Bluesky Hashtag Generator
RecurPost’s Bluesky Hashtag Generator creates a hashtag set sized for Bluesky posts. Bluesky allows a maximum of 300 characters per post, and every hashtag uses part of that limit. Many hashtag strategies were originally written for Instagram, where captions run up to 2,200 characters, so applying the same approach to Bluesky reduces the space available for your main message and makes the post less effective.
Bluesky Hashtag Generator
Switch Between the Hashtag Generators for Each Platform
Maximum hashtags per post
Up to 30 hashtags per post
Maximum hashtags per post
1-3 hashtags per post
Maximum hashtags per post
Up to 2 hashtags per post
Maximum hashtags per post
2-5 specific tags per post
Maximum hashtags per post
Video tags, not hashtags in description
Maximum hashtags per post
Up to 20 (2-5 recommended hashtags per post)
Maximum hashtags per post
Unverified
Maximum hashtags per post
3 – 5 hashtags per post
Maximum hashtags per post
Up to 8 per post (3-5 recommended)
Maximum hashtags per post
Focus on post copy output instead of tag count
How Many Hashtags Bluesky Allows
Bluesky stores up to 8 tags on a post. This limit comes from the post record itself, which caps the tag list at 8 entries in addition to the hashtags written in the post text.
However, the 300-character limit is usually the bigger constraint. Bluesky counts hashtag characters as part of the same 300-character limit as the rest of the post. In contrast, Instagram allows captions of up to 2,200 characters, so adding a larger group of hashtags has much less impact on the available writing space.
A simple example shows how quickly the limit is reached. If your post uses 220 characters for the main message, only 80 characters remain. A hashtag typically uses around 12 characters, including the # symbol and the following space. As a result, the remaining space is enough for about 6 hashtags, not 15.
- Fit: Treat 8 hashtags as the maximum limit, while using the 300-character limit as your practical guideline.
- Non-fit: Copying an Instagram hashtag block into a Bluesky post. 15 hashtags use roughly 180 characters, leaving fewer than 120 characters for the actual message. As a result, the post becomes difficult to read and may appear as hashtag spam.
RecurPost explains the complete Bluesky posting specifications on its Bluesky post size page.
Use 3 to 5 Hashtags On a Bluesky Post
RecurPost recommends using 3 to 5 hashtags on a Bluesky post. A set of 3 to 5 hashtags typically uses about 36 to 60 characters, leaving roughly 240 characters for your main message. As a result, you can keep the post focused while still adding relevant hashtags.
Although Bluesky allows up to 8 tags, that limit is not a recommendation. Adding hashtags only to reach the maximum can weaken the post’s topic signal while using characters that would be better spent on meaningful content.
Platform
Working hashtag count
What happens past it
Bluesky
3 to 5 hashtags (8 stored max)
Hashtags count toward the 300-character post, so extra tags crowd out the message and read as hashtag spam
Larger hashtag blocks
Captions run up to 2,200 characters, so adding more hashtags has much less impact on the available writing space
For example, a freelancer managing 5 client accounts across Bluesky and Threads can create one saved hashtag set with 5 tags for each client. That same set stays within Bluesky’s character budget while also fitting naturally in a Threads post without requiring a second edit.
- Fit: Use 3 to 5 hashtags that clearly describe the subject, the community, and the format of the post.
- Non-fit: Adding 8 hashtags simply because the limit allows it. A hashtag that does not describe the post adds little value while using around 12 characters that could support the main message instead.
Which Hashtags To Pick for Bluesky
RecurPost’s Bluesky Hashtag Generator creates 3 types of hashtags for each post.
- One hashtag describes the main topic.
- One identifies the community the post belongs to.
- One highlights the format or niche.
This approach helps your post match the way people discover content on Bluesky.
Bluesky allows hashtags to include letters, numbers, and underscores. It also supports multi-word hashtags such as #PhotoOfTheDay, while hashtags containing numbers work without any issue.
Multi-word hashtags
#PhotoOfTheDay
Hashtags with numbers
#Top10Tips
For example, a 3-person agency onboarding a nonprofit client can generate one hashtag set and save it for future use. The client can then reuse the same set across weekly Bluesky posts instead of researching new hashtags for every update.
- Fit: Use community and niche hashtags that already have active custom feeds and engaged subscribers.
- Non-fit: Copying a client’s Instagram hashtag block. Instagram hashtag strategies assume a 2,200-character caption and a ranked discovery surface, whereas Bluesky provides neither.
Bluesky Hashtags Reach People Through Custom Feeds
Bluesky hashtags help people discover posts through custom feeds and tag search. A custom feed is a timeline that any Bluesky user can create, and many of these feeds collect posts based on specific hashtag rules. As a result, if your post includes a hashtag that a feed tracks, it can appear in that feed regardless of your follower count.
Bluesky also makes every hashtag clickable. When someone taps a hashtag, Bluesky opens a feed that displays posts using the same tag, making it easier for people interested in that topic to discover related content.
However, Bluesky does not offer a ranked hashtag recommendation surface like Instagram Explore. Because of this difference, choosing highly relevant hashtags is more important than using broad or high-volume ones. A generic hashtag may place your post in a much larger stream, but it does not improve visibility in the same way it might on tools with algorithmic hashtag ranking.
For example, an agency managing a B2B SaaS client can reach a niche industry feed by using one accurate community hashtag. As a result, the post becomes visible to subscribers of that feed instead of relying only on the client’s 400 followers.
- Fit: Use hashtags that existing community feeds are likely to track.
- Non-fit: Chasing a broad trending hashtag. Bluesky does not provide a ranked discovery surface where larger hashtags receive additional visibility.
