Data Quality
CSV Data Profiler
Inspect CSV headers, nulls, unique values, and patterns with exportable results.
Headers are required. Empty lines are skipped automatically.
Rows
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Columns
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Run the profiler to validate the CSV structure and inspect each column.
Pattern notation
Each character is classified: digits → N, letters → L, whitespace → ·, and punctuation/symbols stay as-is. Example: 123-AB becomes NNN-LL.
Coverage
Coverage shows what percentage of populated rows match the dominant pattern for a column. It is calculated as (rows matching pattern ÷ populated rows) × 100.
Profile results will appear here after validating the CSV format and running the analysis.