minify

README

Minify

Minify is a CLI implemention of the minify library package.

Installation

Make sure you have Go and Git installed.

Run the following command

go get github.com/tdewolff/minify/cmd/minify

and the minify command will be in your $GOPATH/bin.

Usage

Usage: minify [options] [input]

Options:
  -a, --all
        Minify all files, including hidden files and files in hidden directories
  --html-keep-default-attrvals
        Preserve default attribute values
  --html-keep-whitespace
        Preserve whitespace characters but still collapse multiple whitespace into one
  -l, --list
        List all accepted filetypes
  --match string
        Filename pattern matching using regular expressions, see https://github.com/google/re2/wiki/Syntax
  --mime string
        Mimetype (text/css, application/javascript, ...), optional for input filenames, has precendence over -type
  -o, --output string
        Output file or directory, leave blank to use stdout
  -r, --recursive
        Recursively minify directories
  --type string
        Filetype (css, html, js, ...), optional for input filenames
  --url string
        URL of file to enable URL minification
  -v, --verbose
        Verbose
  -w, --watch
        Watch files and minify upon changes
  --xml-keep-whitespace
        Preserve whitespace characters but still collapse multiple whitespace into one

Input:
  Files or directories, leave blank to use stdin

Types

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

Examples

The following commands are variations one can use to minify files:

$ minify file.html # file.html → file.min.html

$ minify --type=css -o file_minified.ext file.ext # file.ext → file_minified.ext

$ minify --mime=text/javascript < file.js > file.min.js

$ cat file.html | minify --type=html > file.min.html

It is also possible to overwrite the input file by the output file. Overwriting existing files needs to happen forcefully. However, overwriting won't work with input/output redirection streams. Using the following command the input file will be loaded into memory first before writing to the output file:

$ minify file.html

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

$ minify . # minify files in current working directory (no subdirectories)

$ minify -r dir # minify files in dir recursively

$ minify -r --match=\.js dir # minify only javascript files in dir

Additionally, you can watch for file changes and automatically re-minify:

$ minify -r --watch dir -o dir-min