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https://github.com/JamieMason/ImageOptim-CLI

Make optimisation of images part of your automated build process
https://github.com/JamieMason/ImageOptim-CLI

advpng compress gifsicle image-optimisation imagealpha imageoptim jpegmini jpegoptim jpegtran optimize optipng performance pngcrush pngout pngquant site-speed webperf

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Make optimisation of images part of your automated build process

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README 

        
# ImageOptim-CLI



> Automates [ImageOptim](http://imageoptim.com), [ImageAlpha](http://pngmini.com), and [JPEGmini for Mac](http://jpegmini.com/mac) to make batch optimisation of images part of your automated build process.



[![NPM version](http://img.shields.io/npm/v/imageoptim-cli.svg?style=flat-square)](https://www.npmjs.com/package/imageoptim-cli)

[![NPM downloads](http://img.shields.io/npm/dm/imageoptim-cli.svg?style=flat-square)](https://www.npmjs.com/package/imageoptim-cli)

[![Build Status](https://img.shields.io/github/workflow/status/JamieMason/imageoptim-cli/ci)](https://github.com/JamieMason/ImageOptim-CLI/actions)

[![Maintainability](https://api.codeclimate.com/v1/badges/c7f41a90fa2c975cfd03/maintainability)](https://codeclimate.com/github/JamieMason/ImageOptim-CLI/maintainability)



## Table of Contents



-   [📣 Summary](#-summary)

-   [🌩 Installation](#-installation)

-   [🕹 Usage](#-usage)

-   [⚠️ JPEGmini and support for assistive devices](#️-jpegmini-and-support-for-assistive-devices)

-   [💡 Related Projects](#-related-projects)

-   [❓ FAQs](#-faqs)

-   [⚙️ Contributing](#️-contributing)

-   [🙋🏿‍♀️ Getting Help](#♀️-getting-help)

-   [👀 Other Projects](#-other-projects)

-   [🤓 Author](#-author)



## 📣 Summary



While other image optimization tools are available from the command line, ImageOptim-CLI exists because the [current benchmarks](http://jamiemason.github.io/ImageOptim-CLI/) suggest that ImageOptim, ImageAlpha and JPEGmini currently outperform those alternatives over lossless and lossy optimizations.



ImageOptim-CLI is written in TypeScript and AppleScript but is distributed as a self-contained executable binary, you don't need Node.js installed to use ImageOptim-CLI.



Check out this short [video demo of ImageOptim-CLI](https://www.youtube.com/watch?v=HGBounRIzSs) to see how it works.



## 🌩 Installation



### [npm](https://npmjs.org/)



    npm install -g imageoptim-cli



### [homebrew](https://brew.sh/)



    brew update

    brew install imageoptim-cli



### Manual



Otherwise, you can install manually by downloading the latest release then adding ImageOptim-CLI to your [\\\\$PATH](https://en.wikipedia.org/wiki/PATH_(variable)).



    # go to home directory

    cd ~

    # download the tarball (change 3.0.7 to latest version if available)

    curl --output imageoptim-cli.tgz https://registry.npmjs.org/imageoptim-cli/-/imageoptim-cli-3.0.7.tgz

    # extract the tarball

    tar -xvzf ./imageoptim-cli.tgz

    # delete the tarball

    rm imageoptim-cli.tgz

    # rename the directory extracted from the tarball

    mv ./package ./imageoptim-cli

    # make imageoptim command available in your terminal

    export PATH=$PATH:imageoptim-cli/dist



> Saving somewhere in your home directory such as `~/imageoptim-cli` is recommended, but not essential. Saving to `/Applications` is **not** recommended, do not do this.



## 🕹 Usage



    $ imageoptim --help



      Usage: imageoptim [options] [patterns...]



      Options:



        -V, --version           output the version number

        -a, --imagealpha        enable ImageAlpha

        -j, --jpegmini          enable JPEGmini

        -C, --no-color          output to the terminal without colors

        -I, --no-imageoptim     disable ImageOptim

        -Q, --no-quit           do not quit apps once finished

        -S, --no-stats          do not display file size savings and quality loss information

        --number-of-colors   ImageAlpha palette size, defaults to 256

        --quality -   ImageAlpha quality range from 0-100, defaults to 65-80

        --speed              ImageAlpha speed from 1 (brute-force) to 10 (fastest), defaults to 1

        -h, --help              output usage information



      Supported Apps:



