SQL Formatter
FormattersInstantly format SQL queries for MySQL, PostgreSQL, MS SQL, Oracle and SQLite. Uppercase keywords, configurable indentation, dialect-aware. 100% browser-based.
About SQL Formatter
The SQL Formatter is a dialect-aware, browser-based tool that instantly beautifies raw or minified SQL queries into clean, consistently indented output. Powered by the sql-formatter library running in a Web Worker, it supports MySQL, PostgreSQL, MS SQL Server (T-SQL), Redshift, and standard SQL — with automatic keyword uppercasing and configurable indentation. Your queries never leave the browser.
Features
- ✓Supports MySQL, PostgreSQL, MS SQL Server (T-SQL), Amazon Redshift, and standard SQL dialects
- ✓Automatic SQL keyword uppercasing (SELECT, FROM, WHERE, JOIN, etc.)
- ✓Configurable indentation: 2 spaces, 4 spaces, or tab
- ✓Web Worker execution — formatting never blocks the UI
- ✓Syntax-highlighted editor for both input and output
- ✓One-click clipboard copy of formatted output
- ✓Real-time byte-savings stats (input vs output size)
- ✓Language picker — instantly switch to any of 20+ other formatters
- ✓Load example SQL query with one click
- ✓Mobile-responsive layout with a dedicated Format button
- ✓100% client-side — no data is ever uploaded
Common Use Cases
- Cleaning up minified or hand-written SQL queries before committing to source control
- Reviewing stored procedures and complex JOINs in a readable, indented layout
- Formatting SQL queries before pasting into documentation or code reviews
- Debugging long WHERE clauses and nested subqueries by expanding them visually
- Standardising keyword casing across a team's SQL codebase
- Preparing readable SQL for inclusion in tickets or bug reports
Frequently Asked Questions
QWhich SQL dialects are supported?
MySQL, PostgreSQL, Amazon Redshift, MS SQL Server (T-SQL / MSDAX), and standard SQL. Select the dialect from the language picker to apply dialect-specific formatting rules.
QDoes the formatter validate SQL syntax?
The formatter will surface parse errors from the sql-formatter library if the input is structurally invalid, but it is not a full SQL validator. Use a database client or linter for strict validation.
QIs my SQL data sent to a server?
No. All formatting is performed locally inside your browser using a Web Worker. Your queries never leave your device.
QCan I format stored procedures and multi-statement scripts?
Yes — the formatter handles multi-statement SQL files including stored procedures, DDL (CREATE, ALTER, DROP) and DML (SELECT, INSERT, UPDATE, DELETE) in a single pass.