DevToolKit

JavaScript Minifier & Bundler

Minify, bundle, and tree-shake JavaScript and TypeScript code instantly. Uses high-performance esbuild-wasm for industrial-grade optimization. 100% private.

Build Utility

JS Bundle Optimizer

Bundling Active
Total In:0.13 KB
Total Out:0.00 KB
Saved 100.0%
Safe & Local

Virtual Project

Build Settings

Editing: index.js
Output Bundle
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How to Use

The Professional JavaScript Minifier & Bundler is an industrial-grade tool for optimizing code using the high-performance esbuild engine.

How to use this tool

  1. Manage Files: Use the "Virtual Project" sidebar to add multiple files (e.g., index.js and utils.ts). The tool supports JavaScript, TypeScript, and JSX.
  2. Configure Build: Toggle minification, bundling, and tree-shaking based on your requirements.
  3. Select Target: Choose your deployment target (e.g., ESNext for modern browsers or ES5 for legacy compatibility).
  4. Review Output: The bundled and minified code appears instantly in the right-hand editor. The tool automatically resolves imports within your virtual project.
  5. Performance Stats: Monitor the top ribbon to see exactly how much space you've saved and verify the "Safe & Local" status.

About This Tool

High-Performance Bundling

Unlike standard minifiers that process one file at a time, our tool features a full Virtual File System. This allows you to paste multiple modules and have them bundled together using Tree Shaking—a process that automatically removes unused exports to keep your bundle size at an absolute minimum.

By using esbuild-wasm, we deliver near-native speeds entirely within your browser, making it the fastest professional bundling workbench available online.

Why Use This Tool

Security & Privacy First

Handling proprietary source code requires trust. Most online bundlers send your code to their servers for processing. DevToolKit's minifier runs **completely locally** in your browser using WebAssembly. Your code, API keys, and business logic never leave your device, ensuring total privacy during your development workflow.

FAQ

What minification engine does it use?
It uses esbuild-wasm, an ultra-fast bundler written in Go and compiled to WebAssembly. It provides industrial-grade minification with tree-shaking and dead code elimination.
Does it support TypeScript natively?
Yes. esbuild handles TypeScript natively, stripping type annotations during minification without requiring a separate tsc compilation step.
How much can it reduce code size?
Typically between 40% and 70% depending on the original code. The reduction comes from removing whitespace, renaming variables, eliminating dead code, and optimizing expressions.
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