UI Design Editor

open-sourceNew

A free design canvas you and your AI edit together

About

UI Design Editor is a free, open-source mockup tool in the browser with no signup. You can select, cut, move and resize parts of a UI (including pieces of a screenshot), and your AI assistant can read and edit the same canvas through the site's WebMCP tools or by sending in HTML and screenshots, then pick up from your changes. Projects live in shareable Spaces and export to HTML or PNG. MIT licensed on GitHub (janpmz/uidesigneditor).

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