SQL Formatter
SQL Formatter is a free online tool for beautifying and compressing SQL statements. It supports five dialects — standard SQL, MySQL, PostgreSQL, MariaDB, and SQLite — with options for uppercase keywords and 2/4/8-space indentation, plus one-click compression to a single line.
Everything runs locally in your browser — your SQL never leaves your machine, and no registration is needed. Useful for backend developers and DBAs formatting long queries, reviewing slow SQL, or turning single-line SQL from logs back into readable form.
How to Use
- Paste or type your SQL statement into the editor
- Select the matching database dialect (MySQL, PostgreSQL, etc.)
- Set the indent size and toggle uppercase keywords if desired
- Click Format to beautify, or Compress to collapse into one line
- Click Copy to copy the result to your clipboard
FAQ
Is this SQL formatter free?
Yes, it is completely free with no registration required and no usage limits.
Is my SQL safe to paste here?
Yes. All formatting and compression happen entirely in your browser — your SQL is never sent to any server, so statements containing schemas or business logic stay private.
Which SQL dialects are supported?
Standard SQL, MySQL, PostgreSQL, MariaDB, and SQLite. Selecting the right dialect ensures database-specific syntax is formatted correctly.
Does compressing change what the SQL does?
No. Compression only strips comments and extra whitespace and joins the statement into one line. Keywords, table names, and conditions are unchanged, so it executes identically.