Ship web
inside native.

A bundle format and runtime for delivering web resources to any webview-mounted platform — signed, versioned, and guaranteed to work offline.

Architecture

your source

app/main.tsx

styles/app.css

assets/*.png

package.json

bundle

app.wvb

2.1 MB · ed25519

webview host

iOSWKWebView

AndroidWebView

DesktopTauri / Electron

RNreact-native-webview

deterministic · signed · offline

Every bundle carries its full dependency graph. Mount it once and the app keeps working — subway, plane, dead network, doesn't matter.

await mount("app.wvb", { offline: true });

Author with React, Vue, Svelte, or vanilla HTML. The build step emits a single .wvb artifact from any bundler output — no custom toolchain to learn.

wvb build ./dist --sign ed25519

One bundle format, identical runtime behavior on iOS WKWebView, Android WebView, Tauri, and Electron. No per-host packaging branches.

// Same bundle. Every host.

A typed bridge exposes host capabilities to your web code. Streaming IPC with cancellation and backpressure, adapters for Swift, Kotlin, and Rust.

const result = await native.fs.read(path);

Runs on

platform

iOS

platform

Android

platform

macOS

platform

Windows

platform

Linux

Start now

Three commands from zero to a mounted bundle.

$ npm install -g webview-bundle$ wvb init my-app$ wvb build ./my-app --out app.wvb