Free subreddit analyzer, no signup
Pick the subreddits you are considering and the analyzer turns their tracked posting and commenting activity into an hourly heatmap, a 0 to 100 Power Score and the 5 best hours to post, in your own timezone.
Use it to answer one question: is this subreddit worth posting in, and when? If you do not have candidates yet, start with the subreddit finder, then bring your top picks back here.
Pick the subreddits you want to evaluate
Subreddit stats reference
The member count is the least useful number of the set, and Reddit no longer leads with it. These are the stats that decide whether a community is worth posting in.
A subreddit worth marketing in has a real weekly audience, steady weekly contributions (people post and comment, not just read), real comment threads on the average post, a New queue slow enough that your post stays visible, and clearly written self-promotion rules. The analyzer above covers the activity and timing side and rolls it into a Power Score, so you can shortlist quickly before checking the rules by hand. If you have not settled on your niche yet, first find the right subreddits for your product. Also check the hidden karma and account-age bars on the subreddit posting requirements page.
| Subreddit stat | What it tells you | Healthy pattern |
|---|---|---|
| Weekly visitors | How many unique people showed up in the last 7 days. Reddit's replacement for the old member count. | Big enough to matter, focused on your topic |
| Weekly contributions | How many posts and comments the community produced in 7 days. Shows whether people talk or only read. | Daily activity, not a few posts a week |
| Subscribers (legacy) | Total joins over the community's lifetime. A dead community and a busy one can look identical here. | Context only, never the deciding stat |
| Comments per post | Whether posts start conversations or die silently. The best predictor of whether your post gets replies. | Real threads on the average post |
| Posts per day | How fast the New queue turns over. High volume means your post scrolls off in hours. | Your post stays visible for hours |
| Hourly activity heatmap | When the community is awake, in your own timezone. Decides the hour you hit submit. | Post inside the top 5 windows |
| Self-promo tolerance | Not a numeric stat, but the one that gets accounts banned. Read the rules before the metrics. | Check the rules, every time |
These are point-in-time stats. If you want the same numbers week over week, that is a different job: see the subreddit tracker and engagement tool comparison for the options, including alternatives to subredditstats.com. For the rules side of a specific community, the r/SaaS self-promotion rules page shows the format every subreddit profile on MediaFast follows.
Data-driven Reddit marketing
Every subreddit has different peak hours, engagement patterns and content norms. The analyzer gives you the activity data in seconds, so Reddit stops being a gamble.
The same post can get 5 upvotes or 5,000 depending on when you post it. New posts need early votes and replies to climb, so posting while the community is awake gives your content the push it needs. The analyzer shows the top windows for each subreddit.
A focused community where people post and comment daily often outperforms a huge passive one for marketing. What matters is comments per post, weekly contributions and whether the audience shows up. Check those on Reddit itself, then use the heatmap to confirm the community is busy, not just large.
Each subreddit has its own language, humor and norms. Understanding activity patterns before posting keeps your content from feeling out of place and getting downvoted. The data shows when to post and what kind of engagement each community expects.
| What you get | Focused niche subreddit | Huge general subreddit |
|---|---|---|
| Conversation on posts | Replies from people who share the problem | Drive-by comments, if any |
| Self-promo tolerance | Often written and workable | Usually very low |
| Your post visibility | Can stay near the top for hours | Buried quickly by volume |
| Audience fit | Pre-qualified by topic | Broad, mostly not your buyer |
| Conversion potential | High (targeted) | Low (too broad) |
This is a general pattern, not a rule for every pair of communities. Use the analyzer to compare the real activity of the subreddits in your niche.
3-step workflow
Check who shows up, find when they are online, then pick the few communities worth a real presence.
Open the subreddit and compare weekly visitors with weekly contributions, then look at comments on recent posts. A community where people reply to each other is one where your post can start a conversation instead of scrolling past silently.
Every subreddit has peak activity windows based on its audience's timezone and habits. Pick your subreddits in the analyzer above and it ranks the top 5 hours by tracked posting and commenting activity, so the first hour of your post lands while people are online.
Analyze 10 to 15 candidate subreddits, then narrow down to your top 3 to 5 based on activity, audience relevance, and self-promotion tolerance. Focus your energy where the data shows the best engagement-to-effort ratio rather than spreading thin across too many.
