Radiant is a free minimal Tumblr theme which comes with a layout with detailed attention to content and images. You can display your full-width brand image on your header and also display high quality featured posts in a bold way. This theme works perfectly on any device browser. You can even easily customize the text color, background, font options, etc. This theme comes with the option in the footer area to show or hide your Instagram images. You can also add your Instagram tweets in the footer area. Not to mention, with this theme, you can grab the attention of your readers with a sticky post at the top.