        ImageAlpha: https://pngmini.com

        ImageOptim: https://imageoptim.com

        JPEGmini Lite: https://itunes.apple.com/us/app/jpegmini-lite/id525742250

        JPEGmini Pro: https://itunes.apple.com/us/app/jpegmini-pro/id887163276

        JPEGmini: https://itunes.apple.com/us/app/jpegmini/id498944723



      Examples:



        Run ImageOptim.app over every image in current directory

        imageoptim



        Run ImageAlpha.app and ImageOptim.app over every PNG in current directory

        imageoptim --imagealpha '**/*.png'



        Run JPEGmini.app and ImageOptim.app over every JPG in current directory

        imageoptim --jpegmini '**/*.jpg' '**/*.jpeg'



        Run ImageOptim.app over every image in a specific directory

        imageoptim '~/Desktop'



## ⚠️ JPEGmini and support for assistive devices



You may be presented with the following message the first time you run ImageOptim-CLI with the `--jpegmini` flag.



> To automate JPEGmini we need to add Terminal.app (or iTerm.app etc) to the 'support for assistive devices' whitelist.



The JPEGmini OS X Apps don't include a command line API, so a real user is simulated by entering synthetic clicks and keyboard commands instead. This requires your permission and is easily set up in System Preferences as shown by these guides.



-   [Enable access for assistive devices in OS X](http://mizage.com/help/accessibility.html)

-   [OS X Mavericks: Enable access for assistive devices and applications](http://support.apple.com/en-us/HT6026)



## 💡 Related Projects



### Grunt Plugin



The ImageOptim-CLI [Grunt](http://gruntjs.com) plugin is [grunt-imageoptim](https://github.com/JamieMason/grunt-imageoptim).



### Comparison of image optimization tools



ImageOptim-CLI features in this comparison of the [performance of image optimisation tools](http://jamiemason.github.io/ImageOptim-CLI/) alongside Kraken.io, CodeKit, grunt-contrib-imagemin, Smush.it, and TinyPNG.



### Article for Smashing Magazine



[How Optimized Are Your Images? Meet ImageOptim-CLI, a Batch Compression Tool](http://www.smashingmagazine.com/2013/12/17/imageoptim-cli-batch-compression-tool/)



### Alfred Workflow



The ImageOptim-CLI Workflow for Alfred app is [alfred-image-optim-workflow](https://github.com/ramiroaraujo/alfred-image-optim-workflow)



## ❓ FAQs



### General



#### Do ImageOptim, ImageAlpha, or JPEGmini come bundled with the ImageOptim-CLI installation?



You will need to install these applications separately.



#### Do I have to pay to use ImageOptim-CLI?



The CLI, ImageOptim and ImageAlpha are all free. JPEGmini is a paid-for product but you can use ImageOptim-CLI and choose not to run JPEGmini.



#### The WebP image format looks promising, can you get ImageOptim-CLI to convert images to it?



WebP looks great and may well overtake the formats handled by ImageOptim-CLI, but converting images to WebP is outside ImageOptim-CLI's chosen remit.



#### Can you get ImageOptim-CLI to skip images it has already processed, if they haven't changed?



JPEGmini does this today, but for ImageOptim and ImageAlpha I feel a feature like this belongs in those applications rather than this automator.



### ImageOptim



#### ImageOptim makes the fans on my Mac run at full power.



Optimising images is a pretty intensive process, so instead of optimising one image at a time (which would take forever) — ImageOptim optimises many images at the same time until all of them are done.



A side effect of this is that the fans come on at full power to keep your machine cool while it's maxed out.



### ImageAlpha



#### I don't think ImageAlpha is running, I can't see anything.



ImageOptim-CLI uses ImageAlpha's internal installation of [pngquant](http://pngquant.org) so it's normal that nothing is shown on screen.



It's also possible that if you look in the [Activity Monitor](http://support.apple.com/kb/HT5890) you will not see `pngquant` displayed but it _is_ being run. In my experience it's only when you run ImageOptim-CLI on a very large number of PNGs that you have enough time to spot it. ensure that Activity Monitor's **Update Frequency** is set to **Very Often (1 sec)**.



### JPEGmini



#### Can I use ImageOptim-CLI with JPEGmini Lite, the free version of JPEGmini?



Yes.



