Shivansh Raj Srivastava writes that he used Claude as a coding agent to build a free Chrome extension that brings macOS-style Quick Look to web links. By pressing Space while hovering over a link, users can preview a page in a frosted panel without opening a new tab. The project was completed in a single day of heavy multitasking, producing roughly 4,800 lines of code and multiple preview modes including live, reader, and media. The author notes that the agent's ability to find and fix bugs was the real value of the workflow, resulting in a functional tool that requires manual installation as an unpacked extension.
- A secondary Claude agent identified a security hole in version 1.0 where any website could embed and drive the preview panel.
- The extension refuses to preview action links like "Log out" or "Delete" unless explicitly authorized, showing a warning bubble instead.
- YouTube retains its native Spacebar functionality, so users must use Shift+Space to trigger the preview on that site.
- A secondary Claude agent identified a security hole in version 1.0 where any website could embed and drive the preview panel.
- The extension refuses to preview action links like "Log out" or "Delete" unless explicitly authorized, showing a warning bubble instead.
- YouTube retains its native Spacebar functionality, so users must use Shift+Space to trigger the preview on that site.
