Sheet Change Detector

Shows what changed in a Google Sheets spreadsheet, cell by cell.

Find what changed in your spreadsheet without checking every cell by hand. Sheet Change Detector helps you compare Google Sheets tabs and ranges, identify changed values and formulas, and review differences in a clear results table. Use it to check updated reports, reconcile spreadsheet exports, review revised lists, or compare current data with a saved snapshot. Compare the way your data works • Compare two tabs or selected ranges in Google Sheets. • Choose cell values, formula text, or both. • Match rows by a key column, whole-row content, or row position. • Review changed, added, and removed cells. • Import CSV or Excel files for comparison. • Save local snapshots for later comparisons. • Create a Diff report in a new spreadsheet tab. Focus on meaningful differences Values mode helps you spot changes in what cells evaluate to. Formulas mode lets you examine changes in the formulas themselves. Choose Both when you need to review both kinds of differences. Match rows by a key column when records have moved, or compare by row position when order matters. Keep a report of your comparison Choose Share report to create a new report tab in your spreadsheet. Review the comparison without overwriting your existing tabs. Data and access Google sign-in is required for Google Sheets comparisons. Saved snapshots are stored locally in Chrome. Spreadsheet reads and report creation use Google’s Sheets API. Free usage limits The free version includes 5 comparisons per day, a 1,000-cell limit, and up to 25 listed differences per comparison. Sheet Change Detector is an independent Chrome extension by The apps done well.