What does a SQL minifier do?

A SQL minifier strips whitespace, line breaks, and (optionally) comments from SQL queries — producing compact, single-line output ideal for embedding in source code, config files, log lines, or APIs.

Will minification affect query performance?

No. The database optimiser sees the same logical query regardless of formatting. Performance comes from the query plan, indexes, and data — not whitespace.

When should I minify SQL?

When embedding queries in code string literals (single-line is easier to handle than multi-line), in log entries (single-line fits better), or in API payloads. Never minify SQL you'll be reading or debugging by hand.

Should I strip comments too?

Yes for production code embedded in source — comments add bytes without value when SQL lives inside a string literal. Toggle No comments to remove both -- and /* */ styles. Keep comments for development queries.

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SQL Minifier

Minify

Minify SQL by removing comments and whitespace for compact queries.

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Output

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What Is a SQL Minifier?

A SQL minifier strips whitespace, line breaks, and comments from SQL queries to produce compact, single-line output. Minified SQL is ideal for embedding in source code (string literals), config files, log lines, or APIs — anywhere multi-line SQL would be inconvenient. The minified query executes identically to the original.

SQL Minifier Online — What This Tool Does

This free SQL minifier compresses SQL queries entirely in your browser. Strips whitespace and optional comments, supports all major dialects (MySQL, PostgreSQL, SQLite, T-SQL), and shows exact byte savings. No upload, no signup.

How to Minify SQL Online

Paste your SQL into the Input pane, or click Upload.
Pick your dialect so reserved words minify correctly.
Click Minify — all whitespace, line breaks, and (optionally) comments are stripped.
Toggle No comments to also remove -- and /* */ comments.
The size card shows the byte savings.
Click Copy or Download to save as minified.sql.

When to Minify SQL

Embedding in code — single-line SQL inside a string literal is easier to handle than multi-line strings.
Logging — minified queries fit better in single-line log entries.
API payloads — sending raw SQL over HTTP (rare, but possible) is lighter when minified.
Stored proc deploys — some ORMs produce smaller migrations when SQL is minified.

Tips & Tricks

Keep comments out of production SQL — minifying with No comments removes both -- and /* */ styles.
Always validate before minifying — minified output is harder to debug. Test the original query first.
Beautify before sharing — minified SQL is unreadable in code review. Use SQL Formatter when humans need to read it.

Related Tools

SQL Formatter — opposite operation, pretty-print SQL for humans.
SQL Beautifier — same as formatter, alternate name.
MySQL Formatter — MySQL-specific dialect handling.
PostgreSQL Formatter — PostgreSQL-specific dialect.
JSON to SQL — Generate INSERTs from JSON arrays.

Is My SQL Sent to a Server?

No. SQL minification runs entirely in your browser. Your queries — including any embedded credentials, table names, or business logic — never leave your machine.