SQL Formatter (Beautify, Indent, Pretty Print)

Beautify complex SQL queries instantly. Add proper indentation and fix keyword casing for better readability.

Format and beautify SQL queries. Supports MySQL, PostgreSQL, Oracle.

A localized syntax engine built to untangle massive database logic. Paste terrifyingly dense, single-line SQL queries exported from slow-query logs and instantly beautify them into readable, properly indented hierarchies. Support for Postgres, MySQL, and Standard SQL dialects, running entirely offline to protect proprietary database schemas.

How this page is maintained

  • Steps and copy are checked against the current tool behavior.
  • Browser limits, file-size constraints, or compatibility gaps are documented when relevant.
  • Unless a page explicitly says otherwise, files and text stay in the browser during processing.

Taming the Query Chaos

Every backend developer and DBA has experienced it: pulling a massive, 800-character SQL query out of an APM dashboard or a slow-query log, only to find it entirely Minified on a single line. Without indentation or casing, debugging a missing parenthesis or a rogue LEFT JOIN is functionally impossible. Our SQL Formatter acts as a structural de-obfuscator.

Dialect-Aware Beautification

Generic spacing algorithms destroy SQL syntax. The intelligence of our engine lies in its dialect awareness. Before formatting, simply select your target database architecture (PostgreSQL, MySQL, or Standard SQL). The parser intelligently respects dialect-specific operators, capitalizing core commands (e.g., SELECT, WHERE, GROUP BY) while aggressively breaking complex nested subqueries into a readable, cascading visual hierarchy.

Protecting Your Proprietary Schemas

A core tenet of cybersecurity is protecting your system architecture. Pasting a complex query into a cloud formatter exposes the exact names of your users table, your billing_records, and the specific primary keys you utilize. We compiled the formatter logic directly into a client-side bundle; your proprietary query strings never leave your local DOM.

Key features

  • Multi-Dialect Support: Select your specific database flavor (MySQL, PostgreSQL, Standard SQL) to ensure the formatter respects dialect-specific syntax and functions.
  • Intelligent Beautification: Automatically breaks long logical expressions and nested subqueries into a structured hierarchy that makes logic errors easy to spot.
  • Keyword Standardization: Enforces UPPERCASE for SQL keywords (like INSERT, UPDATE) while keeping your table and column names intact, adhering to best practices.

Frequently asked questions

Does it validate my query?

It focuses on formatting (pretty-printing). While it can parse valid SQL structure, it does not connect to a database to verify table existence or logic.

Is it safe for production queries?

Yes, your queries are processed locally in the browser. No database credentials or query text are ever sent to an external server.

Can it handle minified SQL?

Yes, paste a single massive line of SQL, and it will be expanded into a readable, indented block instantly.

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