Hashtag.org Hashtag Metrics provides live analytics for hashtag usage, related tags, popular posts, engagement, and posting hours. The web tool is free to use without logging in, and the same metrics are available in JSON through the `/api/hashtags/<tag>` endpoint. Its directory lets readers browse 1,251,230 measured tags. Usage counts come from Mastodon public tags, trends, and search APIs, while post metrics come from the Bluesky public search API. Mastodon usage counts cover roughly seven days; Bluesky post metrics use the latest sample of posts. Each figure includes its named source and fetch time, and values the service cannot measure appear as a dash. The coverage excludes X, Instagram, and TikTok metrics because those figures are behind paid APIs. The service also describes an auction with public bids through which a hashtag can be claimed as a #name on the hashtag.org network. Hashtag Metrics is available on the web and through an API, making its measurements accessible both for browsing and for use in software.
Who it is for
It suits people who want free hashtag usage and post analytics, including developers who want the same metrics in JSON. It may also help readers browsing measured tags or interested in claiming a hashtag on the hashtag.org network.
What is good
- Free access requires no login.
- Provides hashtag usage, related tags, top posts, engagement, and posting hours.
- JSON endpoint exposes the same metrics.
- Figures include a source and fetch time.
- Directory covers 1,251,230 measured tags.
What to know first
- Metrics for X, Instagram, and TikTok are omitted.
- Mastodon usage counts cover roughly seven days.
- Bluesky post metrics use the latest sample of posts.
Verdict
Choose Hashtag.org Hashtag Metrics for free, source-labelled hashtag data from Mastodon and Bluesky, with a JSON endpoint for developers. Look elsewhere if you need metrics for X, Instagram, or TikTok.
Get started with Hashtag.org Hashtag Metrics
- Open https://hashtag.org/hashtags in a web browser.
- Browse the measured hashtag directory.
- Use the `/api/hashtags/<tag>` endpoint to access metrics as JSON.
What the free plan stops at
The free service omits X, Instagram, and TikTok metrics. Mastodon counts cover roughly seven days, while Bluesky post metrics use the latest sample of posts.
Questions about Hashtag.org Hashtag Metrics
Is Hashtag.org Hashtag Metrics free?
Yes. The listed plan is free, and the page says no login is required.
Which platforms does it support?
It is available on the web and as an API.
Where do the metrics come from?
Mastodon public tags, trends, and search APIs provide usage counts; Bluesky's public search API provides post metrics.
Does it show X, Instagram, or TikTok metrics?
No. Those metrics are omitted because their numbers are behind paid APIs.
Can I use the data in software?
Yes. The same metrics are available as JSON at `/api/hashtags/<tag>`.
Can a hashtag be claimed through hashtag.org?
The page describes claiming a hashtag as a #name on the hashtag.org network through an auction with public bids.
Hashtag.org Hashtag Metrics plans and pricing
All plansCompared on social media hashtag tracking software
- Free plan
- Yes
- Hashtag discovery
- Yes
