DummyJSON vs RoboHash

DummyJSON is a free, keyless REST API that serves realistic placeholder data — products, carts, users, todos, recipes, quotes, posts, and comments — with full CRUD support on every resource (writes simulate success but nothing is persisted). Query parameters cover pagination (limit/skip), field selection, sorting, and full-text search, and a dedicated /auth flow issues real JWTs against its seeded users so frontend teams can exercise login and token-refresh flows without standing up a real backend.

RoboHash turns any string — an email address, IP, username, or filename — into a deterministic robot, monster, human, or cat avatar, so the same input always renders the same image. Six selectable sets (robots, monsters, robot heads, cats, human avatars, gorillas) each support size, background (bgset), and Gravatar-based seeding, and images are served directly from the URL by file extension in PNG, JPG, GIF, or BMP. No signup, key, or request body is required, and outputs are freely embeddable under a CC-BY license.