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Despite that, optimized code is often confused with obfuscated code. For example, compressed code is completely encoded, which at first glance may seem to be highly obfuscated, but a simple run is often enough to retrieve something very similar to the original code. In short, these tools do a good job optimizing your code, but they don't protect it. (fiddle: demo, Google Compiler optimized demo and beautified optimized demo).
JScrambler goes beyond these libraries by offering advanced obfuscation (JScrambler obfuscated version) that can protect your code. It leverages obfuscation by inserting a number of different code traps to control execution and to enforce licensing. For example, you can lock the code to a list of predefined domains. If someone tries to execute the code elsewhere, the code breaks.
As expected, these techniques have a cost in file size and execution, but because JScrambler also has optimization features, this extra cost can be controlled -- as proven by running the two protected demos. You don't have to give up performance to get protection.