SQL Minifier
Compress SQL to a single line — strips comments and whitespace
SQL Input
Minified
→ chars · % smaller
SQL Minifier — Complete Guide & Instructions
MakeCard SQL Minifier compresses a formatted SQL query down to a single compact line — removing -- and /* */ comments, collapsing runs of whitespace, and tightening spaces around parentheses, commas, semicolons, and operators. The output updates live as you type, with a running character count showing exactly how much smaller the result is. Handy for embedding queries in code, logs, and single-line configs.
How to Use SQL Minifier
- 1 Paste a formatted SQL query into the SQL Input box (or press "Sample" for a demo).
- 2 The Minified panel updates instantly as you type or paste.
- 3 Check the line beneath the output for original vs minified character counts and the % saved.
- 4 Click "Copy" to place the one-line query on your clipboard.
Key Features & Capabilities
- Strips both -- line comments and /* */ block comments.
- Collapses all whitespace runs into single spaces.
- Removes padding around ( ) , ; = < > for maximum compactness.
- Live output — no format button required.
- Character counter shows input size, output size, and percent saved.
- Sample button loads a commented multi-line query to demo.
Supported Formats & Specifications
| Parameter | Specification |
|---|---|
| Comment Styles Removed | -- line comments and /* ... */ block comments |
| Whitespace | All runs collapsed; spaces stripped around (),;=<> |
| Output | Single-line minified query, updates live |
| Stats | Input chars, output chars, % smaller |
| Processing | Fully client-side, regex-based minification |
Practical Everyday Use Cases
- Embedding a query as a single-line string in application code.
- Compressing SQL for logging or URL parameters where newlines break parsing.
- Stripping comments before handing a query to an automated job.
- Reducing query text for compact config files.
- Cleaning copy-pasted queries that carry IDE indentation.
Pro Tips for Best Results
- Verify the minified query still parses — exotic comment syntax inside strings can confuse any minifier.
- Keep the formatted original in version control; use the minified copy only for transport.
- Pair with the SQL Formatter — minify for shipping, reformat for reading.
- Watch string literals containing -- sequences; remove them before minifying.
Common Problems & Solutions
A string literal containing -- or /* may have been cut — quote such strings differently or remove them first.
The input was already compact, or it is mostly a long string — whitespace and comments are what shrink.
That is the point of minification — copy the original elsewhere first if you need the comments later.
Privacy & Security
100% Client-Side Execution
Minification is pure in-browser text processing — your SQL never leaves the page.
Frequently Asked Questions
Everything you need to know about using SQL Minifier
Paste the query into this tool — it instantly strips comments and extra whitespace and shows a compact one-line version with the percentage of size saved.
No — removing comments and whitespace does not alter the query semantics; it executes identically on the database.
Single-line queries embed cleanly in code strings, log entries, environment variables, and tools that cannot handle multi-line input.
Yes — the minifier runs locally in your browser; the query text is never transmitted to any server.
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100% free, browser-based, and private. No installation, registration, or file upload to external servers required.
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