Can JavaScript be obfuscated?

JavaScript obfuscation is a series of code transformations that turn plain, easy-to-read JS code into a modified version that is extremely hard to understand and reverse-engineer. Unlike encryption, where you must supply a password used for decryption, there’s no decryption key in JavaScript obfuscation.

How do you run obfuscated in JavaScript?

If you have Google Chrome, open the web page that has the JavaScript you are trying to decrypt. Press F12 to open Developer Tools inside Chrome. Now switch to the Scripts tab, right-click and choose De-obfuscate source. That’s it!

How does JavaScript obfuscation work?

How does the obfuscation work? Through a series of transformations, such as variable / function / arguments renaming, string removal, and others, your source code is transformed into something unreadable, while working exactly as before.

Is obfuscated Javascript slower?

3 Answers. It certainly does slow down the browser more significantly on older browsers (specifically when initializing), but it definitely slows it down even afterwards.

Is obfuscated JavaScript slower?

How can I protect my JavaScript code?

One of the ways to protect your code is to obfuscate it to encrypt the code and make it unreadable.

1. Protect your code and intellectual property.
2. Compact js to also make file size smaller and increase page speed.
3. Work with jQuery!, NODE.
4. Always to preserve the operational qualities of the code.

How do you obfuscate HTML code?

Obfuscate HTML using an Online Tool

1. Open a Web browser and navigate to iSnoop.net or VoorMedia.com.
2. Click the “HTML Obfuscator” link on the main page in iSnoop.net.
3. Copy your HTML code by dragging the mouse over the desired code in the HTML editor, and the right-clicking the mouse.

Is obfuscated code slower?

Conclusions. The more advanced obfuscation is used, the slower the obfuscated code is executed. Name obfuscation does not affect the performance and should always be used.

What is the obfuscated JavaScript tool?

This tool transforms your original JavaScript source code into a new representation that’s harder to understand, copy, re-use and modify without authorization. The obfuscated result will have the exact functionality of the original code. So, it is like UglifyJS, Closure Compiler, etc?

What is the decryption key in JavaScript obfuscation?

Unlike encryption, where you must supply a password used for decryption, there’s no decryption key in JavaScript obfuscation. In fact, if you encrypt JavaScript on the client-side, that would be a pointless effort—if we had a decryption key we needed to supply to the browser, that key could become compromised and the code could be easily accessed.

Is it worth it to obfuscate your code?

The obfuscators are getting a little better about it, but many outfits decide that they see enough benefit from minifying and gzipping, and the added savings of obfuscation isn’t always worth the trouble. If you’re trying to protect your source, maybe you’ll decide that it’s worth your while, just to make your code harder to read.

What is the best JavaScript obfuscator for ES2017?

JavaScript Obfuscator Tool. A free and efficient obfuscator for JavaScript (including ES2017). Make your code harder to copy and prevent people from stealing your work. This tool is a Web UI to the excellent (and open source) javascript-obfuscator @0.18.1 created by Timofey Kachalov.