Founders who picked the right subreddits
Real posts from founders using MediaFast to plan where and when to post on Reddit.
"Reddit has insane potential for founders. But most posts get removed. Most accounts get banned. Most strategies are guesswork. I've been using @mediafa_st to plan posts, find the right communities, and avoid bans."
"I've never really understood how the algorithms work on Reddit but after using Reddit Fast I finally get it!!"
"Things are going well mate thanks for you product. It helps me to step into reddit very intuitively!"
Reddit changed its stats
Total members and 'online now' are gone from public subreddit pages on new reddit.com and the apps. Here is what replaced them and how to read the new numbers.
Unique people who visited the community in the past 7 days, calculated on a 28-day rolling average. Per Reddit's help center, it leaves out anonymous browsing on the apps and bots, so it reflects people who show up, not people who once pressed Join.
Posts plus comments made in the community in the past 7 days. Removed content is excluded, so a subreddit being flooded with spam that mods clean up does not look busier than it is.
The new stats show on the apps and new reddit.com. Old.reddit.com lost the old counts and does not get the new ones. Moderators can still see member count in Mod Insights for now, though Reddit says that will be removed later too.
Divide weekly contributions by weekly visitors. This is a MediaFast heuristic, not a Reddit metric, and there is no official healthy number. Use it to compare subreddits in the same niche: the one with more contributions per visitor has an audience that replies, which is the audience most likely to respond to your post. A big visitor number with a tiny ratio usually means passive browsers.
Reddit's moderation limits policy calls a community with more than 100K weekly visitors high-traffic, and since March 31, 2026 one person can moderate at most 5 of them. For marketers it is a handy marker: above that line you compete with far more posts for attention, so timing from the heatmap and a tight topic fit matter even more.
Before a human sees your post
A subreddit can look perfect in the stats and still hide your post. These are the moderation tools Reddit documents for communities, and what each means for you.
Uses sitewide signals about the account to hold likely spam before it reaches the community. Listed by Reddit as one of the tools in its guide to keeping spam out.
Uses signals from inside that one community, so a low-history account can be collapsed or filtered even when it has a clean record elsewhere.
Catches accounts that look linked to people already banned from the subreddit. Rotating throwaway accounts into a community is exactly what it is built to stop.
Each community writes its own rules. Per Reddit's AutoModerator guide, removal rules are checked first, and content a moderator has approved is not removed by it. Karma and account-age checks usually live here.
Reddit's rules help page says new and beta communities can have their written rules enforced automatically with an LLM, so rule wording now matters even before a mod looks.
Reddit's karma page notes some communities require a certain amount of karma to post. A healthy subreddit you cannot post in yet is a comment-first subreddit for now.
Reddit's guide for moderators also says promotional content is not inherently spam, and some communities follow the 10% rule. A community with a written promo policy plus a clean account on your side is the combination that gets posts through. Run the shadowban check on your account before you start.
Inside the tool
Each subreddit has patterns that decide whether your content succeeds. The analyzer surfaces them so you can decide with data.
See when a subreddit is most active, hour by hour. The heatmap shows peak posting and commenting windows so you know when to publish. Different subreddits peak at different times based on their audience's timezone and habits.
The analyzer lists the top 5 posting windows for the subreddits you select, ranked by tracked activity. The sweet spot is high activity while your post can still stand out in New.
A 0 to 100 snapshot next to your selection, meant as a fast way to compare a shortlist. Pair it with the heatmap and best-times panels, since those are built directly from each subreddit's tracked activity.
Most Reddit marketers struggle because they choose subreddits by name and size alone. MediaFast pairs this kind of activity data with post drafting, so what you write fits each community's rhythm and culture.
Rough guide
A general pattern across community sizes to keep next to you while you run candidates through the analyzer. Treat it as a starting point, not a verdict.
| Tier | Typical profile | Competition for attention | Marketing value |
|---|---|---|---|
| Mega | Broad topic, well above Reddit's 100K weekly visitors high-traffic line | Very high | Medium |
| Large | Established category community around the high-traffic line | High | High |
| Mid-size | Focused niche with daily posts and comments | Moderate | Best |
| Niche | Small, very specific audience that knows each other | Low | High |
Mid-size, focused subreddits tend to give the best return for marketing effort: enough audience for real reach, engaged enough that a good post gets noticed instead of buried.
