System migration check
Use a record ID to verify which rows exist in both source and destination exports.
Private • Fast • Browser-based
Compare two CSV or Excel tables by key
Import two tables and select the key column that identifies each record. Find matching keys, missing rows and duplicate keys while both files stay in your browser.
✓ No server upload✓ CSV & Excel✓ No signup
A
Table A
B
Table B
Matching settings
Comparison type
Ways to use it
Resolve everyday list work faster
Catalog reconciliation
Compare product or asset codes across two table versions without depending on row order.
Membership audit
Use member numbers to find records missing from either of two exported tables.
Snapshot comparison
Reconcile dated table snapshots by a stable reference instead of their row positions.
How it works
Results in three steps
- 1Add your listsPaste them or select columns from files.
- 2Choose matching rulesTune normalization and threshold for your data.
- 3Review and exportCheck categories and download CSV or Excel.
Frequently asked questions
What to know
Do the rows need to be in the same order?
No. Records are paired by the key columns you select.
What should I use as a key?
Choose a stable ID, code or reference that identifies a record. Duplicate keys are reported separately.