Live data · Official Reddit API

Subreddit Finder

Type your product, niche, or audience and instantly discover the most relevant subreddits to target — ranked by how closely they match your topic.

How to find the right subreddits for your niche

Reddit has over 100,000 active subreddits, but most founders waste time posting in communities that are either too broad, too restrictive about promotion, or simply not where their target audience spends time. Finding the right communities before you post is the single highest-leverage step in any Reddit marketing strategy.

The Subreddit Finder narrows the field instantly. Enter any keyword — your product category, target audience, or core problem — and get a ranked list of communities with a Topic Match Score showing exactly how relevant each one is. No more guesswork, no more wasted posts.

  • Topic Match Score: Each subreddit gets a 0–100% relevance score based on how closely it matches your keywords — so you immediately know which ones to prioritise.
  • Audience Discovery: Find communities where your exact target customer already gathers, discusses problems, and recommends solutions.
  • Competitor Research: Search your competitor's niche to discover the subreddits they're likely appearing in — before they dominate them.
  • Pre-Post Validation: Use the Stats Checker link on any result to check promotion strictness before investing time in content.
  • Sort by Size or Match: Toggle between best-match and largest-community sorting to balance relevance with reach for your campaign goals.

Frequently Asked Questions

Everything you need to know about tracking subreddit stats.

Enter any keyword, topic, or audience description into the search box. Subdude queries Reddit's subreddit search API in real time and returns the most relevant communities. Each result includes a Topic Match Score (0–100%) that measures how closely the subreddit's name, title, and description align with your search term, weighted alongside community size.