@squirrel-forge/minify-images

Simple imagemin compiler including some useful configuration options. Made to be compatible with node ^10.0.0, might work on higher versions, but currently not supported or tested.

imagemin

npm: imagemin Version: 7.0.1 Note: last version compatible with node ^10.0.0

Installation

npm i @squirrel-forge/minify-images

All imagemin plugins are optional, to allow for a custom setup if required. Install your required plugins and then use the --no-optional flag when installing minify-images. See the plugins section for compatibility and more information.

cli usage

If you installed globally with the -g option.

minify-images target -b --boolean --str=imagemin-webp,imagemin-svgo
minify-images source target -b --boolean --str=imagemin-webp,imagemin-svgo

For local installations use npx to run the minify-images executable.

npx minify-images ...

Arguments

The source argument can be a single file path or folder. The target argument must be a directory and will be created if it does not exist.

Using only one argument

the source argument is omitted and assumed to be the current working directory

1. target - Path to write optimized image files

Using two arguments

1. source - Path from where to read, if a directory, files are fetched with following options: { extensions : /\.(gif|jpg|jpeg|png|svg|webp)/ }
2. target - Path to write optimized image files

Options

A long option always override the value of a short option if both are used.

Short	Long	Type	Description
-x	--use-webp	bool	Convert to webp format, only jpeg/png
-p	--plugins	str, ...	Define which plugins to use
-c	--colors	str, ...	Define verbose listing color kib limits, must be 3 integers > 0
-n	--no-map	bool	Do not use a hashmap, should use this option for single file argument
-f	--squash-map	bool	Ignore existing map, no map will be loaded and any existing map is replaced
-o	--options	'no',str	Load options from this path, unless set to 'no', if not set regular checks apply
-l	--parallel	bool	Process files in parallel, might be a little faster with lots of files
	--defaults	bool	Deploy default config to cwd or target directory
-s	--stats	bool	Show stats output
-i	--verbose	bool	Show additional info
-u	--loose	bool	Run in loose mode, disables the strict option
-v	--version	bool	Show the application version

Config file

Plugin options can be set by a .minify-images json format file containing options objects for each plugin you wish to customize, see following example:

File: .minify-images

{
  "imagemin-mozjpeg": {
    "quality": 80,
    "progressive": false
  }
  ...
}

The config is loaded in following order:

1. If you specified a config path it will be checked first.
2. Your current working directory, from where you are running the command usually.
3. The source root directory, from where the source file or files are loaded.

If none of the above resolve to a valid config, defaults are used.

Map file

The .minify-images.map file is only a json map of paths with file content hashes, see the options -n and -f for more details.

NPM scripts

When installed locally use following scripts.

...
"scripts": {
    "images:publish": "npx minify-images src/img dist/img",
}
...

Api usage

You can require the ImagesCompiler class in your node script and run it, change internal options and extend it easily, look at the cli implementation and code comments to understand what to run in which order, currently there will be no extended documentation on the js api, since code comments should be sufficient to understand what works in which way.

Plugins

Default plugins that are included as optional dependencies, with some additional notes, can be found below:

imagemin-gifsicle

npm: imagemin-gifsicle Version: 7.0.0 Note: upto date version at time of release.

imagemin-mozjpeg

npm: imagemin-mozjpeg Version: 9.0.0 Note: upto date version at time of release.

imagemin-pngquant

npm: imagemin-pngquant Version: 9.0.2 Note: upto date version at time of release.

imagemin-svgo

npm: imagemin-svgo Version: 8.0.0 Note: last version compatible with node ^10.0.0

imagemin-webp

npm: imagemin-webp Version: 6.0.0 Note: upto date version at time of release.

Plugin issues

┌───────────────┬──────────────────────────────────────────────────────────────┐
│ Moderate      │ Regular Expression Denial of Service (ReDOS)                 │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Package       │ semver-regex                                                 │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Patched in    │ >=3.1.3                                                      │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Dependency of │ imagemin-webp                                                │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Path          │ imagemin-webp > cwebp-bin > bin-wrapper > bin-version-check  │
│               │ > bin-version > find-versions > semver-regex                 │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ More info     │ https://nodesecurity.io/advisories/1005009                   │
└───────────────┴──────────────────────────────────────────────────────────────┘

in: imagemin-gifsicle, imagemin-mozjpeg, imagemin-pngquant, imagemin-webp

┌───────────────┬──────────────────────────────────────────────────────────────┐
│ Moderate      │ Inefficient Regular Expression Complexity in nth-check       │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Package       │ nth-check                                                    │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Dependency of │ imagemin-svgo                                                │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Path          │ imagemin-svgo > svgo > css-select > nth-check                │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ More info     │ https://nodesecurity.io/advisories/1004967                   │
└───────────────┴──────────────────────────────────────────────────────────────┘

in: imagemin-svgo

┌───────────────┬──────────────────────────────────────────────────────────────┐
│ High          │ Regular Expression Denial of Service in trim-newlines        │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Package       │ trim-newlines                                                │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Patched in    │ >=3.0.1                                                      │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Dependency of │ imagemin-webp                                                │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ Path          │ imagemin-webp > cwebp-bin > logalot > squeak > lpad-align >  │
│               │ meow > trim-newlines                                         │
├───────────────┼──────────────────────────────────────────────────────────────┤
│ More info     │ https://nodesecurity.io/advisories/1005151                   │
└───────────────┴──────────────────────────────────────────────────────────────┘

in: imagemin-webp