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Ruby on Ruby on Rails has an awesome gem to upload, store and display images: Active Storage. Active Storage's local disk storage can be used for development and testing purposes. But when you start building more elaborated websites, you'll start noticing the limitations of Active Storage in production. Using Cloudinary and Active Storage allows you to use all its great features while still using Active Storage to upload images. The free plan offers 20,000 monthly transformations, and the free Classic Plan gives you 10GB of storage.