Cross-browser compatibility testing plays a crucial role in ensuring that Progressive Web Applications (PWAs) deliver a consistent and seamless user experience across different browsers and devices. As the demand for PWAs continues to rise, the need for robust testing tools to validate cross-browser compatibility becomes increasingly vital. This article explores the significance of testing tools in the context of PWAs, delving into key challenges faced in achieving cross-browser compatibility, highlighting top testing tools available, discussing best practices for their utilization, exploring automation strategies, examining performance metrics, and offering insights into the future trends of cross-browser compatibility testing.