This product was not featured by Product Hunt yet. It will not be visible on their landing page and won't be ranked (cannot win product of the day regardless of upvotes).
Promptnomicon turns your simple ideas into detailed, model-optimized prompts for Midjourney, Flux, and Stable Diffusion. Each model speaks its own language — what works in Midjourney fails in SD. Promptnomicon knows the difference. Describe what you want to create, pick your model, and get a structured prompt with style, lighting, composition and technical parameters. Includes a free tier and an "Arcane mode" for darker, more atmospheric creations.
Hi Product Hunt! 👋
I'm Bernardo, a solo developer from Spain — and honestly, "developer" is a stretch: Promptnomicon is the first thing I've ever built and shipped. I've served in the Spanish Air Force since 1994, and I built this in my own time, learning to code along the way.
The idea came from my own frustration: I love creating AI art, but I kept getting mediocre results because writing good prompts is genuinely hard — and what works for Midjourney doesn't work for Stable Diffusion or Flux. Each model has its own quirks, syntax, and sweet spots.
So I built the tool I wanted: you describe your idea in plain words, choose your target model, and Promptnomicon crafts a detailed, structured prompt optimized for that specific model. There's also an "Arcane mode" for darker, eldritch-flavored art (the whole app has a grimoire aesthetic — hence the name).
Tech stack for the curious: Next.js 15, MongoDB, Stripe, and Claude + Mistral via OpenRouter, deployed on Railway.
There's a free tier so you can try it without signing up for anything paid. I'd genuinely love your feedback — features you'd want, models you'd like supported, anything that feels off. I'll be here all day answering everything. Thanks for checking it out!
Does Promptnomicon actually understand the style cues that work best for Flux, like aspect ratio hints or seed behavior, or is it mostly reformatting the same prompt across models?
How does the free tier actually work — is there a daily cap on prompts or some kind of watermark on the output, and what unlocks when you move to a paid plan?
Tried it with a quick flux test this morning and was surprised how spot-on the lighting tags were without me having to spell them out. Arcane mode is genuinely fun too.
how well does the free tier actually hold up, like how many prompts a day and is there a watermark or anything on the outputs?
About promptnomicon on Product Hunt
“Turn simple ideas into powerful AI image prompts”
promptnomicon was submitted on Product Hunt and earned 6 upvotes and 9 comments, placing #81 on the daily leaderboard. Promptnomicon turns your simple ideas into detailed, model-optimized prompts for Midjourney, Flux, and Stable Diffusion. Each model speaks its own language — what works in Midjourney fails in SD. Promptnomicon knows the difference. Describe what you want to create, pick your model, and get a structured prompt with style, lighting, composition and technical parameters. Includes a free tier and an "Arcane mode" for darker, more atmospheric creations.
promptnomicon was featured in Productivity (655.7k followers), Art (20.1k followers) and Artificial Intelligence (473.1k followers) on Product Hunt. Together, these topics include over 255.3k products, making this a competitive space to launch in.
Who hunted promptnomicon?
promptnomicon was hunted by Berni. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Berni