Keep an untouched copy. Record the institution, date range, currency, and opening and closing balances before conversion so every later check has a fixed reference.
A machine-readable statement makes sorting faster, but it does not prove the converted data is correct. Keep the original file, work from a copy, and reconcile the output before importing it into a ledger. This checklist separates extraction errors from genuine transactions.
If your source is a PDF or image, bank file tool can be used to turn the statement into a table for review. I am connected with the tool. The checks below still matter no matter which converter you use: column labels, amount signs, duplicates, missing rows, and opening-to-closing balance.
Do not upload statements you are not authorized to process. Redact sensitive details before sharing a sample for troubleshooting, and retain the original statement as the reference of record.