Bank CSV Normalizer is a free, privacy-first browser tool for cleaning messy bank CSV files. It standardizes inconsistent fields and formats, removes duplicate rows, fixes malformed data, and produces a cleaner CSV for spreadsheets or analysis. Processing happens locally in your browser, there are no bank connections and your CSV data is not uploaded to a server. It's designed for people who want a simple way to prepare transaction data without handing financial files to another service.
Bank CSV exports are often inconsistent and require repetitive cleanup before they're useful in spreadsheets or analysis. I wanted a simpler option that didn't require connecting a bank account or uploading sensitive transaction files to a third party. Bank CSV Normalizer was built to make that cleanup fast, private, and accessible directly in the browser.