Is it possible to build a custom popup image gallery?

For the moment, what we have in our backend is a smart action for uploading files in S3 bucket. What we want is to be able when clicking to the upload button to have a custom popup that will be populated with some files existing in S3 bucket, so the user can choose the file to upload.
Is there any way to do that ?

Hey @Joel_Alexandre_Khang,

I’m not sure to understand your usecase. Are you looking for the File Picker ?