15 dialects · Browser-only · No sign-up

SQL Formatter & Beautifier Online

Turn compressed or inconsistent SQL into a readable query with explicit dialect, indentation, keyword-case, operator, and statement-spacing controls. Your SQL stays in this tab and is never executed.

Format SQL nowFree · Local worker · Up to 50,000 characters
query.sql
SELECT
  customer_id,
  SUM(total) AS revenue
FROM orders
WHERE status = 'paid'
GROUP BY customer_id;

Readable layoutDialect-aware, not executed

Format queries locally

Paste SQL, choose its dialect, and control the layout

The formatting engine runs in an isolated browser worker. It can make a query easier to read and review, but it does not connect to a database or certify that the statement is valid.

Loading the private SQL formatter…

Enable JavaScript to format SQL locally. The dialect guide and examples below remain readable without it.

A deliberate three-step workflow

How to format SQL online

Readable output begins with the dialect that will actually execute the statement.

  1. 1

    Select the database dialect

    Choose Standard SQL, MySQL, PostgreSQL, SQLite, SQL Server, BigQuery, Snowflake, Redshift, Oracle PL/SQL, DuckDB, ClickHouse, Spark, Trino, DB2, or MariaDB. The selection controls token and keyword recognition.

  2. 2

    Choose layout rules

    Set spaces or tabs, keyword case, expression width, logical-operator line breaks, blank lines between statements, compact operators, and semicolon placement.

  3. 3

    Format, diff, and verify

    Copy or download the result, compare it with the original, then use the target database's own parser, tests, and review process. A clean layout is not an execution approval.

Pretty-print without translation

What is a SQL formatter or SQL beautifier?

A SQL formatter—also called a SQL beautifier, query formatter, or SQL pretty printer—rewrites whitespace and the presentation of recognized tokens so a query is easier to scan. It can place major clauses on separate lines, indent nested expressions, normalize recognized keyword case, and separate multiple statements. Formatting should preserve the query's literals, identifiers, comments, parameters, clauses, and logical order.

SQL formatting is not the same as translating between database products. Replacing MySQL LIMIT with SQL Server TOP, changing PostgreSQL operators, or rewriting BigQuery arrays would be a semantic conversion. This tool does not attempt that. It applies the selected dialect's layout rules while leaving the query in that dialect.

It is also not a database parser with a live catalog. A formatter can make an unknown table, misspelled column, incompatible function, dangerous update, or wrong join look polished. Review every meaningful token, especially after formatting generated SQL, template output, or a feature introduced by a recent database release. Stored procedures and custom-delimiter scripts, including MySQL DELIMITER directives, are not supported.

Formatter
Changes whitespace and presentation for readability.
Beautifier
A common name for the same pretty-printing task.
Validator
Checks syntax or deeper rules; this tool does not claim that result.
Executor
Runs a statement against a database; LiveParse never does this.

One family, many grammars

Use a dialect-aware SQL query formatter

Quote characters, literals, operators, row limits, procedural blocks, and vendor clauses are not interchangeable.

MySQL SQL Formatter

Recognize backtick identifiers, MySQL keywords, JSON functions, executable comments, and LIMIT without treating the query as generic text.

PostgreSQL SQL Formatter

Preserve double-quoted identifiers, dollar-quoted strings, casts, JSON operators, filters, window expressions, and PostgreSQL extensions.

BigQuery SQL Formatter

Format GoogleSQL with backtick table paths, arrays, structs, UNNEST, named parameters, window functions, and QUALIFY.

SQL Server Formatter

Lay out T-SQL with bracketed identifiers, variables, TOP, common table expressions, window functions, and offset pagination.

Analytics dialects

Profiles for Snowflake, Redshift, DuckDB, ClickHouse, Spark SQL, and Trino help retain warehouse-specific vocabulary and operators.

Application databases

Standard SQL, SQLite, MariaDB, DB2, and Oracle PL/SQL profiles cover common application and enterprise query formats.

