Think of your portfolio as a movie trailer
Your goal is to spark interest for a conversation, not explain everything.
Your portfolio is not meant to show everything you did. It should create enough interest for someone to want to talk to you. People reviewing portfolios are deciding if you're worth a conversation, not trying to understand everything about you and your work.
Think of it like a trailer and a movie. The trailer gets people interested. The movie tells the full story. Your portfolio is the trailer. The interview is where you go deeper into your process and decisions.
A good example of this is Daniel Kusaka's portfolio. His projects use minimal text, but still provide enough context to understand the work. The way the projects are presented, along with his About page, makes his personality and level of craft very clear. That quickly grabs attention and makes you want to learn more about how he thinks and works.