Optimizing Vite Build Output: A Practical Guide to Tree-Shaking

📰 Dev.to · Avwerosuoghene Darhare-Igben

Learn to optimize Vite build output using tree-shaking to reduce bundle size and improve performance

intermediate Published 22 May 2026

Action Steps

Configure Vite to use tree-shaking by setting build.lib option to true
Use the --mode flag to specify the build mode, such as production or development
Run the Vite build command with the --optimize flag to enable optimization
Use a bundle analyzer tool to visualize and identify unnecessary code
Apply tree-shaking by removing unused code and dependencies

Who Needs to Know This

Developers and devops teams can benefit from this guide to improve the efficiency of their Vite builds and reduce bundle sizes

Key Insight

💡 Tree-shaking can significantly reduce bundle size and improve performance by removing unused code and dependencies

Key Takeaways

Learn to optimize Vite build output using tree-shaking to reduce bundle size and improve performance

I used to think bundle optimisation was someone else's problem. I'd write code using convenient...