Developer tools
JavaScript formatter
A practical beautifier for snippets — not a full Prettier port.
Processed in your browser — nothing is uploaded
Tracks braces and strings. Ternaries and ASI edge cases may still look hand-written.
Last reviewed 2026-09-10.
FAQ
Questions, answered
TypeScript?
There is a dedicated TypeScript page using the same engine.
Will it fix bugs?
No. It only changes whitespace (and comments when minifying).
Does my text leave the browser?
No. The JavaScript formatter runs in JavaScript on this page. Your paste is not uploaded.
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