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optimizing-tauri-binary-size

Configures Cargo release profiles and Tauri build settings to minimize desktop application binary size.

Updated Jun 7, 2026
Search Tags:#optimization#desktop app#rust#cargo#tauri#binary size#release build
One-click install
npx skills add https://github.com/dt418/better-shot-x --skill optimizing-tauri-binary-size-dt418
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: optimizing-tauri-binary-size
Source: https://github.com/dt418/better-shot-x/tree/main/.agents/skills/optimizing-tauri-binary-size
Command: npx skills add https://github.com/dt418/better-shot-x --skill optimizing-tauri-binary-size-dt418

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve? Tauri applications can ship with unnecessarily large binaries when default Cargo release settings are used, and developers often lack a clear reference for which profile flags, LTO modes, and Tauri build options actually reduce bundle size. ## Core Features & Use Cases - Cargo Profile Optimization: Provides ready-to-use [profile.release] settings including codegen-units = 1, lto = true, opt-level = "s", panic = "abort", and strip = true, with explanations of each option's trade-offs. - Tauri Build Configuration: Covers removeUnusedCommands in tauri.conf.json (Tauri 2.4+) and guidance on enabling only the Tauri features your app actually needs. - Nightly Toolchain Options: Documents extra optimizations like trim-paths and build-override profiles for teams using the nightly Rust toolchain. - Use Case: Before shipping a production release of a Tauri 2 desktop app, apply the complete example Cargo.toml and tauri.conf.json configurations, then verify the resulting AppImage, MSI, or .app bundle size with the provided check commands. ## Quick Start Ask the assistant to optimize your Tauri app's release binary size by updating src-tauri/Cargo.toml and tauri.conf.json with the recommended profile and build settings.

Frequently Asked Questions about optimizing-tauri-binary-size

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I reduce Tauri app binary size?▼

Set codegen-units = 1, lto = true, opt-level = "s", panic = "abort", and strip = true in the [profile.release] section of src-tauri/Cargo.toml. Also enable removeUnusedCommands in tauri.conf.json and only include Tauri features your app actually uses.

What Cargo profile settings make Rust binaries smaller?▼

The key settings are lto = true for link-time optimization, codegen-units = 1 for better whole-program optimization, opt-level = "s" or "z" to optimize for size, panic = "abort" to remove unwinding code, and strip = true to remove debug symbols.

Why is Tauri smaller than Electron?▼

Tauri uses the operating system's native webview instead of bundling Chromium, and its Rust backend compiles to native code with no JavaScript engine included. This produces binaries around 3-6 MB compared to 120-180 MB for Electron.

Does removeUnusedCommands work in Tauri 2?▼

Yes, removeUnusedCommands is available in Tauri 2.4 and later. Add it under the build section of tauri.conf.json, and Tauri will analyze your Access Control List and strip command handlers that are not permitted, reducing binary size automatically.

Why does my Tauri build fail with LTO enabled?▼

Full LTO is memory-intensive and can fail on constrained systems. Try lto = "thin" as a fallback, ensure sufficient available memory, and update to the latest Rust toolchain version.

What are the trade-offs of opt-level z in Rust?▼

opt-level = "z" produces the smallest binaries but sacrifices runtime performance compared to "s" or "3". Build times stay similar, so the main cost is slower execution speed for size-critical code paths.

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