mishoo/UglifyJS

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

13382 stars · 1224 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

UglifyJS is a JavaScript parser, minifier, compressor, and beautifier toolkit written in JavaScript. It provides a CLI and a programmatic API for parsing code into an AST, compressing and mangling it, and generating output with source maps.

Use cases

• minify javascript files for production
• compress and mangle variable names in js bundles
• parse javascript into an ast for analysis
• beautify or reformat minified javascript code
• generate source maps during minification
• build a custom javascript code transformation tool

When to choose

• you need a fast, mature ES5/ES6 JavaScript minifier with CLI and API access
• you want AST-level tools (scope analysis, tree walking, transformation) for JavaScript
• you're minifying code already transpiled from modern syntax

When to avoid

• you need to minify cutting-edge ECMAScript syntax without transpiling first
• you want a modern bundler with tree-shaking and module resolution (use esbuild, terser-based toolchains, or Rollup)
• you need ES module-aware minification with full ES6+ semantics

Facets

library · maturity maintenance

parser compiler developer-tools cli developer-tools web-development frontend programming-languages parsers cli cross-platform minifier javascript mangler beautifier ast source-maps es6 code-optimization nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="mishoo/UglifyJS")