CSV Profiler

Profile a CSV in seconds. See each column's type, fill rate, unique values, min, max and top values, and get a list of data quality problems such as duplicates.

  • Free, no sign-up
  • Runs in your browser
  • Your data stays private

How to use the CSV Profiler

  1. Paste CSV text or upload a file.
  2. Read the column profile table and the data quality findings.
  3. Open Top values to see the most common entries per column.

Why use this CSV Profiler

  • Column profileType, filled percentage, unique count, min, max, mean and most common value.
  • Quality checksFinds empty and constant columns, mixed types, duplicate rows, stray spaces and invalid emails.
  • Top valuesBar charts of the five most frequent values in each column.
  • SortableSort and filter the profile table, and copy any cell.

Frequently asked questions

How do I check the quality of a CSV file?

Paste it and open the Data quality tab. Problems are ranked by severity.

How are column types detected?

Every value is checked, and a column is labelled by its main type with the number of exceptions.

Is my data uploaded?

No. Profiling runs entirely in your browser.

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