JS-Confuser

JS-Confuser is ranked #10 of 30 in code obfuscation software on The Geeks Club. It runs on API, Linux, macOS, Web, Windows. There is a free plan.

JS-Confuser plans and pricing

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Free Free Open source · Available for free js-confuser.com · 30 Sept 2026

Compared on code obfuscation software

Free plan: Yes
Supported targets: JavaScript, Node.js, browser
Anti-tamper controls: Yes
Control-flow obfuscation: Yes
String encryption: Yes
Deployment model: hybrid
Build integration: api

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JS-Confuser

Purpose: JS-Confuser obfuscates JavaScript to make code harder to understand, copy, reuse, or modify while preserving its functionality.
Open source: The maker describes JS-Confuser as free and open source.
Browser playground: The playground lets users paste JavaScript, configure options, obfuscate it, and download the result.
Local processing: The playground runs entirely in the browser, including offline, and says input code and actions are never sent to a remote server.
Presets: JS-Confuser includes Low, Medium, and High presets, and users can create custom configurations.
Obfuscation options: Options include variable renaming, string concealing, control-flow flattening, dead-code insertion, domain locks, date locks, and tamper protection.
Programming API: The API provides JSConfuser.obfuscate for source code and JSConfuser.obfuscateAST for Babel ASTs.
Targets: The editor offers Browser and Node.js as output targets.
Formatting and configuration: The playground includes Prettier and lets users edit JSConfuser.ts as a JSON representation of obfuscator settings that can also include custom implementations.
Known tradeoffs: The maker says obfuscation can increase performance overhead and file size, and may break a program in some cases.
Security limitation: The maker says obfuscation is not foolproof and determined reverse engineers may deobfuscate code or extract sensitive information.
Tamper protection constraints: Tamper Protection requires eval and non-strict mode, may break code, and must be enabled manually due to arbitrary code execution concerns.
Integrations: The maker links to an NPM package and GitHub repository; its roadmap lists Webpack and build plugins as planned features.
Founded: 2020
Price from: Free

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Where it ranks on The Geeks Club

Best Code Obfuscation Software in 2026#10 of 30

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Sources

js-confuser.com· checked 30 Sept 2026
js-confuser.com/docs/getting-started/playground· checked 30 Sept 2026
js-confuser.com/docs/presets· checked 30 Sept 2026
js-confuser.com/docs/options· checked 30 Sept 2026
js-confuser.com/docs/getting-started/usage· checked 30 Sept 2026
js-confuser.com/editor· checked 30 Sept 2026
js-confuser.com/docs/getting-started/faq· checked 30 Sept 2026
js-confuser.com/docs/options/tamperprotection· checked 30 Sept 2026