SQL Minifier – Compress SQL Queries Online Free

About the SQL Minifier

The SQL Minifier strips comments and unnecessary whitespace from your queries, showing exactly how many bytes and what percentage you saved compared to the original. You can choose to collapse everything into a single line or keep line breaks while still tightening up spacing, and optionally uppercase keywords along the way.

It’s built for developers who need to shrink stored procedures, embed queries in application code, or reduce the size of SQL files before deployment. If you need to go the other direction and make a minified query readable again, the SQL Formatter handles that, and the CSS Minifier is useful for compressing other parts of your project’s codebase the same way.

BigToolSite Team tested this minifier against queries with mixed comment styles, nested parentheses, and multi-line JOIN statements to confirm the size savings are calculated accurately without breaking query syntax.

How to Use the SQL Minifier

• Paste your SQL query into the input field, or click Sample SQL to try it with example data.
• Toggle Strip Comments and Remove Extra Whitespace as needed.
• Enable Keep Line Breaks if you want a lightly compressed, still-readable version instead of a single line.
• Click Minify SQL to see your original size, minified size, and bytes saved.
• Use Copy Output or Download .sql to save the result.

Example Usage

Input:

SELECT id, name
— get active users
FROM users
WHERE status = ‘active’;

Output: SELECT id,name FROM users WHERE status = ‘active’;

With comments and extra whitespace removed, the query above shrinks noticeably while remaining fully valid SQL. If you’re also compressing front-end assets alongside your backend queries, the JS Minifier covers JavaScript files using the same approach.

Frequently Asked Questions