SQL Formatter — Beautify & Minify SQL Queries Online Free
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Paste a messy one-line query and get readable, indented SQL back — or collapse a formatted query down to a single minified line. The formatter understands MySQL back-ticks, SQL Server brackets, and PostgreSQL casts, and everything runs in your browser, so a query with real table and column names never leaves your machine.
How it works
- 1 Paste your SQL Drop a query — or a whole script of several statements separated by semicolons — into the input box.
- 2 Pick your options Choose the dialect (MySQL, PostgreSQL, SQL Server, or standard), how keywords should be cased, and the indent width.
- 3 Format or minify Click Format to lay the query out on multiple indented lines, or Minify to strip comments and collapse it to one line. Copy the result with one click.
Your data stays private
All processing happens entirely in your browser. No files, text, or data are ever sent to our servers. You can disconnect from the internet and this tool will still work.
Frequently asked questions
- Which SQL dialects are supported?
- Standard SQL plus MySQL (back-tick identifiers and # comments), PostgreSQL (:: casts and dollar-quoting), and SQL Server (square-bracket identifiers). The formatter works on token shape rather than a full grammar, so most dialect-specific syntax passes through untouched.
- Is my SQL sent to a server?
- No. Formatting and minifying happen entirely in JavaScript inside your browser. Your query — including any table names, column names, or literal values — never touches a network. The tool keeps working even if you go offline after the page loads.
- Does formatting change what my query does?
- No. Only whitespace, line breaks, and keyword letter-case change. String literals, comments, numbers, and identifiers are preserved exactly. Minifying additionally removes comments, which never affects results.
- Can it handle multiple statements at once?
- Yes. Separate statements with semicolons and each one is formatted independently, with a blank line between them. This works for full migration scripts and seed files too.
- Why does it uppercase my keywords?
- Uppercase keywords are the most common house style and make clauses easy to scan. If you prefer lowercase or want your original casing left alone, switch the Keywords option to lowercase or preserve.
- What happens if my SQL has a syntax error?
- The formatter still does its best and shows a warning — for example, if parentheses are unbalanced or a string quote is left open. It never rejects input outright, so you can format a work-in-progress query and spot the problem visually.