Can I hide or change the size of preview images in a widget?


I successfully included a ‘timeline widget’ on my website. Now, from my account I will make some tweets including images.
My question is, can I hide or change the size of the preview images of those tweets, inside the widget? So far I know I can change the background, width, height, link color, tweet limit, header and footer of the widget but, there’s a property that let me change the size of the images inside tweets?

Hope you understand my question (brand new here XD). Thx in advance.