TeePublic is an online marketplace for graphic apparel and designs, bringing together products created by third-party designers and artists. Shoppers can browse a wide range of themes and collections, including categories such as animals, anime, food, movies, sports, and vintage, or search for a particular topic. The catalogue includes T-shirts, hoodies, long-sleeve shirts, crewneck sweatshirts, and other apparel, with options such as classic, heavyweight, tri-blend, streetwear, premium, vintage, tall, active, and V-neck styles.

Product pages provide details including available sizes, fabric information, and care-related guidance. Customers can create an account to save favorite designs, and the site offers a newsletter with sales and other updates. TeePublic also provides customer support resources for order status, shipping, returns, refunds, and exchanges; its page states that free exchanges are available.

The platform invites artists to sign up and offers resources for designers, alongside featured artist collections and new design listings. It presents itself as a place to discover and purchase distinctive, artist-created designs on everyday clothing