diff --git a/blueprints/api.py b/blueprints/api.py
index 205b1de..f810614 100644
--- a/blueprints/api.py
+++ b/blueprints/api.py
@@ -98,7 +98,7 @@ def generate():
                 "prompt": prompt,
                 "model": model_value,
                 "images": [{"image_url": img} for img in image_data],
-                "size": data.get("size") or "2160x3840",
+                "size": data.get("size") or "2048x2048",
                 "quality": "high",
                 "output_format": "png",
             }
diff --git a/static/js/main.js b/static/js/main.js
index 60fb028..5b577d2 100644
--- a/static/js/main.js
+++ b/static/js/main.js
@@ -484,7 +484,7 @@ function updateSizeOptions() {
     fillSelect('sizeSelect', nextSizes);
 
     if (selectedModel === GPT_IMAGE_EDIT_MODEL) {
-        sizeSelect.value = '2160x3840';
+        sizeSelect.value = '2048x2048';
     } else if (nextSizes.some(item => item.value === previousValue)) {
         sizeSelect.value = previousValue;
     }
diff --git a/templates/mobile.html b/templates/mobile.html
index 84b548e..88b2870 100644
--- a/templates/mobile.html
+++ b/templates/mobile.html
@@ -475,7 +475,7 @@
                 const nextSizes = selectedModel === GPT_IMAGE_EDIT_MODEL ? GPT_IMAGE_EDIT_SIZES : defaultSizeOptions;
                 fillSelect('sizeSelect', nextSizes);
                 if (selectedModel === GPT_IMAGE_EDIT_MODEL) {
-                    sizeSelect.value = '2160x3840';
+                    sizeSelect.value = '2048x2048';
                 } else if (nextSizes.some(item => item.value === previousValue)) {
                     sizeSelect.value = previousValue;
                 }