What is a hashtag?
A hashtag is a word or phrase after a # symbol, such as #coffeelover, that groups posts on the same topic so people can find them by searching or following the tag.
Why it matters
Specific hashtags help new people discover your posts. A few relevant tags usually work better than many broad ones, and some platforms limit how many you can use.
Example
A Karachi bakery might use #karachifood and #karachibakery rather than a generic #food.