A portfolio is a collection of works or documents that showcase an individual's skills, achievements, or experiences. It is commonly used by artists, designers, and professionals to present their best work to potential employers or clients. Portfolios can include various formats, such as images, videos, written pieces, or project summaries. In addition to creative fields, portfolios are also valuable in academia and business. For students, a portfolio may contain essays, projects, and grades, while professionals might include reports, presentations, and case studies. Overall, a portfolio serves as a visual resume that highlights a person's capabilities and accomplishments.