@jRausell
This is a tool for BlueSky. You can add a nice gradient background to your images directly from the post. Just click the new image icon, load the image, and make your images more cachy with a gradient background without leaving BlueSky. Yo can use the X/Twitter version here: https://chromewebstore.google.com/detail/x-image-bg-gradient/pbgamjjjpfmgnjooaelkmjkfoohoikpi