Sometimes the fastest path is to embed a web view — a help center, a payment flow, an existing web app, or content that changes often. react-native-webview renders web content inside your app and lets you pass messages between the web page and React Native, but it needs care around security and performance.
Key takeaways
- Use a WebView for content that is genuinely web-based or changes too often to ship natively.
- Bridge native and web with postMessage instead of fragile URL hacks.
- Restrict navigation and scripts to trusted origins to avoid security holes.
When a WebView is the right tool
A WebView shines for content you do not want to rebuild natively: legal pages, knowledge bases, third-party checkout flows, or an existing responsive web app. It is not a substitute for native UI on core screens, where the web view's scrolling and input handling will feel slightly off compared to native components.
Bridging native and web
The WebView can inject JavaScript and exchange messages with the page through postMessage and the onMessage handler. This is the clean way to, for example, hand an auth token to an embedded web app or react to an event from the page — far better than parsing navigation URLs.
Security and performance
Lock down which origins can load and run scripts, validate any message coming from the page, and never inject secrets into untrusted content. For performance, keep injected JavaScript small, show a loading state, and avoid recreating the WebView on every render so its session and cache persist.