Radial docs
Guides for both Radial products: the desktop app that lets you edit real marketing-site codebases visually, and the free Chrome extension for responsive testing.
Radial app
A macOS visual editor for marketing-site codebases. Open a real repo, see it running live, click to edit text, links, and images and changes are written back to the actual source. Run Claude Code or Codex alongside, and publish with git.
Viewport extension
Radial Viewport is a free, standalone Chrome extension for responsive testing: preview any site at any width, browse every page it has, and turn your review notes into prompts for AI coding agents.
Which one do I want?
The two are not connected; each is useful on its own. The Radial app is for changing a site: it runs your repo's dev server locally and writes edits back to source. It's in early access for macOS (request access here). The Viewport extension is for looking at any live site, yours or anyone's, at different breakpoints, and for collecting feedback you can hand to an agent. You can try it in your browser before installing.
Questions, bugs, ideas: support@radial.to.