Most people tag on instinct and have no idea what their habits look like in aggregate. Paste any public blog name to see its most-used tags, average tags per post, untagged posts, and exactly which tags fall past Tumblr's 5-tag search index limit.
Free, instant, and respectful of Tumblr's servers.
Most-used tags, unique tag count, average and median tags per post, and a breakdown of how many posts carried how many tags.
Tumblr indexes only the first 5 tags on a post in public tag search. We show exactly which of your tags fall past that line on every post.
How many tags you use once and never again. Scattered tagging means no tag ever builds enough history to tell you whether it works.
Reads the same public feed as any RSS reader — no login, no Tumblr API key, and responses are cached for 10 minutes to stay polite.
Tumblr lets you add up to 30 tags to a post, which makes it feel like tagging is free. It isn't. Only the first 5 tags are indexed in public tag search — everything after that is invisible to anyone browsing a tag page. Those later tags still work as a personal filing system on your own blog, which is a real use, just not a discovery one.
That makes tag order matter more than tag count. If your five most searchable tags are sitting in positions 8 through 12 behind a string of commentary tags, nobody outside your followers will find the post. This tool shows you, post by post, where that line falls on your own blog.
The other half of the story is which tags actually earn notes — and no free tool can tell you that, because Tumblr doesn't expose note counts to logged-out visitors. See our post on timing for the same argument applied to when you publish.
This tool reads public RSS, so it can show your tagging habits but never the results. Rebloq connects to your own blog and tracks average notes per tag, flags tags that consistently underperform, and recommends the ones worth keeping — across your full post history, not the last 20. 7-day free trial.
Tumblr allows up to 30 tags per post, but only the first 5 are indexed in public tag search. Tags 6 onward only help you organize your own blog — they won't bring in new readers. Most creators are best served by 5 well-chosen discovery tags, plus any organizational tags they want after that.
The order shown here is the order the tags appear in the blog's RSS feed, which reflects the order they were added to the post. If you care about which 5 tags get indexed, put your discovery tags first and your personal or organizational tags last.
Tumblr's public RSS feed only includes the 20 most recent items, and there's no way to reach further back without an authenticated API call. That's enough to see your current habits, but not enough to spot long-term trends. Rebloq's dashboard syncs your full post history for that.
No — note counts aren't in the RSS feed and aren't visible to logged-out visitors. This tool shows which tags you use, not which ones earn engagement. Rebloq's tag intelligence tracks average notes per tag on your own blog, flags underperformers, and recommends tags that consistently do well.
Blog owners can turn on 'Hide from people without an account' under Visibility. When that's on, the public RSS feed isn't accessible and you'll see a 'hidden from logged-out users' error. There's no way around it — it's the blog owner's choice.
Yes, as long as it's public. It's a legitimate way to see how a blog you admire approaches tagging — how many tags they use, whether they repeat a consistent set, and how they order them.
Yes, 140 characters per individual tag. Longer tags get truncated. If any of the analyzed tags exceed it, we flag them.
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