CSV Column Profiler
Profile CSV columns locally to find counts, blanks, unique values, likely data types, ranges, and row-shape warnings.
Paste CSV or choose a local CSV file to inspect each column before importing, mapping, or cleaning it. The profiler reports row counts, blank cells, distinct values, repeated values, likely value families, length ranges, numeric ranges, and common row-shape warnings without sending data anywhere.
Selecting a file replaces the pasted input. Files are read by this page on your device only.
How to use
Choose the delimiter and whether the first row contains names, then profile the CSV. The summary highlights total rows, detected columns, blank cells, distinct values, repeated values, likely value families, text length ranges, numeric ranges, and rows that have more or fewer fields than expected.
Use the top-value setting to keep the report short or expand it when you need a quick look at repeated categories. The table is useful for scanning columns on screen, while the summary can be copied or downloaded for notes and review tickets.
The profiler is intended for practical data-quality checks, not full spreadsheet analysis. It does not evaluate formulas, validate business rules, or guarantee a database schema. Very large files may be slow in a browser tab, and private data should only be opened on devices and pages you trust.
