Production-Ready Android WebView: Security, Performance, Observability

WebView is one of the most powerful — and most dangerous — components in the Android toolbox. While it effortlessly powers payments, UGC editors, and mini-apps, it is also a top source of security vulnerabilities, memory leaks, and UI jank.

In this session, I will distill the practical Kotlin patterns used to ship secure, interactive web content inside production Android apps at massive scale. We will dive deep into locking down a WebView by default (HTTPS enforcement, origin allowlists, minimal-surface JS bridges), handling custom schemes safely so the app isn’t used as an open redirect, and solving the operational side of WebViews. You will learn performance techniques that actually move the needle — like hidden-instance warm-ups and smart caching — alongside observability strategies to track JS-to-native breadcrumbs. Attendees will leave with a concrete, pre-launch security and reliability checklist they can apply immediately.