Field notes
Playbooks, teardowns and the occasional argument — everything we have learned helping creators grow across every major platform.
The advice is everywhere and the reason given for it is usually wrong. There is a real argument for rotating, and it is not the one about being flagged.
A zero-width space occupies a position and draws nothing. Inside a hashtag it makes the tag a different string, so the tag looks perfect and reaches nobody.
The cap and the useful number are different things, and the gap is large. Instagram allows thirty and recommends three to five. Here is every platform's cap and its sensible count.
Most hashtag mistakes cost you one tag. Three of them cost you every tag on the post, and none of the three announce themselves.
This is the one hashtag category that is a matter of published policy rather than rumour. Every network with an inauthentic-engagement rule covers these tags by name.
Copying hashtags out of a screenshot by hand is how most people do this. Here is how to pull them off a public post from its URL, and what the limits are.
A banned hashtag can quietly suppress a post, and no platform tells you. Here is how to test a tag before you use it, in order of likelihood.
LinkedIn has no documented hashtag limit, but three is where the convention settled. Here is why more looks amateur and what they actually do.
TikTok hashtags work as topic signals, not reach multipliers. Here is how many to use, why specific beats popular, and what actually drives the For You page.
Instagram allows 30 hashtags per post. Using all 30 is not a strategy. Here is the number that works, the mix, and where placement actually matters.
Hashtag rules do not transfer between platforms. Here is how many to use, where to put them, and what they actually do on each network.
YouTube shows three hashtags above your title, ignores every hashtag past 60, and may remove over-tagged videos from search. Here is the working number.