#### I upgraded from JPEGmini Lite to JPEGmini but ImageOptim-CLI still says JPEGmini is not installed.



Performing the in-app upgrade leaves the app named as jpegmini-lite, so ImageOptim-CLI can't determine whether it's the free or full version. It is better to instead buy [the full version of JPEGmini](https://itunes.apple.com/us/app/jpegmini/id498944723) separately.



#### ImageOptim-CLI says “To automate JPEGmini we need to enable GUI Scripting”, how do I do that?



See this tutorial on [how to manage Accessibility preferences and GUI Scripting](http://www.macosautomation.com/mavericks/guiscripting/index.html). In the case of OS X Mavericks, you will want to add the Applications JPEGmini and Terminal (or equivalent such as iTerm).



### Windows and Linux



#### Can I use ImageOptim-CLI on Windows or Linux?



ImageOptim-CLI is responsible for automating 3 OS X applications so is inherently bound to OS X for that reason.



#### Are there any plans for ImageOptim-CLI to support Windows or Linux?



It would first require ImageOptim, ImageAlpha, and JPEGmini to be available for those platforms.



#### I don't have OS X, can you recommend an alternative to ImageOptim-CLI?



[@addyosmani](https://github.com/addyosmani) wrote a really thorough article on [tools for image optimization](http://addyosmani.com/blog/image-optimization-tools/) which discusses a wide range of options in great detail.



## ⚙️ Contributing



Have an idea? Found a bug? Please see the [Contributing Guide](/CONTRIBUTING.md) for information on how to install the project and start writing code.



## 🙋🏿‍♀️ Getting Help



Get help with issues by creating a [Bug Report] or discuss ideas by opening a [Feature Request].



[bug report]: https://github.com/JamieMason/ImageOptim-CLI/issues/new?template=bug_report.md



[feature request]: https://github.com/JamieMason/ImageOptim-CLI/issues/new?template=feature_request.md



## 👀 Other Projects



If you find my Open Source projects useful, please share them ❤️



-   [**eslint-formatter-git-log**](https://github.com/JamieMason/eslint-formatter-git-log)
ESLint Formatter featuring Git Author, Date, and Hash

-   [**eslint-plugin-move-files**](https://github.com/JamieMason/eslint-plugin-move-files)
Move and rename files while keeping imports up to date

-   [**eslint-plugin-prefer-arrow-functions**](https://github.com/JamieMason/eslint-plugin-prefer-arrow-functions)
Convert functions to arrow functions

-   [**Jasmine-Matchers**](https://github.com/JamieMason/Jasmine-Matchers)
Write Beautiful Specs with Custom Matchers

-   [**karma-benchmark**](https://github.com/JamieMason/karma-benchmark)
Run Benchmark.js over multiple Browsers, with CI compatible output

-   [**self-help**](https://github.com/JamieMason/self-help#readme)
Interactive Q&A Guides for Web and the Command Line

-   [**syncpack**](https://github.com/JamieMason/syncpack#readme)
Manage multiple package.json files, such as in Lerna Monorepos and Yarn Workspaces



## 🤓 Author






I'm [Jamie Mason] from [Leeds] in England, I began Web Design and Development in 1999 and have been Contracting and offering Consultancy as Fold Left Ltd since 2012. Who I've worked with includes [Sky Sports], [Sky Bet], [Sky Poker], The [Premier League], [William Hill], [Shell], [Betfair], and Football Clubs including [Leeds United], [Spurs], [West Ham], [Arsenal], and more.






[![Follow JamieMason on GitHub][github badge]][github]      [![Follow fold_left on Twitter][twitter badge]][twitter]






[github badge]: https://img.shields.io/github/followers/JamieMason.svg?style=social&label=Follow



[twitter badge]: https://img.shields.io/twitter/follow/fold_left.svg?style=social&label=Follow



[arsenal]: https://www.arsenal.com



[betfair]: https://www.betfair.com



[github]: https://github.com/JamieMason



[jamie mason]: https://www.linkedin.com/in/jamiemasonleeds



[leeds united]: https://www.leedsunited.com/



[leeds]: https://www.instagram.com/visitleeds



[premier league]: https://www.premierleague.com



[shell]: https://www.shell.com



[sky bet]: https://www.skybet.com



[sky poker]: https://www.skypoker.com



[sky sports]: https://www.skysports.com



[spurs]: https://www.tottenhamhotspur.com



[twitter]: https://twitter.com/fold_left



[west ham]: https://www.whufc.com



[william hill]: https://www.williamhill.com