There are separate terms for the API, which seem to indicate to me it's legal to use their API to download user content: https://www.reddit.com/wiki/api-terms h

There are separate terms for the API, which seem to indicate to me it's legal to use their API to download user content: https://www.reddit.com/wiki/api-terms https://www.reddit.com/wiki/api-terms According to these terms, the content is owned by the users, and you're not to modify the content. However, if the content is owned by the users, then IMO Reddit cannot really say what you do or don't do with the content, as long as you're not building an application that acts as a proxy to Reddit. The license is revocable to accessing their API, but they're not licensing you the user content, only the ability to download it. What you can do with that content is likely up to the laws in your jurisdiction. I'd say most content would qualify as public domain, though obviously some content will have copyright protection. I would do the downloading now before they start charging for the API if you're serious about the project.