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keyline
Turn your references into a direction any AI can follow
Drop in the references you already collect. keyline composes them into a board, measures what they share (palette, contrast, format, light) and writes the direction down as language. One direction, compiled for ChatGPT, Claude, Midjourney or any image model.
Hi, I am Marcos, the maker.
I spent 25 years in design, the last ten leading product design teams. The thing that never got easier was the handoff of taste. A designer collects references, knows exactly what the direction is, and then has to explain it again to every colleague, every agency and now every AI model. The references were the direction. The explaining was the waste.
So I built keyline for my own team. You drop the references in, it composes them into a board, measures what they actually share, palette, contrast, format, light, and writes the direction down in plain language. From that one text it compiles a prompt for ChatGPT, Claude or Midjourney. Same room, same direction, whichever model you use.
Honestly, it started as a moodboard tool and the pivot came from a LinkedIn post about "taste" that got more traction than anything I had written. Taste was the conflicting word. This tool covers one narrow piece of it: making the direction explicit so someone who is not you, or something that is not you, can follow it.
It is a one-time purchase, no subscription. Composing boards is free. Use the code PRODUCTHUNT for 20% off this month.
I want to hear where it breaks. Run one real project through it and tell me the first thing that felt wrong or missing. That is what I am here for today.
Quick version of what this is: you drop the references you love, keyline reads them and writes the visual direction as one brief. You give that brief to ChatGPT, Midjourney or any image model and the results look like your references instead of the model's default taste.
I built it because I kept typing "less minimalist", "more like image 4", "not that warm" into every model, and then typing it all again when I switched models.
A few things that are true and easy to check: it runs in your browser, there is no sign-up, boards stay on your machine, and the direction is free to read. $29 once unlocks everything, forever. PRODUCTHUNT takes 20% off this month.
What I'd really like from you today: drop in six references you actually use and tell me if the direction it writes sounds like you. If it doesn't, say where it got you wrong. That is the feedback I can act on.
About keyline on Product Hunt
“Turn your references into a direction any AI can follow”
keyline was submitted on Product Hunt and earned 3 upvotes and 2 comments, placing #68 on the daily leaderboard. Drop in the references you already collect. keyline composes them into a board, measures what they share (palette, contrast, format, light) and writes the direction down as language. One direction, compiled for ChatGPT, Claude, Midjourney or any image model.
keyline was featured in Design Tools (262.8k followers), Productivity (661.2k followers) and Artificial Intelligence (479.1k followers) on Product Hunt. Together, these topics include over 328.8k products, making this a competitive space to launch in.
Who hunted keyline?
keyline was hunted by Marcos Nähr. 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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Marcos Nähr