JSON files are an excellent addition to web pages that allows creators the opportunity to control, fine-tune, and minimize their animation file sizes. Thanks to Bodymovin, you can export JSON files straight from the Bodymovin plugin.
The full article: https://www.halftone.digital/blog-posts/json-exporting-from-after-effects
And for even more on JSONs: https://www.halftone.digital/blog-posts/myths-tips-and-json-tricks