Ruby gem created by Janko Marohnić offering a functional image-processing API (source image in → processed file out). Generates ImageMagick/mini_magick commands that include web-specific extras like auto-rotation and post-resize sharpening. Ships a libvips backend that shares as much of the same interface as mini_magick as possible — benchmarks on a 500×500 thumbnail showed libvips was 3–5× faster than ImageMagick depending on source size. Adopted by Active Storage in Rails 6.0. A Q&A attendee asked about adding imageflow as an additional backend; Janko would like to once Ruby bindings exist.