SelectorsHub is a Chrome extension that simplifies the process of generating, writing, and verifying xPath and cssSelector. It can be used as a smart editor for writing and verifying xPath, cssSelector, Playwright selectors, jQuery, and JS Path. With SelectorsHub, you can also auto-generate unique xPath, cssSelector, and all possible selectors. The extension supports various features such as error handling, handling shadow dom and nested shadow dom, iframes, SVG elements, dynamic elements, and more. To learn more about SelectorsHub, you can visit the product page or watch a tutorial on YouTube.