pen.dev
Design UI on a live canvas
pen.dev is an infinite-canvas design editor for websites, app screens, dashboards, slides and marketing graphics. This plugin opens the editor right in the conversation, so Codex designs on a live canvas while you watch: it lays out screens, builds reusable components and variables, and refines what's already there.
What you can ask
- Open a new design in pen.dev
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Skills
1 in the ChatGPT listing