Shipping a Web Game with Tauri

Install Rust and Tauri Prerequisites

Tauri's backend is written in Rust, so the Rust toolchain is required even if you never write Rust code yourself. Install Rust through rustup, the official Rust installer, which manages the compiler, package manager (Cargo), and related tools. The installation is straightforward on all platforms and adds the rustc compiler and cargo build tool to your PATH.

Each platform has additional prerequisites. On macOS, install the Xcode command line tools with xcode-select --install, which provides the system frameworks and compilers that Tauri needs. On Linux (Ubuntu/Debian), install the WebKitGTK development package and related libraries: sudo apt install libwebkit2gtk-4.1-dev build-essential curl wget file libssl-dev libayatana-appindicator3-dev librsvg2-dev. On Windows, install the Visual Studio Build Tools with the C++ workload and the WebView2 runtime, though WebView2 ships with Windows 10 and 11 by default.

For mobile development, additional setup is required. iOS builds need a full Xcode installation (not just command line tools) and an Apple Developer account. Android builds need Android Studio, the Android SDK, the NDK (Native Development Kit), and the appropriate Rust target toolchains: rustup target add aarch64-linux-android for ARM64 devices and rustup target add x86_64-linux-android for emulators.

Install the Tauri CLI globally with cargo install tauri-cli or use it through npm with npm install -D @tauri-apps/cli. The npm approach integrates better with JavaScript-based game build pipelines since you can add Tauri commands to your package.json scripts alongside your game's build commands.

Create the Tauri Project

If you are starting a new game, use npm create tauri-app@latest to scaffold a project with your preferred frontend framework. The wizard asks for a project name, frontend framework (vanilla JS, React, Vue, Svelte, or others), and package manager. For an existing game, add Tauri to your project by running npm install -D @tauri-apps/cli @tauri-apps/api and then npx tauri init to generate the Tauri configuration files.

The tauri init command asks for your app's name, window title, the directory where your game's build output lives (relative to the project root), and the development server URL for hot-reload during development. This information goes into src-tauri/tauri.conf.json, the central configuration file that controls every aspect of how Tauri builds and runs your app.

The generated src-tauri/ directory contains the Rust source code for your app's backend, the Cargo.toml manifest listing Rust dependencies, and the configuration file. For a game that does not need any Rust backend logic, the default generated code works without modification. The Rust side simply initializes the WebView, loads your game, and handles the application lifecycle.

Point the build.devUrl configuration option to your game's development server (like http://localhost:5173 for Vite) so that Tauri loads your game from the dev server during development. Set build.frontendDist to your game's build output directory for production builds, where Tauri will bundle the files directly into the application binary.

Configure the Game Window

Games have different window requirements than typical desktop applications. Open tauri.conf.json and adjust the window configuration under the app.windows array.

For a fullscreen game, set "fullscreen": true to launch directly in fullscreen mode. For a windowed game, set "width" and "height" to your game's target resolution and "resizable": true if your game handles dynamic canvas resizing. Set "decorations": false to remove the system title bar for a more immersive feel, though you will need to implement your own window controls (minimize, maximize, close) in your game's UI if you do this.

The "title" property sets the window title bar text. The "center": true property centers the window on the screen at startup. For games that should prevent the player from resizing below a minimum playable resolution, use "minWidth" and "minHeight" to set lower bounds.

Configure the Content Security Policy (CSP) in the app.security section. For a game that loads all assets locally, a strict CSP works well. If your game loads assets from external CDNs or connects to multiplayer servers, add those domains to the CSP's connect-src and img-src directives. Getting the CSP right during development saves debugging time later, because Tauri enforces it strictly and blocked requests fail silently in some WebView implementations.

Add Native Commands

Tauri's command system lets you write Rust functions that your JavaScript game code calls through the invoke API. This is optional for simple wrapped games but valuable for games that need performance-critical backend logic.

A basic command is a Rust function decorated with #[tauri::command] that receives parameters from JavaScript and returns a result. For example, a save-game command might accept a JSON string from JavaScript, write it to a file in the app's data directory, and return a success or error status. The function runs on a separate thread from the WebView, so it does not block your game's render loop.

For compute-intensive game logic, Rust commands provide dramatic performance improvements over JavaScript. Pathfinding on large grids, procedural terrain generation, physics simulations with many bodies, and noise function evaluation all run significantly faster in compiled Rust than in JIT-compiled JavaScript. If your game has any computation that causes frame drops in the browser, moving it to a Rust command is often the simplest solution.

