The extension is available in the Google Chrome Web Store here:
You can install the extension directly from here:
The extension is only available for Edge Canary, the new Edge version based on Chromium. You can install it directly from Chrome's own web store:
Opera is compatible with Chrome extensions. You can install it directly from Chrome's own web store
The extension can be triggered by clicking on its icon in your browser's toolbar. It allows to select elements visually and preview the extracted data.
Each time you select an element from the webpage, it tries to find a unique selector for you.
Once you selected all the parts of the webpage you want to monitor, click on "Webhook setup" to go to Monitoro and create a new monitor, with your selections and URL prefilled.