SQL Formatter
Format and beautify your SQL queries instantly.
Select your specific SQL dialect (MySQL, PostgreSQL, etc.) to ensure correct syntax highlighting and indentation.
Perfect for cleaning up complex queries, debugging generated SQL, or preparing code for review.
High-Performance SQL Formatter
Beautify and format unreadable, minified, or overly complex SQL queries extracted from applications and log files. This tool applies appropriate indentation, line breaks, and reserved keyword highlighting.
Supported Databases and Applications
It widely supports standard relational database dialects including MySQL, PostgreSQL, SQL Server, Oracle, and BigQuery.
Improving query readability is often the shortest path to discovering logic bugs, especially when tuning performance for massive SQL queries automatically generated by ORMs or during team code reviews.
Since everything runs client-side in your browser, your proprietary schema structures and queries never leave your device.
When to format SQL
- Before code review: Make complex queries easier for teammates to scan.
- While debugging ORM output: Reformat generated SQL from logs before checking joins and filters.
- During performance tuning: Add line breaks and indentation before investigating WHERE clauses, GROUP BY, and nested queries.
Practical note
Formatting improves readability, but it does not guarantee that a query is correct or fast. Always test the formatted SQL against the target database and review execution plans for performance-sensitive changes.
Articles for this tool
Efficiently Format SQL in Your Browser: Why We Built This Tool
Learn about the background and features of our browser-based SQL formatter, designed to beautify and organize your queries safely and locally.
Use a SQL formatter before review to make queries easier to read
A practical workflow for formatting long SQL queries so JOIN, WHERE, GROUP BY, and ORDER BY clauses are easier to review.
Design notes for building JOIN queries with a Visual SQL Builder
A practical workflow for using a Visual SQL Builder to assemble SELECT, JOIN, and WHERE clauses without losing track of table relationships.
Recent Articles
Use a SQL formatter before review to make queries easier to read
A practical workflow for formatting long SQL queries so JOIN, WHERE, GROUP BY, and ORDER BY clauses are easier to review.
Visualize GitHub Actions needs dependencies with Mermaid
A practical workflow for reading complex GitHub Actions workflow YAML by separating job dependencies from step details.
Common pitfalls when drawing infrastructure diagrams with Mermaid
A practical guide to organizing node names, arrows, and diagram scope when building infrastructure diagrams with Mermaid in the browser.
Generate Mermaid ER diagrams from SQL DDL to review table relationships
A practical workflow for turning CREATE TABLE statements into Mermaid ER diagrams and checking foreign keys before a schema review.
Design notes for building JOIN queries with a Visual SQL Builder
A practical workflow for using a Visual SQL Builder to assemble SELECT, JOIN, and WHERE clauses without losing track of table relationships.
Convert CSV and JSON to check data faster
A practical workflow for moving between CSV exports, API responses, and spreadsheet-style review without losing track of fields.