Explore the power and challenges of browser extensions in this conference talk from CascadiaJS 2018. Discover how Textio's team augmented the writing experience across the web, addressing unique problems and finding innovative solutions. Learn about site-specific conditionals, preserving host page functionality, and implementing features like highlighters and mouse tracking. Gain insights into absolute positioning, Shadow DOM, and Chrome Extension development. Understand the potential of browser extensions to enhance user experiences while navigating their limitations.