Compress images of AWS S3

Hello,

I am keeping all the images on S3. I just want to compress all those S3 images. I’m uploading images on S3 directly without keeping them in the uploads folder. I guess this plugin can optimize S3 images only if I keep images in the uploads folder as well. So I have downloaded few images from the S3 and put them in uploads folder to make sure that works. Then I visit Bulk Optimization page, which says that “Your entire library is optimized!”. How come that? I’m 100% sure that there are unoptimized images there in the uploads folder. So what am I doing wrong or what can I do to achieve what I want?

Thanks