Hello, @angelica-bartoloni,
As it’s my first post of 2018, allow me to wish you and every N++ user, a very productive year, with our beloved editor, a lot of opportunities and, of course, good health, throughout the year !
Well, I supposed that all your HTML files are gathered in a specific folder, aren’t they ?
The next question, Angelica, is : Where the script is supposed to be inserted, in these hmtl files ? I mean, could you give us the context ( a couple of lines before and after that insertion point ! )
Finally, if not confidential, as it shouldn’t exceed 10 lines, could you, also post the script’s contents !
With all that information, and the Built-in Replace / Replace in Files feature, it shouldn’t be very difficult to get the job done !
See you later,
Best Regards,
guy038