Scrub Unwanted <HTML>
Paste Dirty Text, then Select & Copy Clean Text
What is "dirty" text?
Example: Let’s copy and paste a snippet of the transcript for this HTML crash course video on YouTube
Dirty
Pasted into Google Keep:

…
Clean
Pasted into the Text Tool*:

* Notice how the “clean” text retains line breaks. Click “Remove Line Breaks” to remove them.