ObfuscatorJS Seven is a web-based JavaScript and CSS obfuscation tool that transforms readable source code into an unreadable, tamper-proof version while preserving full functionality, offering enterprise-grade protection with features like domain locking and expiration date.
What is ObfuscatorJS Seven?
ObfuscatorJS Seven is a client-side web application that takes JavaScript and CSS source code as input and outputs obfuscated code that is resistant to reverse engineering, tampering, and unauthorized use. It runs entirely in the browser (100% client-side) with no server delay, and is developed and maintained by the team behind obfuscatorjs-seven.online. It provides enterprise-grade protection for intellectual property while keeping the original code's behavior intact.
Key Features
- Control Flow Flattening — Restructures code into nonlinear execution paths that are extremely difficult to follow, while maintaining the original logic.
- String Encryption — Encrypts all string literals so they are only decrypted at runtime, making static analysis ineffective.
- Self-Defending — Detects and responds to debugging attempts (e.g., Developer Tools open) to protect against runtime analysis.
- Dead Code Injection — Inserts irrelevant code paths that never execute, creating decoy trails for would-be reverse engineers.
- Identifier Mangling — Replaces meaningful variable, function, and class names with randomized, meaningless equivalents.
- Domain Locking — Restricts execution of obfuscated code to specific domains, preventing unauthorized redistribution.
- Expiration Date — Sets a date after which the obfuscated code will no longer function.
- Encoding (Base64 / RC4) — Encodes or encrypts strings with support for Base64 or RC4 algorithms.
- Preset Configuration & Target Environment — Provides ready-to-use presets and allows targeting specific environments (browser, Node.js, etc.) for optimized output.
Who is it for?
- Web developers wanting to protect JavaScript and CSS code from being copied or reverse-engineered.
- SaaS and startup founders who need to safeguard proprietary logic in client-side applications.
- Security researchers analyzing obfuscated code for malicious intent (the tool also includes a malicious JavaScript detector).
- Educators teaching about code obfuscation and security by demonstrating obfuscation techniques.
What can you do with ObfuscatorJS Seven?
- Protect payment processors and e-commerce scripts: Obfuscate code handling sensitive transactions to prevent tampering.
- Secure API keys and configuration data: Use string encryption and domain locking to keep credentials safe from unauthorized scraping.
- Create time-limited trial software: Apply expiration dates to obfuscated code so it stops working after a set period.
- Obfuscate entire web applications: Combine all features (control flow flattening, dead code injection, etc.) to produce production-ready protected code.
How does it work?
- Paste or upload your JavaScript or CSS source code into the editor on the ObfuscatorJS Seven website.
- Choose from a wide range of obfuscation options (control flow, encryption, mangling, domain lock, etc.) or use a preset configuration.
- Click "Obfuscate Now" to generate the protected code, which can be copied or downloaded immediately.
The entire transformation happens client-side, so your code never leaves your browser.
Pricing
ObfuscatorJS Seven offers a free tier with core obfuscation features and ads. A premium tier is available for a one-time payment of $10, which unlocks all premium features, removes ads, increases message limits in the Code Assistant, removes limits on malicious detector usage, and grants access to additional tools (e.g., more image creation, startup idea validations, Bio Page Builder pages, product listings, PostBoard posts, and more).
FAQ
Is ObfuscatorJS Seven free?
Yes, the base obfuscation tool is free to use with ads. A $10 one-time purchase removes ads and unlocks additional premium features and limits.
What types of code can I obfuscate?
ObfuscatorJS Seven supports JavaScript and CSS source code. The tool also includes separate utilities for HTML and link obfuscation.
Does the obfuscation affect code performance?
No, the obfuscated code runs exactly as the original, with zero server delay and no impact on execution speed, as stated on the site.
Can I restrict my obfuscated code to specific domains?
Yes, the domain locking feature allows you to specify a list of allowed domains. The code will only execute on those domains.
What is the difference between free and premium?
The free tier includes core features with ads. Premium ($10 one-time) removes ads, provides more Code Assistant messages, unlimited malicious JavaScript detection, additional obfuscation tools, and higher limits for other site utilities.
