iiopt

iiopt is a npm package that reduces the sizes of images by compressing them using pngquant and mozjpeg. The compression levels in these tools are fixed to 85.

Install

Iiopt requires Node 8 or later.

iiopt needs imagemagick. In MacOSX, you can install them by using HomeBrew.

brew install imagemagick

Then, install @speee/iiopt using npm:

$ npm install @speee/iiopt

Usage

$ iiopt --help
  (iikanji ni)nice image optimizer

  Usage
    $ iiopt <file>
    $ iiopt <file> --out-dir <output>
    $ iiopt --install-git-hooks
  Option
    --install-git-hooks, install script that hooks git pre-commit to compress image automatically
    --overwrite, -o  overwrite images
    --apply-new-files, compress images before git commit.
    --detect-new-raw-images-from, detecting new raw images in a current working branch.
  Example
    $ iiopt images/sample.jpg --out-dir ./compressed # compressed images, and the results are stored into ./compressed directory
    $ iiopt foo.png -o # overwrite foo.png with compressed image

iiopt --install-git-hooks

iiopt --install-git-hooks command embed the following script into the git pre-commit hook.

#!/bin/sh -e
npx iiopt --apply-new-files

iiopt --apply-new-files is a command that compress png and jpg images stored in the git staging area.

Notice: Currently, also compressed images were recompressed when these were staged. If you want to commit already compressed images, use git commit --no-verify to skip the git pre-commit hook.

Detecting new raw images in a current working branch.

iiopt also has a feature that detects unoptimized images in a current working branch. The feature is run by the following command.

iiopt --detect-new-raw-images-from=${branch}

For ${branch}, you enter the name of the branch to which you want to merge.(ex master, development)

Images

Sample images in this repository are copied from below sites. They are royalty-free.

• http://www.irasutoya.com/
• http://en.freejpg.com.ar/

License

This repository is under the MIT License.