Electron vs Tauri vs NW.js for HTML5 Games

Most "Electron vs Tauri" comparisons are written for apps: note-takers, dashboards, chat clients. For those, Tauri's tiny download and lower memory use are easy wins. Games are different. A game cares about frame times, WebGL and audio behaving the same on every machine, and Steam. Judged on those, the answer changes.

The core difference: whose browser engine

• Electron and NW.js ship their own copy of Chromium (plus Node.js) with your game. Every player runs the exact engine you tested.
• Tauri uses the browser engine the operating system already has: Edge WebView2 on Windows, Safari's WebKit (WKWebView) on macOS, and WebKitGTK on Linux.

On Windows that's a wash: WebView2 is Chromium. On macOS and Linux your game runs on a different engine from the one you develop in, and its version is set by the player's OS, not by you. A Mac player who hasn't updated macOS in two years has a two-year-old WebKit.

Rendering and performance

WebGL. Chromium's WebGL runs through ANGLE and is very consistent. WebKit's WebGL is solid on recent macOS but has its own bugs and limits, and you'll be testing in Safari to find them. Linux is the weak spot: Tauri's own documentation says WebGL and canvas under WebKitGTK "can silently land on a slow path", causing input lag and low frame rates, most often on NVIDIA, and suggests a non-WebGL fallback on Linux.

WebGPU. Chromium has shipped WebGPU on Windows and macOS for a while. Safari turned it on by default only recently, and only on the newest macOS. WebKitGTK support is not something to count on. If you use WebGPU, a system web view means a WebGL fallback path.

Audio and timing. Electron and NW.js let you switch off background throttling, so your loop keeps running when the player alt-tabs, and let audio start without a click. With system web views, behaviour depends on each engine.

Memory and CPU. Once a game is running, it dominates its own memory use. The runtime overhead that matters for a chat app barely registers next to your textures and audio.

Download size

This is Tauri's real win. A Tauri app's runtime is well under 1 MB; Electron and NW.js add roughly 80 to 100 MB or more. For a 30 MB pixel-art game, that's a large share of the download. For a 500 MB 3D game, nobody notices.

Steam players rarely care about 100 MB. Web-portal and itch.io players browsing small jams games sometimes do.

Steamworks

• Electron and NW.js have community libraries: steamworks.js and greenworks. Both work, and both are lightly maintained today. The Steam overlay under Electron needs particular Chromium flags and careful setup.
• Tauri has no JavaScript Steamworks library; you'd write Rust bindings yourself.

See how to put an HTML5 game on Steam for the full picture.

Building, signing and updates

All three leave code signing to you: buy a Windows certificate (or use Azure Trusted Signing), get an Apple Developer ID, set up notarisation. All three need a Mac, or a macOS CI runner, to produce a signed Mac build.

Electron has the most mature tooling: electron-builder and Forge produce every installer format, and auto-updates are built in.

NW.js treats your game's HTML page as the app's entry point, which suits games, and it keeps up with every Chromium release. Packaging and updates are community tools.

Tauri has the most modern design: a signed updater plugin, mobile targets, and a small security surface. But the native side is Rust.

So which one?

• WebGL- or WebGPU-heavy game, or shipping on Steam: Electron. The consistency and the JavaScript Steam libraries outweigh the download size.
• You like NW.js's model of the page being the app, or your engine already targets it: NW.js is a fine choice and very much alive.
• Small 2D game, download size matters, Steam not planned, and you'll test on all three OSes: Tauri.

Or skip the runtime decision

Deskifier runs on Electron and handles the parts all three leave to you. Upload your game folder and get:

• signed and notarised builds for Windows, macOS and Linux, with no Mac needed;
• Steamworks from JavaScript;
• an in-game settings menu;
• save backups;
• one-button uploads to Steam, itch.io and Epic.

Dev builds are free. See every tool for turning an HTML game into a desktop app if you're still deciding.