How to get author_picture URL from a template? How to get author_picture URL from a template ? I know that I can use {{ author_picture }} to display the picture; however, all I need is the URL and not the picture. I'm trying to get this URL from the template node--article.html.twig

Here is a similar question but this is different because is base on the field_image. Getting the image URL from a field_image on a node and all I'm trying to get is the author picture.
URL FORMATTER module

This module add a url formatter for image field. Then you can output image url directly.

Once enabled, go to your user manage fields, and change the picture field formatter to url.
{{ author_picture }}  // will display url instead of picture

If you are using views, views will give you an option to change the format to url.