Midjourney Prompt Generator is a free online tool that assists in writing Midjourney prompts. It supports automatic translation and allows users to select from templates such as 3D rendering miniature models, minimalist line tattoo styles, internet style illustrations, watercolor paintings, and minimalist logo styles, generating corresponding prompts for each template. Moreover, users can choose options for image size, model version, depth of field, quality, and style to quickly generate a high-quality prompt.