#399

backend/app/models/post.rb

@@ -15,9 +15,7 @@ class Post < ApplicationRecord
   def self.resized_thumbnail_attachment(upload)
     upload.rewind
     image = MiniMagick::Image.read(upload.read)
-    image.resize '180x180^'
-    image.gravity 'Center'
-    image.extent '180x180'
+    image.resize '180x180'
     image.format 'jpg'
 
     { io: StringIO.new(image.to_blob),