Your portfolio is a product, treat it as one
A portfolio that converts treats its visitor like a customer, not an audience.
Every freelancer's portfolio is, structurally, a landing page. It has a hero, social proof, a pitch, and a CTA. We just don't talk about it that way because 'portfolio' sounds more artisan.
Once you accept that, the obvious product questions kick in: who's the visitor, what do they need to feel before they email you, and what's the next action you want them to take? Most portfolios skip the last two.
Three things move the needle reliably: putting one strong piece above the fold, naming the kind of work you want next in plain English, and making the email link impossible to miss. Everything else is taste.
Your portfolio is not a memorial to everything you've made. It's the shortest possible path from 'who is this person?' to 'I should hire them.' Cut accordingly.