Subreddits, Posts and Votes: How Reddit Data Is Organized
A Reddit scraper has to follow the way Reddit itself is built: around communities rather than people. Each subreddit, from r/buildapcsales to r/SkincareAddiction, is created and run by volunteer moderators who write its rules, set its post flair and decide what may be posted. As of June 2026 Reddit reports more than 100,000 active communities and over 130 million daily active uniques.
Communities come in four types. Public ones are open to read, restricted ones are open to read but limit who may post or comment, and private and premium-only communities stay closed to visitors. Communities labeled Mature (18+) sit behind sign-in and an age check, and quarantined ones behind an explicit opt-in.
Inside a community every post has a short base-36 ID with the t3_ prefix and an address of the form /r/community/comments/ID/title/; every comment has its own t1_ ID and a permalink under its post, and the subreddit itself has a t5_ ID. A post can be text, a link, images or a gallery, a video, a poll or a repost of another community's post, and each carries a title, a vote score, an upvote ratio and a comment count. Comments nest into reply trees of any depth. Feeds sort by Best, Hot, New, Top and Rising, with Top limited to the past hour, day, week, month, year or all time, and comment sections sort by Best, Top, New, Controversial, Old or Q&A.
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