Structured Data
Data Type Detector
Paste CSV, TSV or other delimited values and instantly see the likely type and nullability of every column, plus a ready-to-copy schema. Runs entirely in your browser — your data never leaves the page.
Tabular data
pasted valuesAuto-detect recognises comma, tab, semicolon and pipe delimiters, including quoted fields with embedded delimiters, quotes and newlines.
Detected types
liveNo data yet
Paste delimited values above or load the example to detect column types.
| Column | Detected type | Nullable | Nulls | Unique | Example |
|---|
Generated schema
How it works
Each value is classified against a ladder of types, from the most specific (boolean, integer, UUID, email, date…) down to plain text. A column keeps the most specific type that every non-empty value fits, so mixed integers and decimals become a number column, and a mix of dates and timestamps becomes a date/time column. A column is marked nullable when any cell is empty. The schema is generalised from those results and all processing happens locally.