This is great ? Does it support all major browsers for feedback and metadata ?

Yes – our least supported dependency is html2canvas[1] (for screenshotting), which is supported in Chrome 1, Firefox 3.5, Opera 12, IE9+, Safari 6+. The rest of our front-end is a React app, so if your browser can run React (which is IE9+ I believe) then it should work on FeaturePeek. Give it a try and let us know if you encounter any issues.

[1] https://github.com/niklasvh/html2canvas/