc-bd63-46f2-a496-a20fcb6e0d7f.jpg" width = "180px" height = "320px"> 
+<img src = "https://user-images.githubusercontent.com/72314518/125781985-4771204b-0caf-44bc-b781-a276f9c86ad2.jpg" width = "180px" height = "320px"> 
+<img src = "https://user-images.githubusercontent.com/72314518/125781860-30e49b76-462f-4a32-8202-108bf74256c9.jpg" width = "180px" height = "320px"> 
+</div>
 
 ## 🏁 Overview
 
@@ -54,4 +53,5 @@ __*You can also access your previously decrypted results and share them too!*__
 
 
 
-###Images
+
+
diff --git a/app/src/main/java/com/anshagrawal/dcmlkit/Activities/DashboardActivity.java b/app/src/main/java/com/anshagrawal/dcmlkit/Activities/DashboardActivity.java
index 572bdaa..81fb4e1 100644
--- a/app/src/main/java/com/anshagrawal/dcmlkit/Activities/DashboardActivity.java
+++ b/app/src/main/java/com/anshagrawal/dcmlkit/Activities/DashboardActivity.java
@@ -25,6 +25,7 @@
 import com.android.volley.toolbox.HttpHeaderParser;
 import com.android.volley.toolbox.JsonObjectRequest;
 import com.anshagrawal.dcmlkit.Adapters.CypherAdapter;
+import com.anshagrawal.dcmlkit.BuildConfig;
 import com.anshagrawal.dcmlkit.Models.CypherModel;
 import com.anshagrawal.dcmlkit.MySingleton;
 import com.anshagrawal.dcmlkit.R;
@@ -118,8 +119,8 @@ protected void onActivityResult(int requestCode, int resultCode, @Nullable Inten
     //Api for fetching the data of a particular user
     private void getTask() {
         arrayList = new ArrayList<>();
-        String url = "https://acm-dcryptor.herokuapp.com/api/v2/history";
-        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, url, null, new Response.Listener<JSONObject>() {
+
+        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, BuildConfig.HISTORYLINK, null, new Response.Listener<JSONObject>() {
             @Override
             public void onResponse(JSONObject response) {
                 try {
diff --git a/app/src/main/java/com/anshagrawal/dcmlkit/Activities/LoginActivity.java b/app/src/main/java/com/anshagrawal/dcmlkit/Activities/LoginActivity.java
index 97d8b7b..387ee9c 100644
--- a/app/src/main/java/com/anshagrawal/dcmlkit/Activities/LoginActivity.java
+++ b/app/src/main/java/com/anshagrawal/dcmlkit/Activities/LoginActivity.java
@@ -20,6 +20,7 @@
 import com.android.volley.VolleyError;
 import com.android.volley.toolbox.HttpHeaderParser;
 import com.android.volley.toolbox.JsonObjectRequest;
+import com.anshagrawal.dcmlkit.BuildConfig;
 import com.anshagrawal.dcmlkit.MySingleton;
 import com.anshagrawal.dcmlkit.UtilsService.SharedPreferencesClass;
 import com.anshagrawal.dcmlkit.UtilsService.UtilService;
@@ -93,9 +94,9 @@ private void loginUser(View view) {
         params.put("password", password);
 
 
-        String url = "https://acm-dcryptor.herokuapp.com/api/v1/login";
+
         //Json Object and Post method
-        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, url, new JSONObject(params), new Response.Listener<JSONObject>() {
+        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, BuildConfig.LOGINLINK, new JSONObject(params), new Response.Listener<JSONObject>() {
             @Override
             public void onResponse(JSONObject response) {
                 try {
diff --git a/app/src/main/java/com/anshagrawal/dcmlkit/Activities/SignUpActivity.java b/app/src/main/java/com/anshagrawal/dcmlkit/Activities/SignUpActivity.java
index a00944e..c0d4084 100644
--- a/app/src/main/java/com/anshagrawal/dcmlkit/Activities/SignUpActivity.java
+++ b/app/src/main/java/com/anshagrawal/dcmlkit/Activities/SignUpActivity.java
@@ -21,6 +21,7 @@
 import com.android.volley.toolbox.HttpHeaderParser;
 import com.android.volley.toolbox.JsonObjectRequest;
 import com.android.volley.toolbox.Volley;
+import com.anshagrawal.dcmlkit.BuildConfig;
 import com.anshagrawal.dcmlkit.UtilsService.SharedPreferencesClass;
 import com.anshagrawal.dcmlkit.UtilsService.UtilService;
 import com.anshagrawal.dcmlkit.databinding.ActivitySignUpBinding;
@@ -98,9 +99,8 @@ private void registerUser() {
         }
 
 
-        String url = "https://acm-dcryptor.herokuapp.com/api/v1/signup";
 
-        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, url, params, new Response.Listener<JSONObject>() {
+        JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.POST, BuildConfig.SIGNUPLINK, params, new Response.Listener<JSONObject>() {
             @Override
             public void onResponse(JSONObject response) {
                 try {