SQL Formatter

SQL (Structured Query Language) is the universal language for managing and querying relational databases. Writing clean, readable SQL is essential for collaboration, debugging, and long-term maintenance. However, SQL queries often arrive compressed into a single line from ORMs, logs, or legacy code, making them nearly impossible to understand at a glance. This SQL Formatter tool instantly transforms messy, unindented SQL into clean, readable code. It supports seven major SQL dialects: generic SQL, MySQL, PostgreSQL, T-SQL (SQL Server), SQLite, BigQuery, and Spark SQL. Each dialect has its own syntax nuances, and the formatter respects them — for example, PostgreSQL-specific syntax like dollar-quoting and BigQuery's backtick identifiers are all handled correctly. The formatter provides several key options. The indent size setting controls whether keywords and clauses are aligned with 2 or 4 spaces. The keyword case option lets you choose between UPPERCASE and lowercase keywords — UPPERCASE is the SQL standard and makes keywords visually distinct from identifiers, while lowercase is preferred by some teams for readability in codebases. The minify mode does the opposite of formatting: it collapses a formatted SQL query into a single compact line. This is useful when embedding SQL in application code, environment variables, or configurations where whitespace is unnecessary or problematic. Developers use SQL formatters constantly when reviewing query execution plans, debugging slow queries, writing database migrations, reviewing pull requests involving database changes, and learning SQL syntax. DBAs use them to standardize SQL style across teams and code reviews. All processing happens entirely in your browser using the open-source sql-formatter library. No SQL is ever sent to a server, making this tool safe for formatting queries that contain sensitive column names, table names, or data patterns.