Advanced File Comparison Tool
Compare two CSV, TXT or Excel files by key columns: find matching, mismatched and unique rows, with per-file aggregation, numeric tolerance and cell-level diff highlighting.
1Upload files & parsing options
2Pre-comparison aggregation (optional)
Summarise each file before comparing — e.g. group by account and SUM the amounts.
3Column mapping
Comparison key — how rows are matched between files
Value columns — checked for differences