If you're building a desktop app today, you're probably choosing between Electron and Tauri.
Electron has been the default for years. It powers apps like VS Code, Slack, Discord, and Notion. But Tauri has rapidly emerged as a serious alternative — promising tiny bundle sizes, better performance, and stronger security.
So which one should you use?
This guide walks you through what Tauri is, how it compares to Electron, real architectural differences, performance tradeoffs, security models, and even how to migrate.
What is Tauri?
Tauri is an open-source framework for building lightweight, secure desktop applications using:
Frontend: HTML, CSS, JavaScript (React, Vue, Svelte, etc.)
Backend: Rust
Rendering Engine: The system’s native WebView (not bundled)
Instead of shipping a full browser like Electron does, Tauri uses the WebView already installed on the user’s OS.
Core Idea
Use the OS’s browser engine + Rust for native power = tiny, fast apps
Key Characteristics
| Feature | Tauri |
| Backend | Rust (compiled, fast, memory-safe) |
| Frontend | Any web framework |
| WebView | System WebView (WebKit / Edge / WebKitGTK) |
| Bundle Size | Very small (single-digit MBs) |
| Security | Capability-based permission system |
| Mobile | Yes (iOS & Android in v2) |
What is Electron?
Electron is a framework for building desktop apps using:
Electron combines Chromium + Node.js into a desktop runtime.
Core Idea
Ship a full browser + Node runtime so your app behaves the same everywhere.
Key Characteristics
| Feature | Electron |
| Backend | Node.js |
| Frontend | Any web framework |
| WebView | Bundled Chromium |
| Bundle Size | Large (100–200MB typical) |
| Security | Process isolation + developer configuration |
| Mobile | No |
The Fundamental Architectural Difference
This one design choice changes everything:
| Aspect | Tauri | Electron |
| Browser Engine | Uses system WebView | Bundles Chromium |
| Backend Runtime | Rust | Node.js |
| Process Model | Lightweight Rust host + WebView | Main process + renderer processes |
| Binary Size | 3–10 MB | 150–200 MB |
| RAM Usage (idle) | 30–50 MB | 150–300 MB |
| Startup Speed | Very fast | Slower due to Chromium load |
What This Means in Practice
Tauri = smaller + faster + leaner
Electron = heavier + more consistent environment
Electron ships everything it needs. Tauri reuses what the OS already has.
Developer Experience: How Apps Are Structured
Both frameworks let you use your favorite frontend stack. The difference is in the backend.
Tauri Structure
my-tauri-app/
├── src/ # Frontend (React/Vue/etc.)
└── src-tauri/ # Rust backend
You write native functionality as Rust commands and call them from the frontend using Tauri’s IPC system.
Electron Structure
my-electron-app/
└── src/
├── main.ts # Node.js main process
├── preload.ts # Secure bridge
└── renderer.ts # Frontend
Electron uses:
Main process (Node.js, full system access)
Renderer process (your UI)
Preload scripts as a bridge
IPC: Talking Between Frontend and Backend
Tauri Example
Rust backend
#[tauri::command]
fn greet(name: &str) -> String {
format!("Hello, {}! Welcome to Tauri.", name)
}
Frontend
import { invoke } from '@tauri-apps/api/core';
const msg = await invoke<string>('greet', { name: 'Nishikanta' });
Clean. Direct. No preload script needed.
Electron Example
Main process
ipcMain.handle('greet', async (_, name: string) => {
return `Hello, ${name}! Welcome to Electron.`;
});
Preload
contextBridge.exposeInMainWorld('api', {
greet: (name: string) => ipcRenderer.invoke('greet', name),
});
Renderer
const msg = await window.api.greet('Nishikanta');
More moving parts, but very flexible.
Let’s look at what actually matters to users.
Bundle Size
| Framework | App Size |
| Tauri | ~5 MB |
| Electron | ~150–200 MB |
If users must download your app, this is huge.
Memory Usage
| Scenario | Tauri | Electron |
| Idle | ~45 MB | ~180 MB |
| Working | ~85 MB | ~320 MB |
| Heavy task | ~120 MB | ~520 MB |
Electron pays the cost of running Chromium. Tauri doesn’t.
Startup Speed
| Framework | Cold Start |
| Tauri | < 1 second |
| Electron | 2–5 seconds |
Tauri apps feel closer to native apps at launch.
Processing Speed
Rust vs Node.js also matters for heavy workloads.
| Task | Tauri (Rust) | Electron (Node) |
| Large file processing | Faster | Slower |
| CPU-heavy tasks | Strong | Moderate |
If your app does video processing, encryption, or heavy data transforms, Rust is a big advantage.
Security Model
This is one of the most important differences.
Tauri: Capability-Based Security
Tauri v2 requires you to explicitly grant permissions.
Example:
{
"permissions": [
"fs:allow-read",
"shell:allow-spawn"
]
}
You can even scope access to specific folders.
Default = locked down.
You opt into power.
Electron: Process Isolation
Electron security depends on configuration.
Best practices:
webPreferences: {
nodeIntegration: false,
contextIsolation: true,
sandbox: true,
preload: 'preload.js'
}
Default = permissive.
You must lock it down yourself.
Ecosystem & Maturity
| Area | Tauri | Electron |
| Age | Young (modern) | Mature (since 2013) |
| NPM ecosystem | Smaller | Massive |
| Learning curve | Rust required | JS-only possible |
| Documentation volume | Growing | Extensive |
Electron wins in sheer ecosystem size.
Tauri wins in modern architecture and efficiency.
When Should You Choose Tauri?
Tauri shines when:
Perfect for:
When Should You Choose Electron?
Electron is better when:
✅ Your team is JS-only
✅ You depend on Node-native libraries
✅ You want maximum community support
✅ Rapid prototyping is the goal
✅ You need guaranteed browser consistency
Perfect for:
Migration: Electron → Tauri
Good news: your frontend can stay the same.
You mainly replace:
Example:
Electron
ipcMain.handle('process-data', async (_, data) => {
return heavyProcessing(data);
});
Tauri
#[tauri::command]
async fn process_data(data: String) -> Result<String, String> {
Ok(heavy_processing(&data))
}
Frontend change:
const result = await invoke('process_data', { data });
That’s the core migration pattern.
Final Verdict
There is no universal winner — only the right tool for your constraints.
| If you want… | Choose |
| Tiny, fast, efficient apps | Tauri |
| Maximum ecosystem & JS-only | Electron |
| Strong built-in security model | Tauri |
| Easiest onboarding for web devs | Electron |
Tauri feels like the future of lightweight desktop apps.
Electron remains the king of ecosystem and maturity.
And the best part? Since both use web frontends, you’re never completely locked in.
