Question: Is there a web interface that uses AI to produce realistic images quickly and securely?

One good option is getimg.ai, which offers a broad AI image creation and editing foundation. It includes an AI Generator for generating new images based on text prompts, along with tools to edit existing images, turn images into videos and train your own AI models. The service also includes AI Canvas for image upsizing, an Image Editor for fine tuning, and DreamBooth for training your own AI models. It can generate high-resolution images and offers a range of community-trained AI models, so it's good for architecture, art and other uses.

Another option is Leonardo, geared for creators and developers who need high-quality, consistent visual assets. Leonardo has options for image generation, AI Canvas editing and 3D texture generation. It can generate images in a variety of styles from anime to photorealism, and is good for character design, game assets and concept art. The service has a free tier with a daily token limit, and paid subscriptions for faster image generation and premium features.

If you want something more all-purpose, Enhance AI is a good option for generating realistic images from text prompts and editing existing images. It's got features like image upscaling and custom styles, so you can automate your image generation and editing workflow. It's got flexible pricing options and commercial use is allowed, so it's good for beginners and pros.

Last is ComfyUI, a free, web-based interface for creating Stable Diffusion workflows without installation. It can generate high-quality, photorealistic images from text prompts and doesn't store or share images, so it's private. It's fast at generating images and offers unlimited use with no input limits, so it's good for creative projects.