SchemaSnap
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CSV to Postgres

Postgres has its own type vocabulary: SERIAL for autoincrementing keys, NUMERIC(precision, scale) for exact decimals, JSONB for structured columns. Hand-writing that mapping for a 20-column export is slow and easy to get subtly wrong.

Paste a CSV below and SchemaSnap emits Postgres-flavored DDL directly: an integer id column becomes SERIAL PRIMARY KEY, decimal columns keep the scale seen in your data, and short repeated values become a bounded VARCHAR instead of unbounded TEXT.

Example

Run on a small sample CSV at build time, so this is real output, not a mockup.

Generated SQL (Postgres)

CREATE TABLE customers (
  id SERIAL PRIMARY KEY,
  name VARCHAR(32) NOT NULL,
  email VARCHAR(32) NOT NULL,
  plan VARCHAR(32) NOT NULL,
  price NUMERIC(10,2) NOT NULL,
  signup_date DATE NOT NULL
);

Try it

Drop a .csv file here, or click to choose one. Or just paste below.

Outputs

Paste or drop a CSV, then hit Convert. Nothing you enter here leaves your browser.

Other conversions