How to Find Trending Hashtags Across the Bluesky Network

Bluesky does not have a built-in trending topics panel like Twitter or Mastodon. This makes it hard to discover what hashtags are currently popular across the entire network. Without a dedicated feed, you must use third-party tools, custom feeds, and search tricks to surface trending hashtags. This article explains the specific methods you can use to find trending hashtags on Bluesky, including the best third-party sites and in-app workarounds.

Why Bluesky Lacks a Native Trending Hashtag Feature

Bluesky uses the AT Protocol, which is designed to be decentralized. Each user controls their own data, and there is no central algorithm that aggregates all posts into a single trending list. The network prioritizes custom feeds and user-curated content over algorithmic trends. This means no official trending panel exists in the Bluesky app or website. To find trending hashtags, you must rely on third-party services that query the AT Protocol’s firehose, which is the raw stream of all public posts. These services index every post and count how often each hashtag appears, then present the top results.

Methods to Find Trending Hashtags on Bluesky

Method 1: Use Bluesky Direkt

Bluesky Direkt is a third-party website that scans the entire Bluesky firehose. It updates every 15 minutes and shows the top 50 hashtags from the last 24 hours. This is the most reliable method for a broad view of trending topics.

1. Open Bluesky Direkt in your browser
   Go to bluesky-dir.de on any device. No login is required.
2. View the trending hashtags list
   The homepage displays a table with columns for rank, hashtag name, and post count. Click any hashtag to see a sample of recent posts using that tag.
3. Filter by language or time
   Use the dropdown menus at the top to limit results to English, German, Japanese, or other languages. You can also switch between last 24 hours and last 7 days.

Method 2: Use Bluesky Trending

Bluesky Trending is another third-party site that focuses on real-time hashtag popularity. It shows the growth rate of each hashtag, which helps you spot rising trends before they peak.

1. Navigate to Bluesky Trending
   Go to bluesky-trending.com. The site loads automatically.
2. Sort by volume or growth
   The default view sorts by total post count. Click the Growth column header to sort by percentage increase in the last hour. This reveals rapidly rising hashtags.
3. Click a hashtag to search within Bluesky
   Each hashtag entry has a link that opens the Bluesky app or website with that hashtag pre-searched. This lets you jump directly to the conversation.

Method 3: Search Hashtags Directly in Bluesky

You can search for any hashtag inside Bluesky using the search bar. This method does not show trending data, but it helps you gauge a specific tag’s current activity.

1. Open Bluesky and click the search icon
   The search icon is a magnifying glass in the top-left corner of the web app or at the bottom of the mobile app.
2. Type the hashtag including the hash symbol
   Enter #example and press Enter. Bluesky returns all posts containing that exact hashtag.
3. Check the post count
   Bluesky shows the total number of results at the top of the search page. A high count indicates a trending or popular hashtag. There is no way to see historical trends from this search alone.

Method 4: Create a Custom Feed That Tracks Hashtags

Custom feeds let you aggregate posts that use specific hashtags. This does not show trending data across the whole network, but it helps you monitor one hashtag over time.

1. Open the Feeds tab in Bluesky
   Click the Feeds icon in the left sidebar on web or the bottom menu on mobile.
2. Click the plus icon to create a new feed
   Select Create a custom feed from the menu.
3. Enter the hashtag as the feed source
   In the search box, type #hashtag and press Enter. Give the feed a name and save it. The feed updates automatically with new posts using that tag.

Common Issues When Finding Trending Hashtags

Third-Party Sites Show Incomplete Data

Bluesky Direkt and Bluesky Trending rely on the firehose, but they may miss posts from private accounts or servers that limit public access. This means the trending list might not reflect every user’s view. To get a more complete picture, check both sites and compare their top 10 lists.

Hashtags With Special Characters or Emojis

Bluesky supports hashtags with emojis and non-Latin characters. Third-party sites may not index these correctly. If you search for a hashtag with emojis inside Bluesky, the search works correctly. But third-party trend lists often exclude or misformat these tags. Stick to plain text hashtags for reliable trend tracking.

Trending Data Lags Behind Real-Time Posts

Bluesky Direkt updates every 15 minutes. Bluesky Trending updates every 5 minutes. If a hashtag spikes in a short burst, neither site may capture it until the next refresh. For real-time monitoring, use the Bluesky search function directly and refresh the results manually every few minutes.

Bluesky Trending Tools Comparison

Item	Bluesky Direkt	Bluesky Trending
Data source	AT Protocol firehose	AT Protocol firehose
Update frequency	Every 15 minutes	Every 5 minutes
Time range shown	Last 24 hours or 7 days	Last hour or last 24 hours
Growth rate column	No	Yes
Language filter	Yes	No
Direct link to Bluesky search	Yes	Yes
Requires Bluesky login	No	No

You can now find trending hashtags on Bluesky using third-party sites like Bluesky Direkt and Bluesky Trending. For real-time monitoring, use the in-app search with a specific hashtag. To track a hashtag long-term, create a custom feed that aggregates posts with that tag. As an advanced tip, combine Bluesky Trending’s growth column with Bluesky Direkt’s language filter to spot niche rising topics before they reach the top of the main list.