MinifyJS

A native JavaScript minifier and optimizer, driven from Python or the command line. No Node.js, no npm, no JavaScript runtime — the engine is a single self-contained binary. Repo:https://github.com/aldanedev-create/minifyjs

check doc website for more : MinifyJs-website

$ pip install minifyjs
$ minifyjs app.js -o app.min.js

from minifyjs import minify

result = minify("function add(a, b) { return a + b; }")
print(result.code)
# function add(a,b){return a+b;}

Why

JavaScript tooling usually means installing Node.js and a package manager before you can minify a file. MinifyJS ships as a native executable inside a platform-specific Python wheel: one pip install and you have a working minifier, with no JavaScript ecosystem on the machine.

How it works

MinifyJS is a thin, opinionated wrapper around esbuild's Go API. esbuild does the parsing, optimization, mangling, and code generation — the same engine that powers production builds at scale — and MinifyJS adds:

• A stable Python API with typed options and structured diagnostics.
• A native CLI with sane defaults and predictable exit codes.
• A single-binary distribution model (no Node.js, no toolchain).
• Framework-agnostic integration points for build systems that need minification as a step rather than as a Node tool.

The Go source of esbuild is compiled into the MinifyJS binary. Nothing shells out to Node, and nothing downloads a JavaScript runtime at install time.

Install

Python

pip install minifyjs

Requires Python 3.8+. Wheels are published for Linux (x86-64, aarch64), macOS (x86-64, arm64), and Windows (x86-64).

CLI only

Download the appropriate binary from the releases page and put it on your PATH. The Python package is not required to use the CLI, but it is the easiest way to get the binary.

Usage

Command line

minifyjs input.js -o output.js
minifyjs input.js --compress --mangle
cat input.js | minifyjs > output.js
minifyjs --version
minifyjs --help

Python

from minifyjs import minify, optimize, Options

# Whitespace/comments only
result = minify(source)

# Full optimization + identifier mangling
result = optimize(source)

# Explicit control
result = minify(source, Options(compress=True, mangle=True))
print(result.code)
print(f"{result.original_bytes} -> {result.minified_bytes} bytes")
for d in result.diagnostics:
    print(d)

See docs/python/ for the full API reference.

Documentation

• Getting started
• CLI reference
• Python API
• Engine and esbuild integration
• Architecture
• Contributing
• Security policy
• Roadmap

Status

Pre-1.0. The API is stable enough to depend on; the on-disk format of the bundled binary may still change between minor versions.

License

MIT. See LICENSE.

Acknowledgements

MinifyJS would not exist without esbuild, which provides the JavaScript parsing and optimization engine. esbuild is MIT-licensed and is compiled into MinifyJS's native binary.