Beautifying JavaScript re-indents statements and blocks with consistent spacing, making minified or machine-generated code easy to read and debug.
Minifying does the opposite — it removes whitespace and comments, shortens variable names and applies safe compression passes, producing the smallest possible payload for production use.
Both run entirely in your browser using open-source libraries (js-beautify and terser) — nothing is sent to a server.
What's the difference between Beautify and Minify?
Beautify re-indents statements and blocks for readability during development; Minify removes whitespace and comments, shortens variable names, and applies safe compression, producing the smallest payload for production.
Is minification safe for production code?
The minifier used (terser) is the same tool widely used by production build pipelines (e.g. behind many bundlers), but always test minified output before deploying, since some dynamic patterns (like relying on function.name) can be affected.
Is my JavaScript sent to a server?
No — both modes run entirely in your browser using open-source libraries.