Paste your SQL query — comments and whitespace will be stripped
Minified SQL appears here
Paste SQL on the left and click Minify// compress sql — strip comments and whitespace instantly
Minify SQL queries by removing whitespace, comments, and redundant spaces. Compact SQL for storage, logging, and transport — free and browser-based.
Minified SQL appears here
Paste SQL on the left and click MinifyDrop any raw SQL query into the left panel — SELECT, INSERT, UPDATE, CREATE TABLE, stored procedures, anything.
Toggle comment removal and whitespace collapsing. Both are on by default for maximum compression.
Click Minify and grab the compact output. Stats show how many characters you saved.
SQL Query Minifier removes all non-essential characters from SQL statements — single-line comments (--), block comments (/* */), MySQL hash comments (#), extra spaces, tabs, and line breaks — while safely preserving string literals and quoted identifiers so your query logic stays intact.
No — the minifier preserves all SQL keywords, operators, string literals, and quoted identifiers. It only removes whitespace and comments, which are ignored by database engines anyway. The resulting query is semantically identical to the original.
Yes. The minifier tokenizes string literals (single-quoted 'value', double-quoted "identifier", and backtick-quoted `table`) before processing, so spaces and comment-like sequences inside strings are never altered.
All major dialects work: MySQL, PostgreSQL, SQLite, SQL Server (T-SQL), Oracle, MariaDB, and standard ANSI SQL. The tool handles -- and /* */ comments universally, plus MySQL-specific # hash comments.
Common use cases include storing compact SQL in configuration files or environment variables, reducing payload size when sending queries over an API, stripping developer notes before production migrations, and cleaning up verbose auto-generated ORM queries for logging.
No. All processing happens entirely in your browser using JavaScript. Your SQL is never transmitted to any server, making this tool safe for sensitive schemas or proprietary queries.
Yes. The minifier works on any SQL text — SELECT queries, INSERT/UPDATE/DELETE, CREATE TABLE, ALTER TABLE, stored procedures, triggers, and views. The logic is comment and whitespace removal, independent of the SQL statement type.
A SQL Query Minifier is a tool that strips all non-essential characters from a SQL statement without changing its meaning or behavior. This includes removing single-line comments (--), block comments (/* ... */), MySQL hash-style comments (#), and collapsing all whitespace — tabs, multiple spaces, and newlines — into single spaces. The result is a compact, single-line SQL string that is functionally identical to the original but significantly shorter.
Database engines ignore whitespace and comments entirely during query parsing, so the minified output executes identically. The gain is purely in character count, which matters when SQL is embedded in application code, stored in config files, passed as URL parameters, logged to structured systems, or transmitted as part of an API payload.
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The minification process requires careful tokenization rather than simple string replacement. A naïve approach — like stripping everything that matches --.* with a regex — will corrupt queries that contain strings like 'It--s a value' or 'url -- https://example.com'. A proper minifier reads the SQL character by character, tracking whether it is inside a string literal or identifier before deciding whether to remove characters.
Here is the processing order used by this tool:
'...') are passed through untouched, including any whitespace or comment-like content inside them."..." and `...`) are similarly preserved verbatim./* ... */) are removed and replaced with a single space to prevent tokens from merging.-- ... and #) are removed up to the next newline.There are several practical situations where compact SQL is preferable to the formatted, human-readable version:
.env files or JSON configs is error-prone. A single-line query is easier to escape and embed.SQL supports multiple comment syntaxes, and different database systems support different subsets:
-- comment: The ANSI standard single-line comment. Supported by all major databases including PostgreSQL, MySQL, SQL Server, SQLite, and Oracle. Everything from -- to the end of the line is ignored./* comment */: The ANSI standard block comment. Can span multiple lines. Useful for commenting out large sections of SQL during development or for adding documentation headers to stored procedures.# comment: A MySQL and MariaDB extension. Behaves exactly like -- but uses a hash character instead. Not supported in PostgreSQL or SQL Server.This minifier handles all three forms, making it compatible with MySQL, MariaDB, PostgreSQL, SQL Server, SQLite, Oracle, and any other database that follows ANSI SQL comment conventions.
SQL Formatting and SQL Minification are opposite operations. A formatter (also called a beautifier) takes compact or messy SQL and restructures it with consistent indentation, capitalized keywords, and logical line breaks to make it easier for humans to read. A minifier does the reverse — it removes all decorative structure to produce the shortest possible valid SQL string.
Both have their place in a developer's workflow. During development and code review, formatted SQL is essential for readability and catching logical errors. In production environments, logging systems, and data pipelines, minified SQL is often preferable because it takes less space, parses faster in log processors, and fits neatly into single-value fields.
Use the SQL Formatter when you need to read or review SQL, and this minifier when you need to store, transmit, or log it compactly.
A few practical guidelines when using minified SQL in your projects: