How to stop Customizr theme from making duplicates of my images?!?

(Edit: The posts to which the following sentences were referring were removed.
Well, this is not fair. This is a free theme and everybody here gives his support in the spare time. Also every user who needs support needs nikeo.)
Anyway this is the code to prevent the “duplication” (as you call it):

add_action('after_setup_theme', 'remove_custom_thumbnails', 30);
function remove_custom_thumbnails(){
    remove_image_size('tc-rectangular-size'); //or uncheck the proper option
    remove_image_size('tc-thumb');
    remove_image_size('slider-full');
    remove_image_size('slider');
}

If you then don’t want the regina images (@2x), uncheck the proper option in Customize.
You still will have standard wordpress “duplicates”, to get rid of them, google for it.

You misunderstood the post, d4z_c0nf. I didn’t mean to say that nikeo should be here helping everyone with their theme problems. I meant it in a different way. I appreciate all the help I get, especially from you! You’ve helped me a ton, thank you!!

I added the code you provided, but my images are still being duplicated and optimized in the EWWW Image Optimizer plugin. This plugin has an option to view all images that have been optimized and the recent images that I’ve uploaded all have 3 duplicates, also all optimized. I also already turn off the custom image sizes from wordpress. So all duplicates are coming from the theme. Could there be something wrong in the code maybe? Also what are the @2x images you mentioned?

Looking forward to hearing from you, thanks for your help! ??

Hi @d4z_c0nf

I cleared my browser cache and restarted my browser. The code you provided works great! Thank you very much!!! I’m still getting duplicates but it only one per image, and I found the source. It’s a gallery plugin called Envira Gallery. It has an option to resize image for mobile. Thats why i’m still getting duplicates, but only one, better than 4-7. Thanks for all your help @d4z_c0nf!