The data behind this page
Reddit's total audience is enormous, but most of it sits in a small number of mega communities. That is why the rest need to be judged on activity, not size.
Active subreddits on the platform, with fewer than 500 of them crossing 1 million subscribers each. The rest are the niche, mid-size communities this analyzer is built to evaluate.
Backlinko's Reddit user statsDaily active uniques Reddit reported for Q1 2026, up 17% year over year. Growth spreads across the whole platform, which is why the right subreddit for your niche matters more than the biggest one.
Reddit's Q1 2026 SEC filingShare of US adults who say they use Reddit, up from 18% four years earlier. A growing user base makes picking the right niche subreddit more important than chasing the largest one.
Pew Research's 2025 surveyThe participation split researchers find across large online communities: 90% lurk, 9% contribute occasionally, 1% drive most activity. It is why contributions tell you more than audience size.
Nielsen Norman Group's researchGenerally, I've found more success participating in niche communities. Yes, the broad subreddits generally have a bigger user base, but there are so many comments on each thread that it's hard to stand out.
Finding candidate subreddits and planning posts around them (WordsAtScale, 10 min)
It follows the same shortlist-then-verify workflow this page recommends before you run a community through the analyzer.
Check by hand
Beyond Power Score and posting times, these are the metrics worth checking on Reddit itself before you commit to a subreddit.
| Metric | What it measures | What good looks like | Red flag |
|---|---|---|---|
| Weekly visitors | Unique people who visited in the past 7 days, on a 28-day rolling average (shown by Reddit) | Enough visitors that a good post gets seen, inside a community focused on your topic | A tiny weekly audience, or a huge general one with no niche focus |
| Weekly contributions | Posts and comments in the past 7 days, removed content excluded (shown by Reddit) | Steady posting and commenting every day, not just a handful per week | Very few contributions for the size of the audience: people read but never reply |
| Posts per day | How frequently new content is submitted to the subreddit | New content flows but your post stays visible in New for a few hours | The New queue turns over in minutes, so your post is buried almost at once |
| Avg upvotes | Typical upvote count a post receives in this community | Most posts in New collect some votes, showing a reading, voting audience | The average post gets 1 or 2 upvotes, which points to lurkers, bots or a dead community |
| Comment ratio | Average comments per post; measures conversational depth | Top posts carry real back-and-forth threads, not just one-word replies | Even top posts have almost no comments; the audience is passive |
| Mod strictness | How aggressively posts get removed; proxy for rule enforcement | Clear written rules and predictable enforcement; strict is fine if it is consistent | No visible rules but posts disappear constantly, or no mod activity and chaos in the feed |
| Self-promo allowance | Whether the community permits sharing your own product or content | A weekly showcase thread, a promo flair, or rules that allow it if you add value | Rule 1 bans all promotion, and previous promotional posts sit at zero or get removed |
Interpreting results
Raw numbers need context. These are the questions marketers most often get wrong when reading subreddit data.
No, and this is the most common mistake Reddit marketers make. Larger subreddits have far more competition: posts go live every few minutes and yours can fall off New before many people see it. A focused community with strong engagement will usually drive more qualified traffic and real conversations than a giant one where your post barely registers.
Look for weekly contributions that are healthy for the size of the weekly audience, and for recent posts with real comment threads. That is a community reading and talking, not one full of old joins that never return. Posting frequency is the tiebreaker: if your post can stay visible in New for a few hours, it gets a real window.
Check the rules for explicit bans on self-promotion, links or external content. Then scroll the New queue: if posts from 4 hours ago are still near the top, volume is low and mods have time to review everything. Frequent removals plus a short, prescriptive rule list mean you need to contribute a lot before posting anything that could read as promotional.
A Power Score below 40 usually signals one of three things: the subreddit is growing faster than its engagement (a new, noisy community), the audience is passive (many subscribers, few commenters), or the topic produces strong opinions that lead to downvotes rather than discussion. None of these is automatically disqualifying, but each needs a different strategy than a high-engagement community.
Pattern check
When you evaluate a subreddit for marketing, these patterns predict success, and these predict wasted effort.
