javascript-obfuscator/javascript-obfuscator

Health v2 · maintenance only

Adoption not part of the score

16218 stars · 1737 forks observed · 2026-08-28

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

A powerful open-source JavaScript and Node.js obfuscator that transforms readable source code into hard-to-reverse-engineer output using identifier renaming, string array encoding, control flow flattening, dead code injection, and self-defending transforms. A companion commercial service (obfuscator.io) adds VM-based bytecode obfuscation with anti-LLM defenses on top of the free package.

Use cases

• obfuscate javascript source code
• protect proprietary js algorithms from reverse engineering
• mangle variable names and encode strings in a nodejs build
• flatten control flow to hinder static analysis
• protect client-side licensing logic
• obfuscate code in a webpack or cli build step

When to choose

• you need free, configurable JavaScript obfuscation for browser or Node.js code
• you want identifier renaming, string array encoding, and control flow flattening in an npm pipeline
• you need a CLI or Node API to obfuscate files as part of a build

When to avoid

• you expect obfuscation to protect secrets or API keys - it is not encryption
• you need VM bytecode virtualization, which is only in the paid obfuscator.io service
• you need minification or tree-shaking - use a bundler like terser/esbuild instead
• obfuscating vendor libraries or performance-critical hot paths

Facets

library · maturity active

security compiler developer-tools security web-development reverse-engineering browser cross-platform cli obfuscation javascript-obfuscator code-protection control-flow-flattening string-encoding anti-reverse-engineering typescript javascript nodejs

Member repositories

For agents

markdown · JSON · MCP: product_card(name="javascript-obfuscator/javascript-obfuscator")