(the web-based version) does not support third-party extensions or plugins like the "Round Corner" extension. Extensions such as Round Corner (developed by Fredo6) are designed exclusively for SketchUp Pro (desktop version).
Would you like me to write an essay with the following structure? Understanding the Limitations: Why "Round Corner Extension for SketchUp Free" Doesn't Exist Round Corner Extension Sketchup Free Download
Clarifies that SketchUp Free (browser-based) lacks an API for third-party extensions, making downloads impossible. making downloads impossible.