Loupe is an open-source AI website builder and web-design studio for Windows. It combines autonomous agents that generate sites from a description with human refinement on a live page, where every AI edit receives automatic verification against the real browser render.
The process begins when a user describes a site and agents build it. Refinement occurs on the canvas by pointing at any element or sketching over it with the Draw tool, followed by edits performed either by hand or through natural language requests to an agent. The system then conducts an automatic before-and-after pixel-level comparison against the actual rendered page to confirm the change before marking it complete. This verification loop ensures that "done" corresponds to visible accuracy on screen.
Loupe runs locally on Windows 10 or 11. Users supply their own API keys from supported AI providers including Claude, ChatGPT, Grok, Gemini, OpenAI, xAI, OpenRouter, or Copilot, which keeps operation private without additional charges from the tool itself. The project is distributed under the MIT license and is available as a downloadable application for Windows.
Loupe is a Design & Creative product. It focuses on building and iteratively refining websites with AI while ensuring every change is visually verified against the live render instead of relying on unverified code generation. Loupe is an open-source project aimed at web designers and developers. The project is open source (MIT). It runs on the web and Windows, and it can be self-hosted.
Loupe first shipped in 2026. The project is developed in the open on GitHub with 12 commits in the last 90 days. Among its 6 catalogued features are Live Verification, Pixel Diff, and point & Edit.
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