Comparing and annotating version of LaTex documents

latexdiff.md

How to compare versions of a LaTeX project

Instructions tested on Mac OS

Tool: https://ctan.org/pkg/latexdiff

Using it with multi-file projects: https://tex.stackexchange.com/a/167894

Mac OS installation: https://tex.stackexchange.com/a/548553

With Overleaf:

1. Go to "History"
2. Select the old version > "Download project at this version"
3. Select the new version > "Download project at this version"
4. Unzip both files
5. Run latexdiff

The command below:

• Processes subfiles
• Generates one output file (--flatten)
• Handles commands that break the diff output if not flagged (--append-textcmd=...). For example the FIXme package)

latexdiff --append-safecmd="subfile" \
    --append-textcmd="chrfatal,chrnote,dsquestion,dsanswer" \
    old/main.tex new/main.tex \
    --flatten > diff.tex