diff --git a/CONFIG_README.md b/CONFIG_README.md
index 261e7db..2dd9896 100644
--- a/CONFIG_README.md
+++ b/CONFIG_README.md
@@ -18,10 +18,10 @@ Create a `config.json` file with the following structure:
 ```json
 {
   "app_name": "WebDrop Bridge",
-  "webapp_url": "https://wps.agravity.io/",
+  "webapp_url": "https://dev.agravity.io/",
   "url_mappings": [
     {
-      "url_prefix": "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/",
+      "url_prefix": "https://devagravitystg.file.core.windows.net/devagravitysync/",
       "local_path": "Z:"
     }
   ],
@@ -45,7 +45,7 @@ Create a `config.json` file with the following structure:
 ### Core Settings
 
 - **`webapp_url`** (string): URL of the web application to load
-  - Example: `"https://wps.agravity.io/"`
+  - Example: `"https://dev.agravity.io/"`
   - Supports `http://`, `https://`, or `file:///` URLs
 
 - **`url_mappings`** (array): Azure Blob Storage URL to local path mappings
@@ -55,7 +55,7 @@ Create a `config.json` file with the following structure:
   - Example:
     ```json
     {
-      "url_prefix": "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/",
+      "url_prefix": "https://dev.file.core.windows.net/devagravitysync/",
       "local_path": "Z:"
     }
     ```
@@ -68,7 +68,7 @@ Create a `config.json` file with the following structure:
 
 When the web application provides a drag URL like:
 ```
-https://wpsagravitystg.file.core.windows.net/wpsagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/Hintergrund_Agravity.png
+https://devagravitystg.file.core.windows.net/devagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/Hintergrund_Agravity.png
 ```
 
 It will be converted to:
@@ -84,7 +84,7 @@ Z:\aN5PysnXIuRECzcRbvHkjL7g0\Hintergrund_Agravity.png
 
 - **`allowed_urls`** (array): Allowed URL patterns for web content
   - Empty array = no restriction
-  - Example: `["wps.agravity.io", "*.example.com"]`
+  - Example: `["dev.agravity.io", "*.example.com"]`
 
 ### Update Settings
 
@@ -148,7 +148,7 @@ If no JSON config exists, WebDrop Bridge will load from `.env`:
 
 ```env
 APP_NAME=WebDrop Bridge
-WEBAPP_URL=https://wps.agravity.io/
+WEBAPP_URL=https://dev.agravity.io/
 ALLOWED_ROOTS=Z:/
 LOG_LEVEL=INFO
 WINDOW_WIDTH=1024
@@ -175,14 +175,14 @@ WINDOW_HEIGHT=768
 
 ## Example Configurations
 
-### Production (Agravity WPS)
+### Production (Agravity DEV)
 
 ```json
 {
-  "webapp_url": "https://wps.agravity.io/",
+  "webapp_url": "https://dev.agravity.io/",
   "url_mappings": [
     {
-      "url_prefix": "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/",
+      "url_prefix": "https://devagravitystg.file.core.windows.net/devagravitysync/",
       "local_path": "Z:"
     }
   ],
diff --git a/config.example.json b/config.example.json
index 8da1b1b..c58a29c 100644
--- a/config.example.json
+++ b/config.example.json
@@ -1,9 +1,9 @@
 {
   "app_name": "WebDrop Bridge",
-  "webapp_url": "https://wps.agravity.io/",
+  "webapp_url": "https://dev.agravity.io/",
   "url_mappings": [
     {
-      "url_prefix": "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/",
+      "url_prefix": "https://devagravitystg.file.core.windows.net/devagravitysync/",
       "local_path": "Z:"
     }
   ],
diff --git a/src/webdrop_bridge/config.py b/src/webdrop_bridge/config.py
index 667bd04..c246417 100644
--- a/src/webdrop_bridge/config.py
+++ b/src/webdrop_bridge/config.py
@@ -49,7 +49,7 @@ class Config:
         log_file: Optional log file path
         allowed_roots: List of whitelisted root directories for file access
         allowed_urls: List of whitelisted URL domains/patterns (empty = no restriction)
-        webapp_url: URL to load in embedded web application (default: https://wps.agravity.io/)
+        webapp_url: URL to load in embedded web application (default: https://dev.agravity.io/)
         url_mappings: List of Azure URL to local path mappings
         check_file_exists: Whether to validate that files exist before drag
