How do you build a strong developer portfolio that stands out to recruiters?

I'm preparing for software developer jobs and want to build a portfolio that showcases my skills effectively. I understand that a portfolio is important for demonstrating practical experience, but I'm not sure what projects, technologies, and information recruiters expect to see.

Can someone explain how to build a strong developer portfolio, including the types of projects to include, how to present them, and the best practices for showcasing code, live demos, GitHub repositories, and technical skills? I'd also appreciate tips on common mistakes to avoid and what makes a portfolio stand out during the hiring process.