Is my SQL query uploaded to a server?

No. All processing happens 100% in your browser. Your queries never leave your computer.

Can I open multiple SQL files at once?

Yes. The SQL formatter supports true multi-tab editing where each file opens in its own tab with completely independent formatting state, undo history, and session persistence.

Can I customize keyword casing?

Yes. You can choose between UPPERCASE (e.g., SELECT, FROM, WHERE) and lowercase (e.g., select, from, where) for all SQL keywords.

What indent styles are supported?

The formatter supports Standard indentation, Tabular Left (aligns columns to the left), and Tabular Right (aligns columns to the right) — selectable per session.

Does this tool support workspaces and folders?

Yes. You can organize your SQL files into folders, create multiple workspaces, and switch between them. All state persists across browser sessions.

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SQL Formatter Online — Free Tool

Beautify and format SQL queries instantly in your browser. Supports 21 SQL dialects, customizable keyword casing, and full multi-tab workspace with session persistence.

Why Format SQL?

Readability: Well-formatted SQL is easier to understand and review
Debugging: Spot logical errors and missing clauses faster
Code Review: Clean formatting makes team reviews more productive
Documentation: Formatted queries are easier to include in documentation
Consistency: Enforce a uniform SQL style across your team

Features

21 SQL Dialects: Standard SQL, MySQL, PostgreSQL, MariaDB, SQLite, TSQL, Transact-SQL, DB2, DB2 iSeries, PL/SQL, BigQuery, Redshift, Spark, Hive, Trino, Snowflake, SingleStoreDB, N1QL, ClickHouse, DuckDB, TiDB
Keyword Capitalization: Choose between UPPERCASE and lowercase keywords
Indentation: Customizable 2-space or 4-space indentation
Indent Styles: Standard, Tabular Left, or Tabular Right alignment
Multi-Tab Editing: Work with multiple SQL files simultaneously
Workspace Persistence: Sessions survive browser refreshes
File Operations: Upload .sql files, download formatted output
Real-Time Validation: Instantly validate SQL syntax
Auto-Correct: Automatically fix common formatting issues
Minification: Compact SQL for storage or transmission
Privacy-First: 100% browser-based, zero server uploads

How to Use

Select a dialect from the command panel (e.g., MySQL, PostgreSQL)
Paste or type your SQL query in the input editor
Choose formatting options: indent size, keyword case, indent style
Click Format to beautify your SQL
Review the formatted output and copy or download it
Use tabs to work with multiple files simultaneously

Privacy & Security

All SQL processing happens entirely in your browser using the sql-formatter library. Your queries never leave your computer, making this tool completely private and secure for sensitive database code.

Tips

Use Validate to check SQL syntax before execution
Switch dialects when working with different database systems
Use Auto Correct to fix minor formatting inconsistencies
Use Ctrl+B to toggle the sidebar for more workspace space
Use Ctrl+E to quickly copy formatted output to clipboard
Create folders in the sidebar to organize related queries

Why Format SQL?

Readability: Well-formatted SQL is easier to understand and review

Debugging: Spot logical errors and missing clauses faster

Code Review: Clean formatting makes team reviews more productive

Documentation: Formatted queries are easier to include in documentation

Consistency: Enforce a uniform SQL style across your team

Features

21 SQL Dialects: Standard SQL, MySQL, PostgreSQL, MariaDB, SQLite, TSQL, Transact-SQL, DB2, DB2 iSeries, PL/SQL, BigQuery, Redshift, Spark, Hive, Trino, Snowflake, SingleStoreDB, N1QL, ClickHouse, DuckDB, TiDB

Keyword Capitalization: Choose between UPPERCASE and lowercase keywords

Indentation: Customizable 2-space or 4-space indentation

Indent Styles: Standard, Tabular Left, or Tabular Right alignment

Multi-Tab Editing: Work with multiple SQL files simultaneously

Workspace Persistence: Sessions survive browser refreshes

File Operations: Upload .sql files, download formatted output

Real-Time Validation: Instantly validate SQL syntax

Auto-Correct: Automatically fix common formatting issues

Minification: Compact SQL for storage or transmission

Privacy-First: 100% browser-based, zero server uploads

How to Use

Select a dialect from the command panel (e.g., MySQL, PostgreSQL)

Paste or type your SQL query in the input editor

Choose formatting options: indent size, keyword case, indent style

Click Format to beautify your SQL

Review the formatted output and copy or download it

Use tabs to work with multiple files simultaneously

Tips

Use Validate to check SQL syntax before execution

Switch dialects when working with different database systems

Use Auto Correct to fix minor formatting inconsistencies

Use Ctrl+B to toggle the sidebar for more workspace space

Use Ctrl+E to quickly copy formatted output to clipboard

Create folders in the sidebar to organize related queries

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