Spreadsheet Cleanup Checklist

Audit messy spreadsheet or CSV data for blank cells, duplicate rows, risky headers, formatting issues, and cleanup steps before importing or sharing.

Upload CSV or text file
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Load a sample or paste your data to begin.

Free Online Spreadsheet Cleanup Checklist

Paste a small CSV sample or upload a file to generate a practical cleanup plan with detected blanks, duplicates, suspicious headers, and recommended spreadsheet hygiene steps. Processing runs locally in the browser.