Contributions keep pace with visitors. Weekly contributions are healthy for the size of the weekly audience, so the community is real and talking, not a list of dormant joins.
Real threads on the average post. The community reads and responds, so a post that resonates will generate discussion and click-throughs.
Clear, written self-promotion rules. Even strict rules are fine; predictable rules mean you can stay compliant and avoid getting banned.
A New queue that moves slowly enough. Your post stays visible in New long enough to earn its first votes.
Consistent peak hours. Activity concentrates into a few predictable windows each day, so you can time your post for the most early engagement.
Big audience, almost no contributions. Plenty of visitors but very few posts and comments: your post lands in a room of silent readers.
Top posts with no discussion. Upvotes without comments means the audience consumes passively and will not engage with your post either.
Vague or absent rules. No rules often means inconsistent mod behavior; posts get removed without explanation, which makes planning impossible.
Floods of posts in a small niche. Extremely high volume in a small community usually signals spam, bots, or a flooded community that lost genuine members.
Flat activity curve with no peak hours. Engagement is spread evenly or near zero all day, so no timing strategy gives your post an edge.
Decision tree
Run through these before publishing to any subreddit. Each check gives you a clear next action.
Yes: continue to step 2. No: skip it. Check weekly visitors on the subreddit itself; a community almost nobody visits cannot surface your post.
Yes: continue. No: if weekly contributions stay low for the audience size, the community is mostly passive readers and not worth targeting yet.
Yes: your post will stay visible long enough to gain traction; continue. No: only proceed if you can hit a peak window and your title is exceptional.
Yes: continue. No: pivot to a value-first post (question, discussion, lessons learned) with no direct link. If even that is banned, remove this subreddit from your list.
Yes: this is a conversational audience; continue. No: even a successful post will generate little conversation or traffic beyond a few passive upvotes.
Yes: 50 to 79 is a solid candidate, 80 or above is high priority for a consistent presence. No: post once as a test, but do not invest much until you see traction.
Yes: you are ready. Schedule the post for that window and watch how it does in the first hour. No: run the analyzer first. A great community at the wrong hour still wastes a good post.
Yes: post. No: many subreddits use AutoModerator to remove posts from low-karma or new accounts. Comment helpfully first to build history before you post.
Avoid these errors
The patterns that make marketers pick the wrong communities and waste weeks on subreddits that were never going to work.
Choosing by subscriber count alone. The most widespread mistake. Reddit itself stopped leading with total members because a lifetime of joins says little about who shows up today. Compare weekly visitors with weekly contributions instead.
Ignoring posting frequency when reading engagement numbers. A subreddit where every post gets votes sounds promising until you notice it only receives 2 posts per day. Cross-reference votes with post volume and weekly contributions.
Skipping the rules before the first post. Spending an hour on a value-packed post and having it removed at once because you missed a rule like 'no external links on weekdays' is painful and avoidable. Read every rule before you decide a subreddit is worth targeting.
Treating posting time as optional. Most marketers post whenever they finish writing. New posts need early votes and replies to climb, so a post published hours after the community's peak starts at a disadvantage. Check the analyzer's timing data every time.
Spreading across too many subreddits at once. Analyzing 40 subreddits and then trying to be present in all of them divides your effort too thin. Pick 3 to 5 strong communities and build a real presence before expanding.
Confusing a strict subreddit with a bad one. Strict moderation often signals a high-quality, engaged community whose members trust the content more. The mistake is dismissing it instead of adapting your format to its standards.
Glossary
Quick definitions for the terms you will meet most when reading subreddit data, updated for Reddit's new community stats.
Unique people who visited a community in the past 7 days, calculated on a 28-day rolling average. Anonymous browsing on the apps and bots are left out. Shown on new reddit.com and the apps.
Posts plus comments made in a community in the past 7 days. Removed content does not count, so spam floods do not inflate it.
Lifetime joins. It is inflated by dormant and deleted accounts, and Reddit no longer shows it publicly on new reddit.com. Moderators still see it in Mod Insights for now.
Reddit's term in its moderation limits policy for a community with more than 100K weekly visitors.
A score earned when your posts and comments get upvoted. Many subreddits require a minimum before you can post, which works as a spam barrier.
