Convert a Prompt or Image to User Interface.
Hi HN, I’m Thijs, new to the community and excited (and a bit nervous) to share what I’ve been working on: it's called Prototyper. The motivation: I was curious how much more "taste" you could get out of an LLM if you built the entire infra yourself: tool calling, code execution, rendering—instead of layering on top of existing stacks. Over the past year I built a custom compiler, runtime, and design engine from scratch to see if this could make LLM-driven design genuinely better. A few details: - Own compiler + code runtime → no shadcn, no third-party UI kit, no external execution layer. -…
Convert a Prompt or Image to User Interface. launched on March 6, 2024 with 12 votes, #1,412 of 4,270 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
This tool converts prompts or images into user interface designs. Launched in March 2024, it helps designers and developers quickly transform ideas or visual references into functional UI mockups. The product is designed for anyone needing to prototype interfaces rapidly, from product teams to individual creators looking to visualize concepts before full development.
written from the facts on this page · September 2026
From the sources
Prototyper is the first visual workspace for your agents and your team. Give Claude Code, Codex, Cursor, and other agents a shared canvas for plans, apps, and diagrams.
One canvas. Designers, engineers, and agents shipping the same artifact. Every idea you draw becomes real, running code. Try ten, keep the one. The prototype is the product. Move a shape and the code follows. Edit the code and the canvas catches up. One living artifact, from first sketch to production. Claude Code, Codex, Cursor, or Copilot can read your files, write real React, and open PRs while the result appears beside you. Everyone works from the same files in the same room. See who is doing what, then ship the same running product together. Spin one up for the UI, one for the tests, one for the copy. Watch them work in parallel, on the same canvas. Skip the status meetings; the work…from getaprototype.com
In the maker’s words, at launch
Hi HN, I’m Thijs, new to the community and excited (and a bit nervous) to share what I’ve been working on: it's called Prototyper. The motivation: I was curious how much more "taste" you could get out of an LLM if you built the entire infra yourself: tool calling, code execution, rendering—instead of layering on top…
Does a similar job
all alternatives →
21st.dev2025 · 21st.dev · ▲1,211I originally built this app to organize and reuse interesting React + Tailwind components I came across on Twitter, inspired by the shadcn/ui approach. Later, a friend started contributing their own components, and it got me thinking—this could grow into something bigger, like an NPM for design engineers to share and use components. Would love to hear your thoughts!
Once UI 1.5Dec 2025 · once-ui.com · ▲302When I started my career and built my first design system, I was beyond excited. It took a lot of iterations, learning and 6 months of work to launch it internally. In the next job, I did it again, then at the following job, again… And no matter which company I worked for, 80% of the design system was the same. I’ve decided to work full-time on the design system I’ve always wanted, and today I’m launching and open-sourcing it. You can use it to build Next.js apps faster, and I’ve designed it in a way that it’s hard to go wrong with it: you can choose any settings, and you’ll end up with a…
More ai this month
the category →
Paintings by AI models: programs run through a simulation of oil paint.
AI · 20d ago · stillwet.art
PixVerse R2▲381A real-time world model you can explore and change
AI · 28d ago · world.pixverse.video
Source: Show HN post ↗ · launch text quoted in part
Launched alongside, March 2024
the whole month →
🌐 The Internet Computer! Free, Open-Source, and Self-Hostable. - HeyPuter/puter
Dev tools · 2024 · github.com
Microlaunch▲1,115Launch and get feedback on both the idea and product
Dev tools · 2024 · microlaunch.net
