The Venngo browser extension is available on the extension store of all major browsers, including Google Chrome, Safari, Microsoft Edge, and Mozilla Firefox. All you need to do is locate the extension store for your chosen browser, search for “Venngo Browser Extension” and download it. You can choose to pin the extension on your browser navigation bar for easy access; however, you will still be notified if a perk is available, should you choose not to do that. You can also follow this tutorial: https://helpcentre.venngo.com/en/venngo-extension-how-to-download
If you are signing up for the first time, you will be prompted to download the browser extension as well.