Bluesky
How the Bluesky algorithm works
Bluesky is chronological with custom feeds and no algorithmic boost to game, so timing and reposts drive discovery. Post during active hours, be genuinely useful, and put links in the body. They are not penalized like on X.
By Tayyab, Founder
Where these numbers come from. These are the numbers Content Drifter schedules and formats Bluesky posts against. They are our editorial estimate from public reporting and our own publishing, not something Bluesky announced.
How the feed is assembled
In our Bluesky model, shares and reposts, comments and replies each count for 4 likes. Bars show multiples of a like.
- Shares and reposts4x a like
- Comments4x a like
- Replies4x a like
- Likes1x a like
The first-hour cliff
Bluesky is checked 45 minutes after a post goes out, 15 minutes before the first hour ends.
45 min
Check point
40%
Stall line vs your median
Replies, shares
Signals read
Our model treats a post below 40% of your own median engagement by then as stalled. Replies and shares count most in that window.
Best posting windows
Our Bluesky curve has 5 posting windows across 5 days, led by Monday 08:00 to 10:00 UTC at 1.97x a median hour. Sunday and Saturday have none.
MondayStrongest
08:00 to 10:00 UTC
1.97x
Tuesday
09:00 to 11:00 UTC
1.97x
Thursday
08:00 to 10:00 UTC
1.97x
Wednesday
11:00 UTC
1.84x
Friday
10:00 UTC
1.84x
Times are UTC. Each figure is a multiple of a median hour.
Link policy
A link in the Bluesky body carries no modelled reach cost, so yours stays in the post body.
Allowed
In the post body
No penalty
Modelled reach cost
In the post body
Where yours goes
Posting cadence and cooldowns
The queue holds Bluesky to 8 posts a day and 40 a week, at least 1 hour apart. Seven days at the daily ceiling would be 56, so the weekly cap of 40 is the one that binds.
1h
Minimum gap
8
Posts per day, max
40
Posts per week, max
Format mechanics
Single image leads on Bluesky in our profile, at +20% against a plain post, ahead of thread (+10%).
Reach by format
- Single image+20%
- Thread+10%
- Standard post0%
Hard limits
- Formats we publish
- Post and Carousel
- Ideal length
- 100 to 250 characters
- Platform limit (enforced)
- 300 characters
- Hashtags for reach
- 1 ideal, 3 before it costs you, inline
- Hashtags allowed
- 5 by the platform
- Images per post
- 4
- Video
- up to 180s, 100MB
- Image formats
- jpeg, png, webp
Hashtags are clickable inline links on Bluesky. 1-3 is plenty; they aid topic discovery but there is no algorithmic tag boost.
How Content Drifter applies this to your Bluesky posts
Each row pairs one of the Bluesky numbers above with what the product does about it.
Bluesky engagement peaks around 08:00 to 10:00 UTC on Monday, roughly 1.97x a median hour.
An unscheduled post takes the next open peak slot in your timezone. On Pro and up those slots are ranked against this curve and your own posting history.
Best time to post schedulingSingle image outperforms a plain post by about 20% on Bluesky.
Generation writes for the formats that carry a lift on Bluesky, not one body cross-posted everywhere.
Per-platform publishingOn Bluesky, a post below 40% of your median engagement at minute 45 is read as stalled in our model.
On Business and Agency plans with the boost engine switched on, we run that check at minute 45 against your own median, so a stall surfaces while it can still be acted on.
The algorithm-aware enginePosting more than 8 times a day, or inside 1 hour of your last post, works against you on Bluesky.
The queue honours that spacing when it assigns slots, counting posts you already published as well as ones you have queued.
The queueBluesky posts land best between 100 and 250 characters, against a platform limit of 300.
The pre-publish check names the rule a post breaks instead of handing you a score.
Pre-publish performance read
Recent Bluesky algorithm changes
Only changes a person has reviewed appear here.
We have not published a recorded change for Bluesky since our last check. A person reviews every shift our daily canary flags before it appears here. How we watch for changes.
Bluesky algorithm questions
What is the best time to post on Bluesky?
Our strongest Bluesky window is 08:00 to 10:00 UTC on Monday, about 1.97x a median hour, then 09:00 to 11:00 UTC on Tuesday. Times are UTC, and the queue converts them to your timezone.
What does the Bluesky algorithm reward most?
Shares and reposts carry the most weight, about 4x a like in our model, then comments at 4x and replies at 4x. Bluesky is chronological with custom feeds and no algorithmic boost to game, so timing and reposts drive discovery. Post during active hours, be genuinely useful, and put links in the body. They are not penalized like on X.
Do links hurt reach on Bluesky?
No. A link in the Bluesky body carries no modelled reach cost, so yours stays in the post body.
How often should I post on Bluesky?
The queue holds Bluesky to 8 posts a day and 40 a week, at least 1 hour apart. Seven days at the daily ceiling would be 56, so the weekly cap of 40 is the one that binds. The queue applies those caps on your own calendar day, not UTC.
Which post format performs best on Bluesky?
Single image carries the largest lift on Bluesky in our model, roughly 20% above a plain post, ahead of thread at 10%.
How long should a Bluesky post be?
Between 100 and 250 characters; Bluesky allows 300, which is where we stop you. Hashtags work best at 1 and start costing reach above 3; the publisher accepts up to 5.
How soon can I tell if a post is working on Bluesky?
Minute 45. Our model reads a post below 40% of your own median engagement at that point as stalled, and replies and shares count most.
Every network we publish to
One record, one page, for each of the 9 networks.