New Relic Synthetics offers scripted browser monitors that allow users to track multi-step processes on a website with a real browser. One key feature of these monitors is XPath selectors, which are used to identify specific elements on a webpage. Optimizing XPath selectors can greatly improve the performance and reliability of New Relic Synthetics monitors by reducing the time it takes for scripts to locate elements on the page. XPath syntax is similar to file system paths but with additional rules specific to XML documents. Using relative XPath selectors instead of absolute ones, using efficient and specific selectors, and leveraging tools like Selenium can enhance the functionality of web scraping and testing automation processes. By learning how to optimize XPath selectors, users can improve the readability of their monitors, reduce the likelihood of monitor failures, and make troubleshooting easier.