How To Use the Bluesky Hashtag Generator
RecurPost’s Bluesky Hashtag Generator is available on this page and does not require a signup. You can generate a Bluesky-ready hashtag set in a few simple steps.
Enter a keyword
Enter a keyword or a short description of your post.
Choose the count
Choose the number of hashtags you want; for Bluesky, keep the set between 3 and 5 hashtags.
Generate the set
Generate the hashtag set.
Copy into your post
Copy the hashtags into your Bluesky post.
For example, a social media manager preparing a client’s product launch can enter the main keyword and generate 4 relevant tags. The manager can then paste both the post and the tags into the RecurPost composer, where the 300-character counter confirms that the post fits before it is added to the publishing calendar.
- Fit: Generate a hashtag set while preparing a post outside the composer or before sending the post to a client for approval.
- Non-fit: Treat the generated hashtag set as the final version. Most agencies maintain an approved hashtag list for each client, so review the generated hashtags against that list before publishing.
Keep One Bluesky Hashtag Rule Across Client Accounts
RecurPost stores approved hashtag groups as saved hashtag sets, called Bags of Tags, so your team can apply a client’s approved hashtags without rebuilding them for every post. As a result, every Bluesky post follows the same tagging standard while reducing manual work.
RecurPost’s composer also lets you customize each platform separately within a single scheduled post. For example, the Bluesky version can include 5 hashtags, while the Instagram version uses a different hashtag group. Both versions are published through the same scheduling action, so you do not need to create separate posts for each platform.
Before a post is scheduled, RecurPost checks the Bluesky version against the 300-character limit in the composer. As a result, an over-tagged draft is identified during writing instead of failing after it reaches the publishing queue.
For agencies managing multiple clients, RecurPost keeps every client in a separate workspace. This separation ensures that one client’s approved hashtag sets never appear in another client’s publishing calendar.
For example, an agency managing 20 client social accounts on the Agency plan can define the Bluesky hashtag rule once for each workspace. A new coordinator joining the team can then publish posts using the approved rule without needing additional instructions.
RecurPost also documents more than 850 platform-specific publishing errors that can prevent posts from being published. If a Bluesky post fails, RecurPost displays the specific reason instead of leaving the post silently in the publishing queue. If you need hashtag suggestions for other platforms, RecurPost also provides them on the hashtag generator page.
- Fit: Agencies and freelancers publishing to Bluesky alongside other platforms from a single content calendar.
- Non-fit: A single user publishing only to Bluesky. One person managing a single workflow may not need saved hashtag sets or separate workspaces.
RecurPost explains the scheduling workflow in more detail on the Bluesky scheduler page.
Using The Same Tags On Threads and X
A Bluesky set on Threads or X
Threads and X both allow more space for post content than Bluesky. As a result, a Bluesky hashtag set with 5 hashtags usually works on either tool without requiring any changes.
A Threads or X block on Bluesky
The opposite is not always true, because a hashtag block created for X or Threads can exceed Bluesky's 300-character limit on its own. RecurPost handles this difference through per-platform post customization: a shorter hashtag set for Bluesky and a different hashtag group for Threads or X, all within the same scheduled post.
Bluesky Hashtag FAQs
How many hashtags can you use on a Bluesky post?
Bluesky stores up to 8 tags in a post record. However, the 300-character post limit usually becomes the main constraint because hashtag characters count toward the same limit as your post text.
Do hashtags count toward Bluesky's 300-character limit?
Yes. Bluesky counts hashtags as part of the 300-character limit. A hashtag typically uses around 12 characters, including the # symbol and the following space, so 5 hashtags use roughly 60 of the available 300 characters.
How many hashtags should you actually use on Bluesky?
RecurPost recommends using 3 to 5 hashtags on a Bluesky post. This range usually uses 36 to 60 characters, leaving about 240 characters for your main message while keeping the post easy to read.
Do hashtags work on Bluesky?
Yes. Bluesky hashtags help people discover posts through custom feeds and hashtag search instead of a ranked recommendation feed. As a result, if a custom feed tracks your hashtag, your post can appear in that feed regardless of your follower count.
Can you use multi-word hashtags on Bluesky?
Yes. Bluesky supports multi-word hashtags as well as hashtags containing numbers and underscores. For example, hashtags such as #PhotoOfTheDay and #Top10Tips appear as clickable tags.
Can you use the same hashtags on Bluesky and Instagram?
A Bluesky hashtag set usually works on Instagram without changes. However, an Instagram hashtag set is less likely to fit on Bluesky because Instagram allows captions of up to 2,200 characters and uses ranked hashtag discovery, while Bluesky limits each post to 300 characters.
Can you schedule Bluesky posts with a saved hashtag set?
Yes. RecurPost lets you schedule Bluesky posts using saved hashtag sets. It stores approved hashtag groups for each client and allows you to customize the Bluesky hashtag set separately from other platforms within the same scheduled post.
Is the Bluesky Hashtag Generator free?
Yes. RecurPost’s Bluesky Hashtag Generator is free to use and works on this page without requiring a signup. However, scheduling the generated post requires a RecurPost account, which starts with a 14-day free trial.
Try RecurPost
RecurPost’s Agency plan supports up to 20 social accounts for $79 per month with no per-user seat charges. The 14-day free trial includes Bluesky scheduling, the composer with 300-character tracking, saved hashtag sets, and per-platform post customization. It also gives you access to RecurPost’s catalog of more than 850 documented publishing errors, helping you identify and fix posting issues before they affect your workflow.
See RecurPost’s plans and pricing page for every plan, add-on, category, and unit price, or start your 14-day free trial with no credit card required.