github.com/wickedest/Mergely provides editor.mergely.com, which allows a user to generate a .diff file [1] of two inputs corresponding to git-diff syntax that VS Code and GitHub correctly syntax highlight.
github.com/wickedest/Mergely
editor.mergely.com
.diff
git-diff
-,https://mergely.com,-Mergely%20is%20a){kind=link}