Protect License in JavaScript

Hi Team,

We are maintaining PDFTron license in JavaScript code, but it is somehow easily exposed as we can get the client code in Browser(even if it is minified). Is there any way to protect a license string in such a way that it should not be exposed to the user?

Gowtham C

Hi Gowtham,

We are not aware of any truly reliable way to hide a license key string used by a JavaScript framework. Since the license key needs to be in client side JavaScript it’s not going to be possible to completely remove this risk. To make it more difficult for someone inspecting the code then you could run some obfuscation function on the string beforehand and then unobfuscate it in JavaScript before passing it to WebViewer. For example You could also run your WebViewer creation code through a JavaScript obfuscator to make it more confusing to read.

Best Regards,
Armando Bollain
Software Developer
PDFTron Systems, Inc.

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