YouTube
How the YouTube algorithm works
YouTube is won on thumbnail/title click-through-rate and average view duration. Hook retention in the first 30 seconds, keep titles to 40-70 front-loaded characters, and use Shorts as a discovery funnel into long-form.
By Tayyab, Founder
Where these numbers come from. This is the number Content Drifter schedules and formats against. It is our editorial estimate from public reporting and our own publishing, not something the platform announced.
We never present an estimate as something a platform announced. Where we are the source, this page says so.
How the feed is assembled
The signals YouTube weighs when it decides who sees a post, strongest first. Weights are shown against a like, which is the unit everybody has an intuition for.
- Comments2x a like
- Shares and reposts1.5x a like
- Saves1x a like
- Likes1x a like
The first-hour cliff
The single most actionable fact on most networks, and the one almost nobody explains concretely.
120 min
When the outcome is effectively decided
50%
Of your median engagement. Below this, the post has stalled
comments, shares
Signals that matter most in that window
If a YouTube post has not reached 50% of your own median engagement by minute 120, it rarely recovers. That is why the window matters more than the day: a post published into a dead hour has already lost before anybody decides whether it was any good.
Best posting windows
Every hour of the week, as a multiple of a median YouTube hour. On Pro and above we rank your posting slots against this curve and your own posting history; on Free and Starter the queue uses our regional best-time table without the personalised ranking.
FridayStrongest
13:00 to 15:00 UTC
2.25x
vs a median hour
Sunday
11:00 UTC
2.11x
vs a median hour
Thursday
13:00 UTC
2.11x
vs a median hour
Saturday
10:00 UTC
2.11x
vs a median hour
Times are UTC. Content Drifter schedules these in your own timezone.
Link policy
What YouTube does to a post carrying an outbound link, and where we put yours instead.
Allowed
Links in the post body
No penalty
We model no reach cost for links here
in the post body
Where we place your link
Posting cadence and cooldowns
Posting more is not posting better. These are the ceilings the queue applies when it assigns slots, counted against your own calendar rather than UTC.
12h
Minimum gap between posts
2
Maximum posts per day
10
Maximum posts per week
Format mechanics
What YouTube accepts, and which formats carry a reach advantage over a plain post.
Reach by format
- Short+50%
- Thumbnail-optimised upload+20%
- Long-form video0%
Hard limits
- Ideal length
- 40 to 70 characters
- Platform limit (enforced)
- 5000 characters
- Hashtags for reach
- 3 ideal, 5 before it costs you, end of post
- Hashtags allowed
- 15 by the platform
- Images per post
- 0
- Video
- up to 43200s, 262144MB
- Image formats
The first 3 hashtags appear above the title. Put the most relevant one first; extras in the description barely help.
How Content Drifter applies this to your YouTube posts
Each row pairs a number from this page with the thing the product does about it. This is the same record, not a marketing restatement of it.
YouTube engagement peaks around 13:00 to 15:00 UTC on Friday, roughly 2.25x a median hour.
Add a post to the queue without picking a time and it takes the next open peak slot in your timezone, skipping slots already full. On Pro and above those slots are ranked against this curve and your own posting history.
Gold Slot schedulingShort outperforms a plain post by about 50% on YouTube.
Generation targets the formats that carry a lift on the network you are posting to, rather than producing one body and cross-posting it everywhere.
Per-platform publishingYouTube rewards engagement in the first 120 minutes, and a post that starts flat rarely recovers.
On Agency plans with the boost engine switched on, we check the post at the 120 minute mark against your own median, so a stall is something you find out about while it can still be acted on.
The algorithm-aware enginePosting more than 2 times a day, or inside 12 hours of your last post, works against you on YouTube.
The queue honours that spacing when it assigns slots, counting posts you already published as well as ones you have queued, so a bulk import or a busy week cannot bunch your posts together.
The queueYouTube posts land best between 40 and 70 characters, against a platform limit of 5000.
The pre-publish check reads the post against these rules and tells you which one it breaks, rather than handing you a score.
Pre-publish performance read
Recent YouTube algorithm changes
Changes we have recorded and reviewed. Nothing appears here automatically.
We have not published a recorded change for YouTube since our last check. Our canary compares engagement across our whole user base against a 28-day baseline every day, and a shift is reviewed by a person before it appears here, because saying in public that YouTube changed something is a claim about somebody else’s product.
YouTube algorithm questions
What is the best time to post on YouTube?
Our strongest window is 13:00 to 15:00 UTC on Friday, which runs about 2.25x a median hour, followed by 11:00 UTC on Sunday. Those are UTC. Content Drifter converts them to your timezone and schedules into them for you, so the number you are reading is the one it acts on.
What does the YouTube algorithm reward most?
comments carry the most weight, about 2x a like in our model, then shares and reposts at 1.5x. YouTube is won on thumbnail/title click-through-rate and average view duration. Hook retention in the first 30 seconds, keep titles to 40-70 front-loaded characters, and use Shorts as a discovery funnel into long-form.
Do links hurt reach on YouTube?
Not materially. We do not apply a reach penalty for links on YouTube, and we place them in the post body.
How often should I post on YouTube?
We cap at 2 posts a day and 10 a week, with at least 12 hours between posts. The queue applies these when it assigns slots, using your own calendar day rather than UTC, and counts what you have already published as well as what is queued.
Which post format performs best on YouTube?
Short carries the largest lift in our model, roughly 50% above a plain post. Generation targets the format that wins on the network you are publishing to.
How long should a YouTube post be?
Between 40 and 70 characters. YouTube allows up to 5000, which is what we stop you at. Hashtags work best at 3 and start costing you reach above 5, well below the 15 the platform permits.
Every network we publish to
The same page, rendered from the same kind of record, for each of the 9 networks.