I am comparing HTML files, but they often contain sections of text that render as paragraphs on the page. Our code beautifier adds hard line breaks after 120 characters, which yeah isn't great, we are working on that

The problem is, when we make textual changes, the hard breaks are changed. So for example we go from this:
This text is on line 1,
and this is on line 2,
and this is on line 3.
to this:
This text is on line 1,
and this is now
on line 2, and this is on line 3.
What I want is for that to only highlight one difference, the addition of the word 'now'. Is there a way to have that happen? At the very least, the word 'now' should be highlighted with a different color than the rest of the text that changed, but its not, and therefore difficult to spot. Thanks for any help.