I built a diff tool for spreadsheets years ago: https://support.smartbear.com/collaborator/docs/working-with/materials/spreadsheets.html#view-differences https:

I built a diff tool for spreadsheets years ago: https://support.smartbear.com/collaborator/docs/working-with/materials/spreadsheets.html#view-differences https://support.smartbear.com/collaborator/docs/working-with... Never really worked all that well. I looked for research on how to diff something like that but didn't find anything useful. IIRC the diff works by "serializing" the cell grid, effectively treating each cell as a separate "line" and then running that through a conventional line-based diff algorithm.