Hello Paul,
I have some problems with this code:
1 - it is possible that the language in the code is configured to arbic language? Because I do not change the letter K. In Arabic is ك but in Persian is ک and the code does not replace it.
2 - The code is very heavy and it takes a long time to process the file.

I would also like to know how I can modify the code to be able to do Find & Replace in the html files?

Thank you very much