One line saying what you do and for whom, one line of proof or personality, and one clear next step. The bio is 150 characters and the first is the only one most people read.
Can I use special fonts in my bio?
You can, and it costs you accessibility: those characters are mathematical symbols, and a screen reader announces them one by one. Use them for a word, never for the whole bio.
How many hashtags should a post have?
Between three and eight specific ones. Thirty broad tags now reads as spam, and a tag with ten million posts buries you in seconds — a local tag with ten thousand actually reaches someone.
