There are several free AI image generators that do not require users to sign up or log in. One such option is Perchance AI Image Generator, which is considered one of the best overall AI image generators without a login. It uses stable diffusion to create photorealistic images from text descriptions, and can generate portraits or full-body images in various styles. Another option is Dreamify, a free AI image generator that uses stable diffusion to create images from text descriptions. Dreamify is used by thousands of users and does not require a sign-up. It also does not add watermarks to the generated images. Additionally, Canva's Magic Media app allows users to create AI-generated images without signing up, and it offers several AI image generators such as DALLE by OpenAI and Imagen by Google Cloud.
Another option is Hotpot.ai, which uses AI to create attractive art pictures and images from a few words. It offers a range of art styles and also allows users to personalize anime characters. Visme is another great option, it not only offers AI image generation but also provides full content authoring and visual design tools. Another free AI image generator is Dream by Wombo, it offers a range of art styles and users don't need to sign up or create an account, simply type in a prompt and select an art style. Some of the styles include anime, surreal, line art, Ghibli and more. Lastly, Kapwing also offers a free AI image generator that is powered by OpenAI's DALLE-2 and allows users to create images from text descriptions without signing up.