         auto_check_updates: Whether to automatically check for updates
@@ -139,7 +139,7 @@ class Config:
             log_file=log_file,
             allowed_roots=allowed_roots,
             allowed_urls=data.get("allowed_urls", []),
-            webapp_url=data.get("webapp_url", "https://wps.agravity.io/"),
+            webapp_url=data.get("webapp_url", "https://dev.agravity.io/"),
             url_mappings=mappings,
             check_file_exists=data.get("check_file_exists", True),
             auto_check_updates=data.get("auto_check_updates", True),
@@ -181,7 +181,7 @@ class Config:
         log_file_str = os.getenv("LOG_FILE", "logs/webdrop_bridge.log")
         allowed_roots_str = os.getenv("ALLOWED_ROOTS", "Z:/,C:/Users/Public")
         allowed_urls_str = os.getenv("ALLOWED_URLS", "")
-        webapp_url = os.getenv("WEBAPP_URL", "https://wps.agravity.io/")
+        webapp_url = os.getenv("WEBAPP_URL", "https://dev.agravity.io/")
         window_width = int(os.getenv("WINDOW_WIDTH", "1024"))
         window_height = int(os.getenv("WINDOW_HEIGHT", "768"))
         # Window title defaults to app_name + version if not specified
diff --git a/src/webdrop_bridge/core/url_converter.py b/src/webdrop_bridge/core/url_converter.py
index 4841dfe..05b127f 100644
--- a/src/webdrop_bridge/core/url_converter.py
+++ b/src/webdrop_bridge/core/url_converter.py
@@ -32,7 +32,7 @@ class URLConverter:
 
         Example:
             >>> converter.convert_url_to_path(
-            ...     "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/file.png"
+            ...     "https://devagravitystg.file.core.windows.net/devagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/file.png"
             ... )
             Path("Z:/aN5PysnXIuRECzcRbvHkjL7g0/file.png")
         """
diff --git a/tests/unit/test_drag_interceptor.py b/tests/unit/test_drag_interceptor.py
index eaa5ce4..74b262e 100644
--- a/tests/unit/test_drag_interceptor.py
+++ b/tests/unit/test_drag_interceptor.py
@@ -19,7 +19,7 @@ def test_config(tmp_path):
         log_file=None,
         allowed_roots=[tmp_path],
         allowed_urls=[],
-        webapp_url="https://wps.agravity.io/",
+        webapp_url="https://dev.agravity.io/",
         url_mappings=[],
         check_file_exists=True,
     )
@@ -135,7 +135,7 @@ class TestDragInterceptorAzureURL:
             webapp_url="https://test.com/",
             url_mappings=[
                 URLMapping(
-                    url_prefix="https://wpsagravitystg.file.core.windows.net/wpsagravitysync/",
+                    url_prefix="https://devagravitystg.file.core.windows.net/devagravitysync/",
                     local_path=str(tmp_path)
                 )
             ],
@@ -144,7 +144,7 @@ class TestDragInterceptorAzureURL:
         interceptor = DragInterceptor(config)
 
         # Azure URL
-        azure_url = "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/test.png"
+        azure_url = "https://devagravitystg.file.core.windows.net/devagravitysync/test.png"
 
         # Mock the drag operation
         with patch("webdrop_bridge.core.drag_interceptor.QDrag") as mock_drag:
diff --git a/tests/unit/test_url_converter.py b/tests/unit/test_url_converter.py
index 60ab58f..1f2a7a3 100644
--- a/tests/unit/test_url_converter.py
+++ b/tests/unit/test_url_converter.py
@@ -18,10 +18,10 @@ def test_config():
         log_file=None,
         allowed_roots=[],
         allowed_urls=[],
-        webapp_url="https://wps.agravity.io/",
+        webapp_url="https://dev.agravity.io/",
         url_mappings=[
             URLMapping(
-                url_prefix="https://wpsagravitystg.file.core.windows.net/wpsagravitysync/",
+                url_prefix="https://devagravitystg.file.core.windows.net/devagravitysync/",
                 local_path="Z:"
             ),
             URLMapping(
@@ -40,7 +40,7 @@ def converter(test_config):
 
 def test_convert_simple_url(converter):
     """Test converting a simple Azure URL to local path."""
