DevCoreTools

SQL Prettifier

Format, prettify, and minify SQL queries online. Choose a SQL dialect, adjust formatting options, and copy clean SQL instantly.

SQL input

Paste one or more SQL statements.

Processed locally in your browser Limit 200,000 characters. Your input is processed in your browser and is not uploaded or sent to a server. Avoid pasting production secrets, access tokens, private keys, passwords, or sensitive customer data unless you understand the risk.
0 / 200,000 characters0 lines0 bytes
Formatting options

SQL output

Formatted or minified plain text.

Enter SQL to format.Your result will appear here without leaving your browser.
0 characters0 linesFormatted view

Lightweight inspection

SQL summary

Input
0 characters · 0 lines
Output
0 characters · 0 lines
Dialect
Standard SQL
Status
Waiting for input
Statements
0 estimated
Detected clauses
None detected

This is a text-based overview, not a SQL parser, validator, security scan, or execution result.

Ready-to-load examples

SQL sample queries

Choosing an example loads its SQL and changes the formatter dialect to match.

What is a SQL prettifier?

A SQL prettifier adds consistent indentation, line breaks, spacing, and keyword casing to make database queries easier to read, review, debug, and share. It changes presentation rather than the intended query logic.

Read the SQL formatting guide

How to format SQL online

  1. Paste your SQL query into the input editor.
  2. Choose the SQL dialect that best matches your database.
  3. Select indentation, casing, and spacing options.
  4. Click Format SQL.
  5. Review and copy or download the formatted result.

Supported SQL dialects

The formatter supports Standard SQL, MySQL, PostgreSQL, SQL Server / T-SQL, Oracle PL/SQL, BigQuery, Snowflake, SQLite, MariaDB, Redshift, Spark SQL, DuckDB, DB2, and Trino / PrestoSQL.

Dialect support depends on the formatter engine. This tool formats SQL for readability but does not execute or validate queries against a database.

SQL prettifier vs SQL validator

A prettifier changes whitespace and casing to improve readability. A SQL validator checks syntax and database-specific rules. DevCoreTools does not connect to a database, execute your query, or guarantee that formatted SQL is valid for a particular database version.

SQL formatter vs SQL minifier

A formatter expands SQL across readable lines with consistent indentation. A minifier conservatively reduces repeated whitespace while preserving quoted strings, comments, and semicolons. Minified SQL is compact, while formatted SQL is better for human review.

Private browser-based formatting

Formatting, minification, and summary calculations run locally in your browser. SQL text is not sent to DevCoreTools or an external formatting API. You should still avoid pasting sensitive production data when it is not necessary.

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Frequently asked questions

Is this SQL prettifier free?

Yes. It is free to use and does not require an account.

Does this tool upload my SQL to a server?

No. SQL formatting happens locally in your browser.

Which SQL dialects are supported?

The formatter supports common dialects including MySQL, PostgreSQL, SQL Server, Oracle PL/SQL, BigQuery, Snowflake, SQLite, MariaDB, Redshift, Spark SQL, DuckDB, DB2, Trino, and Standard SQL.

Does this tool validate SQL syntax?

No. This tool formats SQL for readability. It does not execute SQL or validate it against a real database engine.

Can I minify SQL?

Yes. Use Minify SQL to reduce unnecessary whitespace while preserving quoted strings, comments, and semicolons.

Why does my formatted SQL look different from my database IDE?

Different SQL formatters and database tools use different indentation, line-breaking, and dialect rules.

Can I format multiple SQL statements?

Yes. Multiple statements separated by semicolons can be formatted together, with one or two lines between queries.

Is SQL formatting safe?

Formatting runs locally, but you should still avoid pasting passwords, private keys, customer data, or production secrets unnecessarily.