HTML encryption tools cannot truly secure web source code because the browser must always decrypt it to display the page. While these tools can stop casual users from copying code using the “View Source” command, any user with basic knowledge can easily bypass them using browser developer tools (Inspect Element) or simple online decrypters.
Using an HTML encryptor is more accurately called obfuscation. Here is a comprehensive breakdown of how they work, how to use them, and the best ways to actually secure your project. How HTML Encryptors Work
Standard online HTML encryptors—such as HTML Code Generator or ISDN*tek—scramble raw code so humans cannot read it. The Input: You paste your standard HTML into the tool.
The Obfuscation: The tool converts your text into character codes, hex codes, or a Base64 string.
The Script Wrapper: The tool packages this scrambled string into a piece of JavaScript containing a function like document.write(unescape(scrambledString)).
The Execution: When a browser loads the file, the built-in JavaScript executes on the fly, unscrambling the code into real HTML to render the website layout. Encrypt html code in source view – Stack Overflow
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