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Hashtag.org Hashtag Metrics

hashtag.org

Free plan WebAPI
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Spec score 7.5 #17 of 27 in Social Media Hashtag Tracking Software

What it is

Hashtag.org Hashtag Metrics is a free web and API service for live hashtag usage, related tags, top posts, engagement and posting hours. No login is required, and the directory offers browsing across 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 counts cover roughly seven days; Bluesky metrics use the latest sample of posts. Every figure includes a named source and fetch time, while values that cannot be measured appear as a dash. Metrics for X, Instagram and TikTok are omitted because their numbers are behind paid APIs. The same measurements are available as JSON at `/api/hashtags/`. The service also describes an auction with public bids for claiming a hashtag as a #name on the hashtag.org network. The free plan costs nothing.

Spec sheet

Purpose
Hashtag Metrics provides live analytics for hashtag usage, related tags, top posts, engagement and posting hours.Read 8 Oct 2026 · hashtag.org
Headquarters
Cocorná, Antioquia, ColombiaRead 28 Sep 2026 · hashtag.org
Access
The page says the tool is free and requires no login.Read 8 Oct 2026 · hashtag.org
Coverage limits
Metrics for X, Instagram and TikTok are omitted because their numbers are behind paid APIs.Read 8 Oct 2026 · hashtag.org
Data sources
Usage counts come from Mastodon public tags, trends and search APIs, while post metrics come from the Bluesky public search API.Read 8 Oct 2026 · hashtag.org
Developer access
The same metrics are available as JSON at the `/api/hashtags/<tag>` endpoint.Read 8 Oct 2026 · hashtag.org
Directory
The page offers browsing across 1,251,230 measured tags.Read 8 Oct 2026 · hashtag.org
Measurement window
Mastodon usage counts cover a roughly seven-day window, and Bluesky post metrics use the latest sample of posts.Read 8 Oct 2026 · hashtag.org
Metric transparency
The page says every figure includes a named source and fetch time, and unmeasurable values display as a dash.Read 8 Oct 2026 · hashtag.org
Related promotion
The page says a hashtag can be claimed as a #name on the hashtag.org network through an auction with public bids.Read 8 Oct 2026 · hashtag.org

Plans and prices

Hashtag Metrics Free No login · no estimates · X, Instagram and TikTok metrics not shown Read 8 Oct 2026 · hashtag.org

Every Hashtag.org Hashtag Metrics plan and price →

Strong points and limits

Strong points

  • No login required
  • Free web access and API
  • Named source and fetch time per figure
  • Over 1.2 million measured tags
  • Unmeasurable values shown as dashes

Limits

  • X, Instagram and TikTok metrics omitted
  • Mastodon counts cover roughly seven days
  • Bluesky data uses the latest sample

Who it suits

Hashtag Metrics suits people browsing hashtag performance or developers retrieving those measurements through JSON. It is useful when Mastodon and Bluesky data meet your needs.

Verdict

Hashtag.org provides clearly sourced hashtag measurements through a directory and API at no cost. Its coverage is limited to the listed public sources and windows.

Where Specifiction places it

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