Do I have to use a specific browser for PWI Fund’s extension to work? Project World Impact June 15, 2020 19:36 Updated Nope. We have the extension available to download for two different browsers: Google Chrome and Firefox. Related articles How do I download the PWI Fund extension on Firefox? Can I use PWI Fund on Amazon? How I sign up to have a PWI Profile? Comments 0 comments Please sign in to leave a comment.