JavaScript Beautifier

It reformats JavaScript with consistent indentation and spacing so tangled or minified code becomes readable. It can also minify code by removing unnecessary whitespace.

No. Reformatting only adjusts whitespace and layout, so the code behaves exactly the same after beautifying. The logic is untouched.

It can strip unnecessary whitespace to compress the code, though heavy minifiers also rename variables, which a formatter does not do. This tool focuses on readable formatting and basic compaction.

It uses the bundled js-beautify library running in your browser, so formatting is fast and works without a server. Nothing you paste is uploaded.

No. All processing happens client-side in your browser, so your JavaScript never leaves your device. It is safe for private or proprietary code.

It can re-indent minified code to make it readable, but it cannot restore original variable names that a minifier renamed. The structure becomes clear even if names stay short.

Beautifiers apply their own default spacing and brace conventions, which may differ from a specific style guide. You can usually adjust options or run a dedicated linter for exact rules.