Read the full SQL dialect formatting guide →

Sensitive query text stays local

Private SQL formatting in a browser worker

Queries can reveal table names, business logic, tenant identifiers, security filters, incident details, and product strategy even when they contain no rows. LiveParse sends no query to a formatting API. When you press the format button, a worker created by this page performs the calculation locally and returns only to the page in the same tab.

The input is capped at 50,000 characters, the page warns above 25,000, formatting is stopped after 2 seconds, and excessively large output is discarded. Starting a new run terminates the previous worker so a slow query cannot overwrite a newer result. The page does not place SQL in the URL or browser storage. Copy and download occur only when you choose them.

This boundary does not control your clipboard manager, downloaded files, browser extensions, screen sharing, device backups, or other software. Remove secrets where possible and follow your organization's handling rules. Read the privacy explanation for the site's limited search-referral measurement.

No database connection

LiveParse has no database hostname, credentials, schema catalog, session settings, or permission context. It cannot run SELECT, INSERT, UPDATE, DELETE, DDL, or procedural code.

Return to the formatter →

Readable without pretending there is one style

SQL formatting options explained

Keyword case

Uppercase, lowercase, or preserve recognized SQL keywords. Function names, data types, identifiers, quoted text, and user-defined names retain their spelling to reduce accidental changes.

Indentation

Choose two spaces, four spaces, or tabs. Indentation exposes nested subqueries, joins, common table expressions, lists, and parenthesized conditions.

Expression width

A narrower width expands complex expressions sooner; a wider width keeps small expressions together. It is a readability preference, not a server limit.

Statement spacing

Control blank lines between multiple queries and semicolon placement. Semicolons inside recognized strings and comments remain part of their token.

Formatting is one review stage

What to check after beautifying SQL

ReviewWhy it mattersNext evidence
Literals and parametersQuoted text, JSON paths, regular expressions, and placeholders must remain exact.Compare a token-aware diff with the original.
Comments and hintsA comment may be executable, version-gated, or tied to an optimizer.Check placement against the engine documentation.
Dialect and versionA formatter can lag a newly introduced keyword or procedural form.Parse or prepare with the exact target engine and version.
Meaning and safetyLayout cannot reveal a missing filter, wrong join, privilege issue, or destructive side effect.Review, explain, test, and execute in the appropriate environment.

Questions answered

SQL formatter FAQ

Does this SQL formatter upload my query?

No. Formatting runs in a Web Worker in the current browser tab. LiveParse does not send the SQL to a formatter API or database, put it in the URL, or save it in browser storage.

Is formatted SQL guaranteed to be valid?

No. A formatter changes layout and recognizes tokens for a selected dialect. It does not verify schemas, permissions, data types, engine versions, query plans, returned rows, side effects, or security. Validate with the exact target system.

Which SQL dialect should I choose?

Choose the database product and version that will execute the query. MySQL, PostgreSQL, BigQuery, SQL Server, SQLite, Snowflake, and other systems share core syntax but differ at important edges. Do not infer the dialect only from one quote character or keyword.

Can I format multiple SQL statements?

Yes, for ordinary semicolon-delimited statements. The formatter lets you choose one, two, or three blank lines between them. Stored procedures and custom-delimiter scripts, including MySQL DELIMITER directives, are not supported; use engine- and client-aware tooling for those inputs.

Does changing keyword case rename columns or functions?

The option applies to recognized SQL keywords. Function names, data types, identifiers, strings, and user-defined names are configured to preserve their original spelling. Always review the result because dialect extensions can be newer than a formatter.

Can formatting change how a query performs?

Whitespace and keyword case normally do not change a database plan, but comments, hints, string contents, batch separators, and tokens can matter. The tool aims to preserve them; you still need a diff, the target parser, and query-plan or application tests where performance matters.

What happens with a very large query?

Input is limited to 50,000 characters and a warning appears above 25,000. The formatting worker is stopped after 2 seconds, and output beyond 200,000 characters is discarded. These limits protect page responsiveness; split very large generated scripts at safe statement boundaries.

Can I use this as a SQL minifier or translator?

No. This page focuses on readable formatting. Dense operator spacing is only one presentation control. It does not promise minimum-size output and does not translate statements between database products.