radpanic 
never big enough
The Derpibooru uploader doesn’t play nice with DeviantArt’s back-end any more. If you just paste the DA URL into the uploader, the scraper grabs the low-res preview image instead of the full-res image. So to get the full-res version on Derpi, you have to download it from DA, then upload it here from your computer. Unless you’re the original artist (if so, hi!) in which case you can skip the download step, of course.