# kuizuo/js-deobfuscator

An automated JavaScript deobfuscation tool based on Babel AST, with an online playground, CLI, and programmable API.

Repository: https://github.com/kuizuo/js-deobfuscator
Canonical: https://ross.abutalabs.com/products/js-deobfuscator
Homepage: https://js-deobfuscator.vercel.app
Language: JavaScript
License: MIT
License Family: permissive
Topics: ast, javascript, obfuscator, deobfuscator, babel
Last push: 2026-08-11T17:50:30+00:00

## Health v2 (maintenance only)
Score: 89/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 97, release rhythm 73, longevity 100
- inputs: {"age_days": 1868, "days_push": 22, "days_rel": 22, "gap_med": 97.0, "n_releases_24m": 3}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1171, forks 268 (observed 2026-08-28T04:03:51.453474+00:00)

## What it is
An automated JavaScript deobfuscation tool built on Babel AST transforms, offering a CLI, a TypeScript API, and an online playground. It reverses common obfuscation techniques such as string-array encoding, control-flow flattening, self-defending code, and variable mangling.

## Use cases
- deobfuscate obfuscated javascript code
- restore readable source from minified and obfuscated js
- remove anti-debug and self-defending code from scripts
- unflatten control flow in obfuscated bundles
- decode string arrays in obfuscated javascript
- reverse engineer obfuscated web scripts
- clean up and rename mangled variables in js

## When to choose
- you need to analyze obfuscated JavaScript from web scraping or reverse engineering
- you want a CLI or programmatic API for batch deobfuscation
- you prefer an online playground for quick one-off deobfuscation
- you need to undo common obfuscator.io-style transformations

## When to avoid
- you need to obfuscate code rather than deobfuscate it
- you work primarily with minified but not obfuscated code (a simple formatter suffices)
- you need deobfuscation for languages other than JavaScript

## Facets
- artifact type: cli-tool
- maturity: active
- function: parser, developer-tools, cli
- domain: developer-tools, security, reverse-engineering, web-development
- platform: cli, cross-platform
- tags: javascript, deobfuscator, babel, ast, obfuscation, reverse-engineering, playground, nodejs, web-server

## Member repositories
- kuizuo/js-deobfuscator (main) score 89

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:51.453474+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:28:31.979542+00:00, confidence not recorded.
  - readme: https://github.com/kuizuo/js-deobfuscator (fetched 2026-08-28T04:03:51.453474+00:00, sha 53e275a2a146)
- Data as of 2026-08-30T08:39:29.467469+00:00.