Keyframes vs Lottie

Keyframes is a free and open-source animation software focused on cut-out style animation. It has simple tools for drawing, animating, and rigging 2D characters for cartoons and other productions. Keyframes makes it easy to create frame-by-frame animations.

Lottie is an open-source animation file format that allows designers to export animations created in After Effects and render them natively on mobile and web. Lottie uses JSON files and Bodymovin to export the animations, allowing them to be lightweight, scalable vector animations.