Multi-Dialect SQL Pretty Printer & Minifier
v15 Multi-EngineFormat messy, tangled SQL queries (PostgreSQL, MySQL, SQLite, Snowflake, BigQuery, T-SQL) with customized indentation, uppercase keywords, and compact minification. Runs purely in your local browser with absolute privacy.
PostgreSQL
Handles dollar quotes ($$...$$), CTEs (WITH RECURSIVE), JSONB operators (->>), and window frame offsets.
MySQL & MariaDB
Supports backtick quotes (`table`), ON DUPLICATE KEY UPDATE, index force hints, and multi-joins.
SQLite & Embedded
Embedded SQL engine with strict type tables, upsert clauses (ON CONFLICT DO UPDATE), and lightweight transactions.
Snowflake & BigQuery
Cloud data warehouse queries with QUALIFY, LATERAL FLATTEN, and semi-structured VARIANT/STRUCT paths.
Frequently Asked Questions & SQL Formatting Best Practices
Why SQL pretty printing matters for pull requests, database indexing, and query plan debugging.
Are my database queries and secrets safe?
Yes, completely. 100% of formatting, tokenization, and minification occurs in your browser via WebAssembly/pure JavaScript AST parsers. Absolutely zero bytes leave your machine, preventing accidental leaks of confidential tables, client emails, or API credentials.
Why should I uppercase SQL keywords?
Uppercasing reserved SQL keywords (SELECT, FROM, JOIN, WHERE) creates immediate visual contrast against lowercase table and column identifiers. This speeds up code reviews and prevents subtle syntax oversights.
When should I use SQL Minification?
SQL minification compresses queries by stripping comments and redundant whitespace. This reduces network payload sizes in microservices, decreases memory usage when storing SQL strings in application binaries, and saves log storage space.
What if my query contains custom placeholders or ORM parameters?
The engine safely formats queries containing positional parameters like $1, $2 (PostgreSQL), ? (MySQL/SQLite), or named parameters like :user_id and @tenant_id without corrupting parameter tokens.