How to allow users to add images to an existing node? How to allow users to add images to an existing node without giving them access to the whole node edit page. In Drupal 7 i used the Block Upload Module but it's buggy in the drupal 8 version. Do you have any approaches to get this functionality?
In D8 you can use a form mode for this to assign a reduced node edit page to a specific user role.

See https://www.drupal.org/project/form_mode_control