Yes, hashtags still work, but not the way most advice from a few years ago describes. Back then, hashtags functioned like a browsable feed: people scrolled a tag page looking for content, and a good tag could put you in front of an audience actively searching that topic. That behavior has largely moved to in-app search and algorithmic recommendation instead. Hashtags today mostly function as a classification signal that helps the ranking system understand what your post is about, not a discovery channel people browse directly.
What changed
Every major platform (Instagram, TikTok, LinkedIn) now leans on recommendation systems that look at behavior: watch time, replays, shares, comments, dwell time. Those signals carry far more weight than they used to, and hashtags have been pushed down the list of what determines whether a post gets seen. Meanwhile, in-app search has gotten better, so people increasingly type what they want directly instead of browsing a tag page hoping to stumble on it.
That’s a real shift, not a minor tweak. It means the old advice, stack as many hashtags as the platform allows to maximize the number of tag pages you could show up on, doesn’t map to how these systems work anymore.
What hashtags do now
A hashtag still tells the platform’s system what category or topic a post belongs to. That classification affects who the algorithm considers showing your content to, especially early on before the post has engagement data of its own to go on. A tag that accurately matches your content helps that early classification. A tag that doesn’t match, chosen only because it’s popular, can actually hurt you by pointing the system in the wrong direction.
Some tag pages also still get real browsing traffic, particularly on LinkedIn where people follow specific topic feeds, or in tighter niches where the tag isn’t so huge that it’s meaningless. So hashtags aren’t purely cosmetic even now, they just aren’t the primary lever they once were.
What matters more
A caption or opening line that clearly says what the post is about now carries more classification weight than a hashtag stack. Beyond that, actual engagement (comments, shares, replays, watch time) is what determines distribution on every major platform. No number of hashtags fixes a post that loses viewers in the first two seconds or a caption nobody bothers to read.
What to do instead
Write for the person reading first. Use hashtags as a smaller, supporting layer: a handful of specific, relevant tags rather than a long generic list. Tools like the Instagram hashtag generator or TikTok hashtag generator can help you land on tags that actually match your content instead of ones you’re guessing at, and a hashtag counter keeps you from overdoing it out of habit.