Register your commands in the Tauri builder chain in src-tauri/src/main.rs using .invoke_handler(tauri::generate_handler![your_command]). On the JavaScript side, call them with await invoke('your_command', { param: value }). The data serialization between Rust and JavaScript uses serde for JSON, which handles most data types automatically including strings, numbers, arrays, and nested objects.

Tauri also provides a plugin system for reusable native functionality. Core plugins cover file system access, HTTP clients, shell commands, clipboard operations, dialog boxes, and system tray integration. Community plugins extend into areas like SQLite databases, biometric authentication, and OS notifications. Browse the Tauri plugin registry before writing custom commands because the functionality you need may already exist.

Add Mobile Platform Support

Tauri 2.0 supports iOS and Android alongside the three desktop platforms. Mobile support is added to an existing Tauri project by initializing the mobile targets.

Run npx tauri android init to generate the Android project scaffold and npx tauri ios init for iOS. These commands create platform-specific project directories under src-tauri/gen/ containing the native project files. Like Capacitor, these are real native projects that you can open in Android Studio and Xcode for customization.

Mobile builds use the same Rust backend and JavaScript frontend as desktop builds. The main differences are in the WebView capabilities (mobile WebViews have slightly different feature support than desktop ones) and the available system APIs. Tauri's mobile plugins provide access to device sensors, haptic feedback, biometric authentication, and other mobile-specific features.

Configure mobile-specific settings in tauri.conf.json under the bundle section. Set the app identifier (bundle ID for iOS, application ID for Android), configure permissions in the generated manifest files, and provide app icons at the required sizes for each platform. Orientation locking, status bar configuration, and splash screen setup are handled through the native project files rather than the Tauri configuration.

Test Across Platforms

Run npx tauri dev to start your game in a development window on the current platform. This command builds the Rust backend, starts your frontend dev server, and opens the game in a Tauri window with hot reload. Changes to your web code appear immediately without restarting the app. Changes to Rust code trigger a recompilation that takes a few seconds on subsequent builds.

For mobile testing, use npx tauri android dev and npx tauri ios dev to deploy to connected devices or emulators. Real device testing is essential for games because emulators do not accurately represent WebView rendering performance, touch input latency, or GPU capabilities. Test on devices that represent your target audience, including at least one mid-range Android device.

Enable the WebView inspector during development to debug JavaScript issues on the device. On macOS, enable the Safari Web Inspector to debug iOS WebViews. On Android, use Chrome's remote debugging through chrome://inspect. These tools let you profile JavaScript performance, inspect the DOM, monitor network requests, and debug rendering issues on the actual device.

Test the full application lifecycle: cold start performance, background/foreground transitions, memory usage during extended sessions, and behavior when the system is under memory pressure. On mobile, the OS may terminate background apps to reclaim memory, so your game should save state when backgrounded and restore it cleanly when foregrounded.

Build Release Binaries

Run npx tauri build to create optimized release binaries for the current platform. On macOS, this produces a .app bundle and a .dmg installer. On Windows, it produces an .exe installer using NSIS or WiX. On Linux, it produces .deb and .AppImage packages. The build process compiles your Rust backend with full optimizations, bundles your web assets, and packages everything into platform-specific installers.

For mobile release builds, use npx tauri android build and npx tauri ios build. The Android build produces an APK or AAB (Android App Bundle) that you upload to Google Play. The iOS build produces an archive that you submit through Xcode to App Store Connect. Both mobile builds require proper code signing configuration: a keystore for Android and a distribution certificate with provisioning profile for iOS.

Cross-compilation for desktop platforms other than the one you are building on requires CI/CD pipelines. GitHub Actions is the most common choice, where you set up build jobs for Windows, macOS, and Linux that each compile the native binary on their respective platform. Tauri's GitHub Action (tauri-apps/tauri-action) handles the build pipeline and produces downloadable artifacts for each platform.

The resulting desktop binaries are remarkably small. A simple 2D game wrapped with Tauri typically produces a 5 to 15 megabyte installer depending on the game's asset size, compared to 120+ megabytes for the same game wrapped with Electron. This size advantage translates directly to faster downloads, lower storage usage, and a lighter footprint on the player's system.