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Minify Join the chat at https://gitter.im/tdewolff/minify

Download binaries for Windows, Linux and macOS

Minify is a CLI implementation of the minify library package.

Installation

Make sure you have Go and Git installed.

Run the following command

mkdir $HOME/src
cd $HOME/src
git clone https://github.com/tdewolff/minify.git
cd minify
make install

and the minify command will be in $GOPATH/bin or $HOME/go/bin.

If you do not have make, instead run the following lines to install minify and enable bash tab completion:

go install ./cmd/minify
source minify_bash_tab_completion

Arch Linux

Using yay:

yay -Syu minify

Minify in AUR

FreeBSD

pkg install minify

MacOS

Using Homebrew:

brew install tdewolff/tap/minify

Brew tap

Ubuntu

Update the package index:

sudo apt-get update

Install minify deb package:

sudo apt-get install minify

Usage

Usage: minify [options] [input]

Options:
  -a, --all                              Minify all files, including hidden files and files in hidden directories
  -b, --bundle                           Bundle files by concatenation into a single file
      --cpuprofile string                Export CPU profile
      --css-precision int                Number of significant digits to preserve in numbers, 0 is all (default 0)
  -h, --help                             Show usage
      --html-keep-comments               Preserve all comments
      --html-keep-conditional-comments   Preserve all IE conditional comments
      --html-keep-default-attrvals       Preserve default attribute values
      --html-keep-document-tags          Preserve html, head and body tags
      --html-keep-end-tags               Preserve all end tags
      --html-keep-quotes                 Preserve quotes around attribute values
      --html-keep-whitespace             Preserve whitespace characters but still collapse multiple into one
      --js-precision int                 Number of significant digits to preserve in numbers, 0 is all (default 0)
      --js-keep-var-names                Preserve original variable names
      --json-precision int               Number of significant digits to preserve in numbers, 0 is all (default 0)
  -l, --list                             List all accepted filetypes
      --match string                     Filename pattern matching using regular expressions
      --memprofile string                Export memory profile
      --mime string                      Mimetype (eg. text/css), optional for input filenames, has precedence over --type
  -o, --output string                    Output file or directory (must have trailing slash), leave blank to use stdout
  -p, --preserve[=mode,ownership,timestamp]   Preserve options (mode, ownership, timestamps, links)
  --preserve-links                   Copy symbolic links without dereferencing and without minifying the referenced file (only with --sync)
  -r, --recursive                        Recursively minify directories
      --svg-precision int                Number of significant digits to preserve in numbers, 0 is all (default 0)
  -s, --sync                             Copy all files to destination directory and minify when filetype matches
      --type string                      Filetype (eg. css), optional for input filenames
      --url string                       URL of file to enable URL minification
  -v, --verbose                          Verbose
      --version                          Version
  -w, --watch                            Watch files and minify upon changes
      --xml-keep-whitespace              Preserve whitespace characters but still collapse multiple into one

Input:
  Files or directories, leave blank to use stdin

Types

css     text/css
htm     text/html
html    text/html
js      application/javascript
json    application/json
svg     image/svg+xml
xml     text/xml

Examples

Minify index.html to index-min.html:

$ minify -o index-min.html index.html

Minify index.html to standard output (leave -o blank):

$ minify index.html

Normally the mimetype is inferred from the extension, to set the mimetype explicitly:

$ minify --type=html -o index-min.tpl index.tpl

You need to set the type or the mimetype option when using standard input:

$ minify --mime=application/javascript < script.js > script-min.js

$ cat script.js | minify --type=js > script-min.js

Directories

You can also give directories as input, and these directories can be minified recursively.

Minify files in the current working directory to out/ (no subdirectories):

$ minify -o out/ *

Minify files recursively in src/:

$ minify -r -o out/ src

Minify only javascript files in src/:

$ minify -r -o out/ --match=\.js src

Concatenate

When multiple inputs are given and the output is either standard output or a single file, it will concatenate the files together if you use the bundle option.

Concatenate one.css and two.css into style.css:

$ minify -b -o style.css one.css two.css

Concatenate all files in styles/ into style.css:

$ minify -r -b -o style.css styles

You can also use cat as standard input to concatenate files and use gzip for example:

$ cat one.css two.css three.css | minify --type=css | gzip -9 -c > style.css.gz

Watching

To watch file changes and automatically re-minify you can use the -w or --watch option.

Minify style.css to itself and watch changes:

$ minify -w -o style.css style.css

Minify and concatenate one.css and two.css to style.css and watch changes:

$ minify -w -o style.css one.css two.css

Minify files in src/ and subdirectories to out/ and watch changes:

$ minify -w -r -o out/ src
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