Welcome to Nebula
Nebula is Neptune's AI vision engine — a tool that transforms any image or text description into a Master Prompt: a comprehensive, expert-level prompt ready for any generative AI model.
Ready in 10 seconds
No setup. No API keys. Just open the studio and start creating.
Open Nebula StudioWhat is Nebula?
Nebula solves the hardest part of generative AI: prompting. Even with the most advanced image generation models, getting the output you envision requires precise, technical prompts — describing lighting, composition, style, camera settings, and countless other details.
Nebula automates this entirely. Show it what you want (via image or description), and it produces a battle-tested prompt ready for Midjourney, DALL-E 3, Stable Diffusion, Flux, or any other model.
Core Features
Vision Analysis
Drop any image and Nebula's AI will deeply analyze its composition, lighting, style, and mood to reverse-engineer the perfect generative prompt.
Instant Generation
Get comprehensive, detailed prompts in seconds. No prompt engineering expertise required — Nebula handles the complexity for you.
Community Sharing
Share your best prompts with the Neptune community. Discover creative prompts from creators around the world.
Private History
All your generated prompts are saved privately. Sign in to sync across devices and access your full creation history.