Beautify HTML (including Handlebars), CSS (including Sass and LESS), JavaScript, and much more in Atom.

Atom Package: https://atom.io/packages/atom-beautify

apm install atom-beautify

Or Settings/Preferences ➔ Packages ➔ Search for atom-beautify

• JavaScript and JSON
• HTML, including
  • Handlebars
  • Mustache
  • Embedded Ruby (ERB)
    • Requires htmlbeautifier
  • XML
  • Marko
    • Requires language-marko
• CSS, including
  • Sass
  • LESS
• SQL
  • Requires python-sqlparse
• Markdown
• Perl
  • Requires perltidy
• PHP
  • Requires php-cs-fixer to be already installed.
• Python
  • Requires autopep8 to be already installed.
  • Beautifies to PEP 8.
• Ruby
  • Requires Ruby Beautify
• CoffeeScript
• Golang
• Java
  • Requires Uncrustify
• C
  • Requires Uncrustify
• C++
  • Requires Uncrustify
• C#
  • Requires Uncrustify
• Objective-C
  • Requires Uncrustify
• D
  • Requires Uncrustify
• Pawn
  • Requires Uncrustify
• Vala
  • Requires Uncrustify
• TypeScript

Open the Command Palette, and type Beautify.

It will only beautify selected text, if a selection is found - if not, the whole file will be beautified.

You can also type ctrl-alt-b as a shortcut or click Packages > Beautify in the menu.

See Keymaps In-Depth for more details.

For example:

'.editor':
  'ctrl-alt-b': 'atom-beautify:beautify-editor'

Each language and all of their respective beautifier's options are fully documented in Atom Beautify Package Settings Panel. There are much too many to document them all here. Here are a few key options that you may use:

• beautifyOnSave (Default false) You can also choose to beautify on every file save.

• beautifyEntireFileOnSave (Default true) Beautification will normally only beautify your selected text. However, when beautification occurs on save then it will be forced to beautify the entire file's contents, not just selected text.

• muteUnsupportedLanguageErrors (Default false) Mute only unsupported language errors.

• muteAllErrors (Default false) Do not show the Atom Beautify Error Messages panel for any of the errors occurring while beautifying.

• analytics (Default true) There is Segment.io, which forwards the data to Google Analytics, to track what languages are being used the most and other stats. Everything is anonymized and no personal information, such as source code, is sent. See Glavin001#47 for more details.

Edit your .jsbeautifyrc file in any of the following locations:

• Atom Package Settings
  Atom ➔ Preferences ➔ Search for atom-beautify
• Same directory as current file
• Project root
  atom-beautify will recursively look up from the current file's directory to find .jsbeautifyrc.
• Your User's Home directory

Note: Comments are supported in .jsbeautifyrc thanks to strip-json-comments.

See examples of both way inside examples/

Option table is available at the js-beautify repo.

See examples/simple-jsbeautifyrc/.jsbeautifyrc.

{
  "indent_size": 2,
  "indent_char": " ",
  "other": " ",
  "indent_level": 0,
  "indent_with_tabs": false,
  "preserve_newlines": true,
  "max_preserve_newlines": 2,
  "jslint_happy": true,
  "indent_handlebars": true
}

See examples/nested-jsbeautifyrc/.jsbeautifyrc.

{
  "html": {
    "brace_style": "collapse",
    "indent_char": " ",
    "indent_scripts": "normal",
    "indent_size": 6,
    "max_preserve_newlines": 1,
    "preserve_newlines": true,
    "unformatted": ["a", "sub", "sup", "b", "i", "u"],
    "wrap_line_length": 0
  },
  "css": {
    "indent_char": " ",
    "indent_size": 4
  },
  "js": {
    "indent_size": 2,
    "indent_char": " ",
    "indent_level": 0,
    "indent_with_tabs": false,
    "preserve_newlines": true,
    "max_preserve_newlines": 2,
    "jslint_happy": true
  },
  "sql": {
    "indent_size": 4,
    "indent_char": " ",
    "indent_level": 0,
    "indent_with_tabs": false
  }
}

See all contributors on GitHub.

Please update the CHANGELOG.md, add yourself as a contributor to the package.json, and submit a Pull Request on GitHub.

MIT © Glavin Wiechert