What changed between these two Excel files? Compare them free.
Let your agent work across all your spreadsheets for you.
Upload the original and the changed version and get a plain-language list of every difference — which cells changed, what was added, and what was removed, sheet by sheet. Nothing is changed; we only read both files and compare them.
What you get
An exact, cell-by-cell comparison of two workbooks. For every sheet in either file, you see the cells that changed (the value before and after), the cells that were added, and the cells that were removed — plus whole sheets that appeared or disappeared. Download the full diff to keep a record of every change.
Read-only by design
This tool never changes either file. It reads both workbooks in memory, compares them, and discards them — nothing is saved and nothing is written back. The comparison is deterministic: the same two files always produce the same result. It's the same diff your AI agent would get from our API, just rendered for you to read.
Want this inside your AI agent, on your own machine, with no upload at all? Install xlsx-for-ai and ask Claude or Cursor to “compare these two workbooks and tell me what changed.”