TidyRecon Open the app

Compare two CSV files

Free, up to 1,000 rows across both files. They are read in this tab and never uploaded.

Rows are matched on the first column of each file. To choose the key, clean the files, or rerun next month, open the app.

What it checks

Both files are read with their encoding, delimiter and header row detected. Each row of the left file looks for a row in the right file with the same value in the first column. The count of matches is the result.

It does not compare the other columns, keep a history, or carry unmatched rows to next month. That is what a recipe in the app does, as on the right.

What the app adds: a rerun11 of 13 matched · closed 2024-02-29
OrderStatusSinceAge
SO-0998 Only in shipments 2024-01-02 58days
SO-1007 Values differ 2024-01-15 45days
SO-1009 Matched 2024-01-27 closed 2024-02-03
SO-1011 Matched 2024-01-30 closed 2024-02-06

Nothing is uploaded

The files are read by this tab with the browser’s own file reader. The page’s security policy allows requests to this site only, so there is nowhere for a file to go. Check it yourself.

Response header/app
Content-Security-Policy:
  default-src 'self';
  connect-src 'self';