2026-08-31

Best Free SQL Formatters Compared

A one-line SQL query dumped out of an ORM's debug log or a slow-query log is barely readable. A decent formatter turns it back into something you can actually review.

Quick comparison

Tool Consistent indentation Keyword casing options Runs fully in your browser Free
iLoveDevTools Yes Yes Yes Yes
Typical online SQL beautifiers Yes Varies No (server round-trip) Mostly, with ads

iLoveDevTools

The SQL Formatter takes a dense or minified query and reflows it into readable, consistently indented SQL — useful for reviewing generated queries, pasting into a PR description, or just making sense of something a teammate sent you in a Slack thread. It runs client-side, so query text (which can contain real table and column names, sometimes real data in WHERE clauses) never leaves your browser.

Generic online SQL beautifiers

Most of the free ones online do the basic reindent-and-uppercase-keywords job adequately, but they route your query through a server to do it, and many are ad-heavy pages built around the tool rather than the tool itself.

Verdict

For most day-to-day query cleanup, iLoveDevTools's SQL Formatter does the job without sending query text — which can include real schema and data — off your machine.

Try SQL Formatter