PostEaseThe short answer
TikTok’s For You feed recommends each video on how people react to it, not on who posted it. TikTok’s own explanation names three groups of signals: how people interact with videos (likes, shares, comments, follows, what they watch), information about the video (captions, sounds, hashtags), and device and account settings, which carry the least weight. The strongest single sign it names is a viewer finishing a longer video from beginning to end.
TikTok also says that follower count, and whether an account has had hits before, are not direct factors. A new account’s video is judged on the same terms as anyone’s: shown to some people, and shown to more if those people watch and react.
What TikTok says it uses
TikTok has not published weights for each signal, but it has said which are strong and which are weak.
| Signal group | What it includes | How much it counts |
|---|---|---|
| How people interact | Videos liked, shared, commented on and watched; accounts followed; videos created | Strong; finishing a longer video is named as a strong sign |
| Information about the video | Captions, sounds, hashtags | Used to find who a video is for |
| Device and account settings | Language, country, device type | Lower weight than the others |
| Follower count and past hits | How big the account is, and whether it went viral before | Not a direct factor |
Finishing a video is the strongest sign
TikTok’s example of a strong signal is a viewer watching a longer video from beginning to end. Buffer’s 2025 guide to the algorithm calls watch time perhaps the most important engagement signal. The practical consequence is that a video is ranked on whether people stay, more than on whether they tap a heart.
That changes how to edit. Cut the slow opening, put the payoff where a viewer can see it coming, and make the video as long as its content and no longer. A tight video people finish sends a stronger signal than a long one they leave halfway.
Why a new account can go viral
Because follower count is not a direct factor, every video starts from its own viewers’ reactions. That is why a first video sometimes outperforms everything an established account posts that week, and why an account with a million followers can post a video almost nobody sees. Each video earns its own reach.
It also means one quiet video says little about the account. Buffer’s study of 11.4 million TikToks found the typical video gets about the same views at any posting frequency; posting more mainly adds chances for one video to take off.
Words tell TikTok who a video is for
Captions, sounds and hashtags are the “information about the video” TikTok uses to place it. Buffer’s guide suggests choosing two or three keywords that describe the video and using them in the caption, in the video details and in the text on screen, so the words a viewer would search for appear where TikTok reads them.
Variety is built in
TikTok says the For You feed generally will not show two videos in a row with the same sound or from the same creator, and avoids duplicated content and videos a person has already seen. A viewer who long-presses and taps “Not interested” shapes what they see next. For creators, this is a reason to post original videos rather than near-copies of the last one.
Viewers can steer it too
Viewers have direct controls as well as the signals TikTok reads from their watching. With Manage Topics, announced in June 2025, people choose to see more or less of over 10 popular topics, such as Creative Arts, Travel, Nature and Sports; TikTok says this changes how often a topic is recommended without removing it. Smart Keyword Filters, announced at the same time, help people keep content they do not want out of their recommendations. And a viewer can refresh the For You feed entirely from Content Preferences: TikTok then shows popular content and rebuilds recommendations from how they react, changing only the For You feed.
What costs a post reach
The habits that cost reach on TikTok follow from what TikTok says it uses. A slow opening loses the viewers whose finishing is the strongest sign. Vague captions, with no words a viewer would search for, leave TikTok guessing who the video is for. And TikTok says the For You feed avoids duplicated content and videos a person has already seen, so reposting the same video adds little.
Questions
Does follower count matter on TikTok?
Not directly. TikTok says neither follower count nor past high-performing videos are direct factors in For You recommendations. Larger accounts may still get more views because more people follow and interact with them.
What matters most to the TikTok algorithm?
How viewers react to the video, with watching to the end the strongest sign TikTok names. Shares, comments, likes and follows count too. Device and account settings count least.
Do hashtags matter on TikTok?
They are part of the video information TikTok uses to work out who a video is for, alongside captions and sounds. Use a few that describe the video rather than many broad ones.
What does TikTok show someone who just joined?
TikTok says it may invite new users to pick categories of interest, such as pets or travel, and shows those who do not pick a general feed of popular videos, then learns from what they watch.
How do viewers tell TikTok what they do not want?
By long-pressing a video and tapping “Not interested”, or hiding videos from a creator or a sound. TikTok uses that to shape what they see next.
Does posting more help on TikTok?
It adds views, by giving more videos a chance. Buffer’s study of 11.4 million TikToks found up to 17% more views per post at two to five a week than at one, while the typical video’s views stayed about the same.
Why did my TikTok get views and then stop?
Each video is shown to more people only while its viewers keep watching and reacting. When a new group of viewers reacts less, it stops spreading. That is normal, and says more about that video than about your account.
Sources
- TikTok, TikTok Trending Summer 2025 and new ways to shape your feed, June 2025.
- TikTok, Refresh your For You feed, checked October 2026.
- TikTok, How TikTok recommends videos #ForYou, June 2020.
- Buffer, TikTok algorithm guide, December 2025.
- Buffer, How often should you post on TikTok? Data from 11 million+ posts, October 2025.