!!Help!! Image slider resizes my images and they now have really low resolution

Hi there,

I’ve been struggling with the quality of the images in my slider. The slider is not our theme slider, it’s the one added by inserting shortcode inside the page content part. Since it’s the shortcode, I dont think it’s Terrifico’s issue but I seriously have been googling for hours trying to figure this out on my own and I really really can’t find anything. No matter how good quality the images I upload have, the slider ALWAYS show me images with really low resolution. I tried different file formats, different pixels and image sizes, and also made the pixels to match the slider width & height – nothing helped.

This is the code:
src=”https://i0.wp.com/conscinista.com/wp-content/uploads/2016/05/slider-1.jpg?resize=600%2C300″

If I already made the image 600 x 300 pixels, there shouldn’t be any resizing needed. What did I do wrong? The images look really AWFUL! Can someone please help?

Thank you so very much,
Audrey