DRUPAL 7: insert images via URL instead of via "file-upload" My boss asked me to edit an existing page (in which is already possible insert text and images) in order to be able to insert images not only by uploading them from local pc but also via Remote URL.

My version is 7.31 and is already installed "File Field Sources" module that SHOULD be the most useful to achieve desired behaviour.

My questions are:


After entered in Edit Mode of a specific page, how to verify
which module is actually used to manage images uploads? 
In case that it is already "File Field Sources", how to configure it to
be able to put remote URL?


Thanks
I guess you are having problem to use the module File Field Sources. 

Use below steps


Download and install the module 
Edit any image field, for ex. Article content type is having image field. Let's use this module over there. 
Go to URL : admin/structure/types/manage/article/fields
Edit the field field_image 
Check the option to use remote URL there. See screenshot. 
Create article content and see there option to use remote URL in image field. See attachment.