diff --git a/file.py b/file.py
index e478490..ea1f218 100644
--- a/file.py
+++ b/file.py
@@ -71,10 +71,10 @@ def thumbnail(input, minSize: int = 600):
     img = cv2.imdecode(np.frombuffer(input, np.uint8), cv2.IMREAD_COLOR)
     height = img.shape[0]  # 图片高度
     width = img.shape[1]  # 图片宽度
-    if height < width:
-        newshape = (int(minSize / width * height), minSize)
-    else:
+    if height > width:
         newshape = (minSize, int(minSize / width * height))
+    else:
+        newshape = (int(minSize / height * width), minSize)
     img = cv2.resize(img, newshape)
     success, encoded_image = cv2.imencode(".webp", img, [cv2.IMWRITE_WEBP_QUALITY, 75])
     return encoded_image.tobytes()
diff --git a/requirements.txt b/requirements.txt
index b7a17c1..fc6c551 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 shortuuid
 flask
-opencv-python
\ No newline at end of file
+opencv-python
+opencv-python-headless
\ No newline at end of file
diff --git a/templates/view.html b/templates/view.html
index 7b0a733..bcd79c1 100644
--- a/templates/view.html
+++ b/templates/view.html
@@ -28,7 +28,7 @@
         img {
             display: block;
             width: 100%;
-            min-height: 300px;
+            min-height: 200px;
             margin-top: 10px;
         }