Often times, you may want to see changes between two latex files: let’s say old.tex and new.tex file.
There is a simple workaround that creates diff.tex file using latexdiff. I have tried to use texdiff and compiled using texshop but it spits lots of errors (protect/TLS ….).
Alternative is using latexdiff and it works like charm in my case. Locate two tex files in a folder and run the following command.
latexdiff old.tex new.tex > diff.tex
You should be able to compile diff.tex file if you can compile new.tex and old.tex files. The below is an example how it looks like.