Reddit's configurable moderation bot. Mods use it to remove or filter posts by keyword, account age, karma or link. If your post disappears seconds after posting, AutoModerator is the usual cause.
How much of your activity in a community promotes your own work. Some communities follow the 10% rule: about 10% self-promotion, 90% genuine participation.
This analyzer answers whether a subreddit is worth posting in and when. The subreddit finder answers which subreddits to consider in the first place: describe your product and get 12 matched communities with self-promo tolerance ratings.
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Common questions about subreddit stats, posting times and evaluating communities for marketing.
Our tool pulls tracked posting and commenting activity for each subreddit you select and turns it into an hourly activity heatmap, so you can see when a community is genuinely busy instead of guessing. It also ranks the top 5 posting time windows by activity and shows a Power Score for the communities you select so you can compare a shortlist at a glance before you dig into the charts.
Optimal Posting Time comes from the hourly activity the analyzer tracks for each subreddit you pick. It ranks the hours with the most posting and commenting activity and shows the top 5 windows in your own timezone. Posting while a community is awake gives a new post the best chance of collecting its first votes and replies before it drops down the feed.
No. Reddit itself has moved away from it: communities now show weekly visitors and weekly contributions on new reddit.com and the apps instead of total members. A focused community where people post and comment every day usually beats a huge one where posts get buried in minutes. Check weekly visitors and weekly contributions on the subreddit itself, then use the heatmap and best-times data above to see when that activity happens.
Reddit replaced the public total-members count and the 'online now' number with weekly visitors and weekly contributions. Weekly visitors counts unique people in the past 7 days on a 28-day rolling average, without anonymous app browsing and bots. Weekly contributions counts posts and comments in the past 7 days, without removed content. The new stats are shown on the apps and new reddit.com, not on old.reddit.com.
Yes. Select multiple subreddits from the list and the analyzer will generate combined charts showing activity patterns, best posting times, and a Power Score for all selected communities. This makes it easy to see which subreddits are most active during the same time windows and prioritize where to focus your effort.
The posting time data is based on tracked subreddit activity, meaning when real users post and comment in each community. Reddit activity varies day to day, so treat the top windows as the best odds, not a guarantee. Post inside one of them, then watch how your post does in its first hour and adjust.
Power Score is a 0 to 100 snapshot MediaFast shows for the communities you select. It blends engagement density (how many members are active at peak versus the total subscriber base), posting and commenting volume, and how well the community size fits a marketable sweet spot around 100k members, so it is a fast way to compare a shortlist rather than a full report on its own. For the detailed picture behind it, use the Activity Heatmap and Best Times to Post panels above, both built directly from tracked posting and commenting activity for the subreddits you selected. Shortlist with Power Score, then confirm timing with the heatmap.
No. The Subreddits Analyzer is completely free to use with no signup or login required. Simply select the subreddits you want to analyze and get instant results. For ongoing help planning and drafting posts for those communities, MediaFast offers paid plans.
Find My Subreddits answers 'which subreddits should I post in for my product' by matching your product description to 12 candidate communities. The Subreddits Analyzer answers 'is this subreddit worth posting in, and when': once you have a shortlist, it turns each community's tracked activity into an hourly heatmap and a ranked list of best posting times. Most marketers run the finder first, then the analyzer on the top results.
Reddit's own moderation limits policy defines a high-traffic community as one with more than 100K weekly visitors, and since March 31, 2026 one person can moderate at most 5 of them. It is a useful marker for marketers too: above that line competition for attention is heavier, so timing and fit matter even more.
Search Reddit directly for your competitor's brand name using Reddit's own search or a site search like "site:reddit.com [competitor name]" in Google. Look at which communities their posts and mentions land in organically, then run those same subreddits through the analyzer above to check whether the activity and timing justify targeting them, or whether the mentions are just incidental.
Reddit's Mod Insights are only visible to a subreddit's moderators and cover that one community. The Subreddits Analyzer works the other way around: it is built for marketers evaluating communities from the outside, and it works on public subreddits without needing moderator access, turning tracked posting and commenting activity into an hourly heatmap and best-times ranking you can use for planning.
MediaFast turns your shortlist into rule-aware post drafts timed for each community, which you edit and publish yourself.
No time to do Reddit yourself?
