SQL Formatter
Format SQL in your browser.
This runs in your browser. Nothing is uploaded.
Drop a file here or choose oneChoose file
Format SQL privately
TheDevTab formats SQL only. It does not run queries, connect to a database, or execute SQL.
The pretty print is dialect-agnostic and stays in your browser. Nothing is uploaded while you work.
Dialect-agnostic formatting
The formatter applies readable spacing, indentation, and clause breaks without trying to identify every feature of PostgreSQL, MySQL, SQLite, SQL Server, or another database. Common statements are easier to scan after formatting, but unusual operators, vendor extensions, and procedural syntax may remain close to their input layout. Check the output against the dialect your database accepts.
Formatting is not parsing. The page does not build a database-specific syntax tree, resolve table names, or know the schema behind a query. A result that looks tidy can still contain a missing table, an invalid function, an unsafe filter, or a query that takes too long.
Formatter versus linter
A formatter changes presentation so humans can review a query. A linter checks rules such as naming, joins, selected columns, and prohibited functions. This tool is not a linter and does not replace a database parser, migration check, query plan, or code review. Run those checks in the environment that has the correct dialect and permissions.
It also never connects to a database or runs the query. That is intentional. Paste a sample query or a redacted statement, format it, and review the output before sending it to your normal development tools. If you need to test a pattern in a query string, theRegex Tester also runs locally.
Use the output as a review aid
Start with a query that has clear clauses and string literals. Use the Sample action to see the spacing rules, then paste your own SQL and compare the before and after text. Keep comments and vendor syntax under review because a generic pretty printer cannot know their intent. The formatted result stays in your browser until you copy or download it.
FAQ
Does TheDevTab upload my SQL?
No. TheDevTab formats your SQL in the browser, and your query is not uploaded or sent to a server.
Does the SQL Formatter run queries?
No. This tool only formats SQL text. It never connects to a database or executes a query.
Which SQL dialects does TheDevTab support?
The formatter is dialect-agnostic and applies lightweight spacing, keyword, and clause rules without trying to parse or validate a specific database dialect.
Can I try the SQL Formatter with a sample?
Yes. Select Sample to format a small query that includes TheDevTab, then copy or download the formatted SQL.
Is the SQL Formatter a linter?
No. It changes spacing and layout for readability, but it does not prove that the query is valid for a particular database or that it follows your team rules.
Will formatting change what my query returns?
The tool is intended to change whitespace and layout only. Review the output before running it, especially when your input contains unusual dialect syntax or string literals that resemble SQL keywords.