Format, beautify, and minify SQL queries with syntax highlighting and dialect support
Paste SQL in the input pane and click Format
No. The SQL formatter is a 100% client-side tool. Your query text is tokenized and reformatted entirely in your browser without any network requests. This makes it safe to format proprietary or sensitive database queries.
The formatter supports MySQL, PostgreSQL, SQLite, SQL Server (T-SQL), and Oracle SQL. Dialect selection controls identifier quoting (backtick vs double quote), specific keyword handling, and function name casing differences between database engines.
Yes. Toggle the Minify switch to compress your query into a single-line form with minimal whitespace — useful for embedding SQL in application code, reducing payload size, or generating compact queries for comparison and diffing.
Consistent formatting makes SQL queries easier to read during code review, debugging, and maintenance. When clauses like SELECT, FROM, WHERE, and JOIN each start on a new line, the logical structure of a query is immediately visible — especially for complex multi-join queries or nested subqueries.
MySQL uses backtick quoting for identifiers and has AUTO_INCREMENT. PostgreSQL uses double quotes and supports richer type casting with ::. SQL Server uses [square brackets] and TOP instead of LIMIT. Oracle uses ROWNUM/FETCH FIRST for pagination. SQLite is largely compatible with standard SQL but has fewer data types.
SELECT * — Always specify columns; * fetches unnecessary data and breaks when schemas change.JOIN … ON … instead of comma-joined tables in FROM.WHERE YEAR(created_at) = 2025 prevents index use; prefer WHERE created_at >= '2025-01-01'.NOT IN with NULLs — NOT IN returns no rows if the subquery contains any NULL; use NOT EXISTS instead.Save history & custom presets — coming soon for logged-in users