SQL Formatter & Query Cost Plan Visualizer – Offline Beautifier & Explain Analyzer
-- Click 'Format SQL' or paste your query on the left...
Why Format SQL & Inspect Execution Plans Offline?
Database queries often contain proprietary business schema information, proprietary analytics logic, or internal table names. Transmitting unencrypted SQL statements or query plans to third-party cloud servers can violate company security compliance rules (SOC 2, ISO 27001). Our tool formats SQL and analyzes execution plans 100% locally in your browser memory.
Supported SQL Features & Standards
- Standard ANSI SQL Formatting: Beautifies complex subqueries, CTEs (Common Table Expressions
WITH ... AS), window functions, joins, and aggregates with clean indentation. - Custom Keyword Casing: Instantly standardize legacy databases to consistent uppercase or lowercase reserved keywords.
- EXPLAIN Plan Analysis: Inspect PostgreSQL and MySQL JSON query execution plans to identify expensive sequential scans (Seq Scan), hash joins, and bottleneck operations.
Frequently asked questions
Does this formatter execute queries on any database?
No. It is a pure client-side parser and beautifier. It does not connect to or execute queries against any database engine.
Are my proprietary queries logged?
Never. Everything runs in your local JavaScript sandbox with zero server transmission.
Can it handle complex CTEs and subqueries?
Yes! Recursive and multi-level nested queries are parsed and indented according to industry SQL style standards.
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