js-beautify
TLDR
Beautify JavaScript file
$ js-beautify [file.js]
Beautify and save in place$ js-beautify -r [file.js]
Beautify HTML$ html-beautify [file.html]
Beautify CSS$ css-beautify [file.css]
Set indentation$ js-beautify -s [4] [file.js]
Use tabs$ js-beautify -t [file.js]
Output to file$ js-beautify [input.js] -o [output.js]
SYNOPSIS
js-beautify [options] [file...]
DESCRIPTION
js-beautify formats JavaScript, HTML, and CSS files with consistent indentation and style. It's useful for cleaning up minified code or enforcing consistent formatting.
The tool provides separate commands for each language (js-beautify, html-beautify, css-beautify) or auto-detects based on extension.
PARAMETERS
-r, --replace
Replace file in place.-o file
Output to file.-s size
Indent size (default 4).-t, --indent-with-tabs
Use tabs.-e, --eol chars
End of line character.-n, --end-with-newline
End with newline.--type type
Force type: js, html, css.-f file
Input file.--config file
Configuration file.
CONFIGURATION
$ // .jsbeautifyrc
{
"indent_size": 2,
"indent_with_tabs": false,
"end_with_newline": true,
"brace_style": "collapse"
}
{
"indent_size": 2,
"indent_with_tabs": false,
"end_with_newline": true,
"brace_style": "collapse"
}
CAVEATS
May alter code semantics in edge cases. Large files may be slow. Doesn't validate code. Configuration precedence can be complex.
HISTORY
js-beautify was created by Einar Lielmanis as an online tool, later expanded to a command-line tool and library. It's widely used for code formatting and reversing minification.