-    url = "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/test/file.png"
+    url = "https://devagravitystg.file.core.windows.net/devagravitysync/test/file.png"
     result = converter.convert_url_to_path(url)
     
     assert result is not None
@@ -49,7 +49,7 @@ def test_convert_simple_url(converter):
 
 def test_convert_url_with_special_characters(converter):
     """Test URL with special characters (URL encoded)."""
-    url = "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/folder/file%20with%20spaces.png"
+    url = "https://devagravitystg.file.core.windows.net/devagravitysync/folder/file%20with%20spaces.png"
     result = converter.convert_url_to_path(url)
     
     assert result is not None
@@ -58,7 +58,7 @@ def test_convert_url_with_special_characters(converter):
 
 def test_convert_url_with_subdirectories(converter):
     """Test URL with deep directory structure."""
-    url = "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/subfolder/file.png"
+    url = "https://devagravitystg.file.core.windows.net/devagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/subfolder/file.png"
     result = converter.convert_url_to_path(url)
     
     assert result is not None
@@ -88,7 +88,7 @@ def test_convert_none_url(converter):
 
 def test_is_azure_url_positive(converter):
     """Test recognizing valid Azure URLs."""
-    url = "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/file.png"
+    url = "https://devagravitystg.file.core.windows.net/devagravitysync/file.png"
     assert converter.is_azure_url(url) is True
 
 
@@ -101,7 +101,7 @@ def test_is_azure_url_negative(converter):
 
 def test_multiple_mappings(converter):
     """Test that correct mapping is used for URL."""
-    url1 = "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/file.png"
+    url1 = "https://devagravitystg.file.core.windows.net/devagravitysync/file.png"
     url2 = "https://other.blob.core.windows.net/container/file.png"
     
     result1 = converter.convert_url_to_path(url1)
@@ -133,7 +133,7 @@ def test_url_mapping_adds_trailing_slash():
 
 def test_convert_url_example_from_docs(converter):
     """Test the exact example from documentation."""
-    url = "https://wpsagravitystg.file.core.windows.net/wpsagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/Hintergrund_Agravity.png"
+    url = "https://devagravitystg.file.core.windows.net/devagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/Hintergrund_Agravity.png"
     result = converter.convert_url_to_path(url)
     
     assert result is not None
diff --git a/webapp/index.html b/webapp/index.html
index b675dc3..15bbd3a 100644
--- a/webapp/index.html
+++ b/webapp/index.html
@@ -175,13 +175,13 @@
             <div class="drag-item" draggable="true" id="dragItem3">
                 <div class="icon">☁️</div>
                 <h3>Azure Blob Storage Image</h3>
-                <p id="path3">https://wpsagravitystg.file.core.windows.net/wpsagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/Hintergrund_Agravity.png</p>
+                <p id="path3">https://devagravitystg.file.core.windows.net/devagravitysync/aN5PysnXIuRECzcRbvHkjL7g0/Hintergrund_Agravity.png</p>
             </div>
 
             <div class="drag-item" draggable="true" id="dragItem4">
                 <div class="icon">☁️</div>
                 <h3>Azure Blob Storage Document</h3>
-                <p id="path4">https://wpsagravitystg.file.core.windows.net/wpsagravitysync/test/document.pdf</p>
+                <p id="path4">https://devagravitystg.file.core.windows.net/devagravitysync/test/document.pdf</p>
             </div>
         </div>