Can you use wall primer instead of gesso?

While wall primer and gesso serve similar purposes in preparing surfaces for paint, they are not interchangeable. Gesso is specifically designed for use on canvas and provides a flexible, absorbent ground that enhances paint adhesion and allows for better blending. Wall primer, on the other hand, is formulated for drywall and may not adhere well to canvas or other artistic surfaces, potentially affecting the final artwork's quality. It's best to use gesso for art projects to ensure optimal results.