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Package image-optimizer
Short Description Easily optimize images using PHP
License MIT
Homepage https://github.com/simexis/image-optimizer
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Informations about the package image-optimizer
Easily optimize images using PHP
This package can optimize PNGs, JPGs, SVGs and GIFs by running them through a chain of various image optimization tools. Here's how you can use it:
The image at $pathToImage will be overwritten by an optimized version which should be smaller. The package will automatically detect which optimization binaries are installed on your system and use them.
Here are some example conversions that have been done by this package.
Loving Laravel? Then head over to the Laravel specific integration.
Using WordPress? Then try out the WP CLI command.
Installation
You can install the package via composer:
Optimization tools
The package will use these optimizers if they are present on your system:
Here's how to install all the optimizers on Ubuntu:
And here's how to install the binaries on MacOS (using Homebrew):
Which tools will do what?
The package will automatically decide which tools to use on a particular image.
JPGs
JPGs will be made smaller by running them through JpegTran. These options are used:
-optimize.
PNGs
PNGs will be made smaller by running them through two tools. The first one is Pngquant 2, a lossy PNG compressor. We set no extra options, their defaults are used. After that we run the image through a second one: Optipng. These options are used:
-i0: this will result in a non-interlaced, progressive scanned image-o2: this set the optimization level to two (multiple IDAT compression trials)
SVGs
SVGs will be minified by SVGO. SVGO's default configuration will be used, with the omission of the cleanupIDs plugin because that one is known to cause troubles when displaying multiple optimized SVGs on one page.
Please be aware that SVGO can break your svg. You'll find more info on that in this excellent blogpost by Sara Soueidan.
GIFs
GIFs will be optimized by Gifsicle. These options will be used:
-O3: this sets the optimization level to Gifsicle's maximum, which produces the slowest but best results
Usage
This is the default way to use the package:
The image at $pathToImage will be overwritten by an optimized version which should be smaller.
The package will automatically detect which optimization binaries are installed on your system and use them.
To keep the original image, you can pass through a second argumentoptimize:
In that example the package won't touch $pathToImage and write an optimized version to $pathToOutput.
Setting a timeout
You can set the maximum of time in seconds that each indivual optimizer in a chain can use by calling setTimeout:
In this example each optimizer in the chain will get a maximum 10 seconds to do it's job.
Creating your own optimization chains
If you want to customize the chain of optimizers you can do so by adding Optimizers manually to a OptimizerChain.
Here's an example where we only want optipng and jpegtran to be used:
Notice that you can pass the options an Optimizer should use to it's constructor.
Writing a custom optimizers
Want to use another command line utility to optimize your images? No problem. Just write your own optimizer. An optimizer is any class that implements the Simexis\ImageOptimizer\Optimizers\Optimizer interface:
If you want to view an example implementation take a look at the existing optimizers shipped with this package.
You can easily add your optimizer by using the addOptimizer method on an OptimizerChain.
Example conversions
Here are some real life example conversions done by this package.
png
Original: Photoshop 'Save for web' | PNG-24 with transparency
40 Kb
Optimized
16 Kb (40%)
jpg
Original: Photoshop 'Save for web' | quality 60, optimized
547 Kb
Optimized
525 Kb (95%)
credits: Jeff Sheldon, via Unsplash
svg
Original: Illustrator | Web optimized SVG export
26 Kb
Optimized
20 Kb (76%)
Changelog
Please see CHANGELOG for more information what has changed recently.
Testing
Contributing
Please see CONTRIBUTING for details.
Security
If you discover any security related issues, please email [email protected] instead of using the issue tracker.
Postcardware
You're free to use this package (it's MIT-licensed), but if it makes it to your production environment we highly appreciate you sending us a postcard from your hometown, mentioning which of our package(s) you are using.
Our address is: Simexis, Samberstraat 69D, 2060 Antwerp, Belgium.
We publish all received postcards on our company website.
Credits
- Freek Van der Herten
- All Contributors
This package has been inspired by psliwa/image-optimizer
Emotional support provided by Joke Forment
Support us
Simexis is a webdesign agency based in Antwerp, Belgium. You'll find an overview of all our open source projects on our website.
Does your business depend on our contributions? Reach out and support us on Patreon. All pledges will be dedicated to allocating workforce on maintenance and new awesome stuff.
License
The MIT License (MIT). Please see License File for more information.
