direct upload

app/assets/javascripts/admin.js

+//= require activestorage
 //= require jquery3
 //= require jquery_ujs
 //= require notyf/notyf.min

app/assets/javascripts/application.js

+//= require activestorage
 //= require popper
 //= require bootstrap-sprockets
 //= require jquery3

app/views/devise/registrations/edit.html.erb

@@ -28,7 +28,8 @@
       <%= f.input :picture,
                   as: :single_deletable_file,
                   input_html: { accept: '.jpg,.jpeg,.png' },
-                  preview: '200x200' %>
+                  preview: '200x200',
+                  direct_upload: true %>
       <% if devise_mapping.confirmable? && resource.pending_reconfirmation? %>
         <p><%= t(".currently_waiting_confirmation_for_email", email: resource.unconfirmed_email) %></p>
       <% end %>