Does this send my SQL to a server?

No. All processing happens entirely in your browser using JavaScript. Your query is never transmitted anywhere.

What comment styles are removed?

Both single-line comments starting with -- and block comments enclosed in /* … */ are removed, including any comments that span multiple lines.

Will this change the logic of my query?

No. Whitespace and comments are never part of SQL semantics. The minified output is functionally identical to the original.

Does it handle string literals that contain -- or /* inside them?

Yes. The parser detects single-quoted, double-quoted, and backtick-quoted strings and skips their contents, so comment-like sequences inside string literals are preserved correctly.

Is the output always a single line?

Yes. After comment removal all whitespace sequences (spaces, tabs, newlines, carriage returns) are collapsed to a single space and the result is trimmed.

SQL Minifier

Name: SQL Minifier
Availability: InStock
Author: Nham Vu

Paste a SQL query to instantly strip comments and excess whitespace, producing a compact single-line output.

Original SQL

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Options

Remove block comments /* … */ Remove single-line comments -- … Collapse whitespace to single space

Minified SQL

0 chars

Copied!

Summary

Paste a SQL query to instantly strip comments and excess whitespace, producing a compact single-line output.

How it works

Paste your SQL query into the input box.
The minifier removes /* block comments */ and -- single-line comments.
All newlines, tabs, and consecutive spaces are collapsed into one space.
The result is trimmed and displayed in the output box.
Click "Copy Minified SQL" to copy it to your clipboard.

Use cases

Embed compact SQL in application config files or environment variables.
Reduce query string length when logging or tracing SQL statements.
Quickly strip development comments before pasting into production scripts.
Compare minified length vs. original to see how much whitespace was added.
Prepare SQL strings for inclusion in source code string literals.
Clean up auto-generated SQL before sharing with teammates.

Frequently Asked Questions

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Last updated: 2026-05-29 · Reviewed by Nham Vu