Run the minified code through a formatter, which re-adds line breaks, indentation and brace structure so the logic becomes readable again. Formatting cannot restore original variable names that minification shortened, but it makes the control flow easy to follow. A browser-based JS formatter does this on your own device, so proprietary or internal code is never pasted to a server.
Free JavaScript formatter and beautifier. Expand minified or one-line JS into readable, indented code with proper brace and block structure.
Open JS Formatter / Beautifier → Free toolFree CSS formatter and beautifier. Expand minified CSS into clean, indented rules with one declaration per line so stylesheets are easy to read and edit.
Open CSS Formatter →Minification strips whitespace and usually renames local variables to single letters. A beautifier reverses the first part completely: it expands one-line code into properly indented blocks with clear brace structure. The renamed identifiers stay renamed, since the original names are simply gone, but in practice indented structure is enough to trace what a script does, debug a production issue or inspect a third-party snippet.
The JavaScript people need to unminify is often someone's production bundle or an internal script, not something to paste into an arbitrary website. A client-side formatter parses and reprints the code entirely in your browser, so nothing is transmitted or logged. The same applies to minified stylesheets, which a local CSS formatter expands into one declaration per line.
No. Minification discards the original names, so formatting restores structure and readability but not identifiers.
No. Formatting runs entirely in your browser, so the script never leaves your device.
Yes. A companion CSS formatter expands minified stylesheets into clean, indented rules locally.