Compare files. Find every change.
ExactDiff compares spreadsheets, data, documents, and images in your browser. Your files never leave your device.
One precise toolkit for every kind of change
Compare Excel files online
Find changed cells, values, rows, and sheets. Content is processed in your browser and not sent to the application server. Everything runs locally, with no account required.
Compare Excel files onlineOne precise toolkit for every kind of change
Browse all 14 toolsSpreadsheets
Excel CompareFind changed cells, values, rows, and sheets. Content is processed in your browser and not sent to the application server.XLSX · CSVCSV Compare by KeyMatch reordered rows using one or more identifying columns.CSV · TSVSpreadsheet ReconciliationResolve additions, removals, duplicates, and mismatches with an exportable audit trail.XLSX · CSVExcel Formula DiffCompare workbook formulas separately from displayed values.XLSXSpreadsheet AuditorInspect formulas, errors, hidden sheets, blank headers, and risky workbook structure.XLSX
Data
Compare Two ListsFind overlap, unique values, and duplicate counts in two lists.PASTE · TXTDuplicate Row FinderDetect exact duplicate records in a spreadsheet or delimited file.XLSX · CSVJSON DiffCompare JSON objects semantically while ignoring object key order.JSON · PASTEXML & YAML DiffCompare structured documents by path instead of line position.XML · YAML
Documents
Images
Code
Evidence, not guesswork.
ExactDiff uses deterministic comparison rules. You choose the key, tolerance, and normalization; the report records what was applied.
- 01Choose local files
The browser reads only the files you select.
- 02Set the matching rules
Control keys, whitespace, case, and numeric tolerance.
- 03Review every exception
Filter changes and download a portable CSV report.