Does the formatter validate my SQL for errors?

It formats based on syntax rules but does not execute the query, so it cannot catch runtime errors like wrong table names or type mismatches.

Can I format very long queries with many JOINs?

Yes. The formatter handles arbitrarily complex queries including multiple CTEs, nested subqueries, window functions, and many JOIN clauses.

Is my SQL saved or sent to a server?

All formatting runs in your browser using the sql-formatter library. Your queries are never sent to any server. History is saved locally in localStorage.

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SQL Formatter

Format and beautify SQL queries securely in your browser. Your database queries are never sent to a server—100% private SQL formatting.

Built & maintained by Shakeel Ahmed · Full-Stack Developer & Privacy Tools Builder

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SQL input

Formatted output

Formatted SQL appears here

History saved locally

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SQL Formatter

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