Hello @BentoKO so this happens because Webflow uploads different size and resolution images in different breakpoints to make sure the page loads as fast as possible. However, You can disable this feature so you don’t loose the quality of your original image. Select the image in question, go to settings for the image, and then type Command + Shift + O (on Mac) or Control + Shift + O (on Windows) and a new checkbox should appear in the settings panel
uncheck the box for Responsive Image and publish your site again. I hope this helps!