SQL Formatter & Beautifier

A SQL formatter rewrites the whitespace of a query without changing its meaning. It places each major clause (SELECT, FROM, WHERE, GROUP BY, ORDER BY) on its own line, indents nested expressions and subqueries, and normalizes keyword casing. A 400-character one-line query that takes a minute to read becomes a 15-line statement whose structure is obvious at a glance.

This tool uses the open-source sql-formatter library, which actually tokenizes the query rather than applying naive find-and-replace rules. That is why the dialect setting matters: PostgreSQL allows double-quoted identifiers and casts like ::int, MySQL uses backticks, and T-SQL uses square brackets — each dialect is parsed with its own grammar so string literals, comments, and identifiers are never mangled.

Minify mode does the opposite: it removes comments and collapses all runs of whitespace into single spaces (while preserving whitespace inside string literals), which is useful for embedding a query in a log line, an environment variable, or a single-line configuration value.