Wails: Golang's Bet On Desktop Grade Apps To Beat Electron

하이라이트

• Wails yields a 52 MB binary for a desktop screen recorder, compared to Tauri at 57 MB and Electron at 324 MB.

• Unlike Electron's bundled Chromium browser, Wails and Tauri reuse the host platform's native rendering engine.

• Electron records the screen inside the web view with extra bridge overhead, whereas Wails and Tauri achieve higher runtime performance by interfacing directly with native macOS APIs.

• Electron achieves faster cold-start launch times at 1,890 ms, outperforming Wails at 2,337 ms and Tauri at 2,049 ms.

• Building a macOS screen capture feature in Wails required writing 450 lines of Objective-C via CGo due to the lack of Go wrapper libraries for Apple's ScreenCaptureKit.

타임라인

1. 00:00 - 03:26

   Architecture and Development Workflow of Wails

   Wails operates similarly to Tauri by using Go on the backend while leaving user interface rendering to the operating system's native web view engine. Front-end development relies on standard Web frameworks like React inside a dedicated folder structure. Running the local development server bridges backend Go functions directly to TypeScript, updating client-side definitions and triggering automatic re-renders whenever backend Go files change.

   • Wails pairs a Go backend with a web view frontend to target macOS and Windows.
   • System-native rendering engines power Wails instead of an embedded Chromium browser.
   • TypeScript API definitions regenerate automatically upon modifying Go backend methods.
2. 03:26 - 05:08

   Benchmark Comparison: File Size, Startup Speed, and Performance

   Testing across frameworks shows Wails leading in bundle size at 52 MB, followed closely by Tauri at 57 MB, while Electron reaches 324 MB due to its bundled Chromium runtime. Electron retains an advantage in launch speed, averaging a 350 ms warm start and a 1,890 ms cold start compared to Wails' 395 ms warm start and 2,337 ms cold start. For screen recording runtime performance, Wails and Tauri achieve higher efficiency by routing video data directly through native OS APIs rather than passing frames across the web view bridge.

   • Wails produces the smallest bundle size at 52 MB.
   • Electron achieves the fastest startup times across warm and cold launches.
   • Direct native API access eliminates the IPC bridge bottleneck present in standard Electron builds.
3. 05:08 - 07:00

   Developer Experience and Native System Integration

   Integrating lower-level platform APIs reveals differences in ecosystem maturity. While Tauri developers can import existing community Rust crates to interact with macOS ScreenCaptureKit directly, Go lacks equivalent community packages. Using Wails required writing roughly 450 lines of Objective-C and compiling it through Go's CGo foreign function interface. Developers comfortable with Go get a streamlined desktop framework, but system-level integrations may demand manual native coding.

   • Tauri offers pre-built Rust crates for native macOS frameworks like ScreenCaptureKit.
   • Wails requires bridging Go to native Objective-C code through CGo for unsupported OS APIs.
   • Framework choice depends primarily on language preference between Go and Rust.