README

A responsive image workflow for optimizing and resizing your images. Details can be found in the excellent article at Efficient Image Resizing With ImageMagick

Originally based off (forked) https://github.com/nwtn/php-respimg

Requirements/dependencies

• PHP >= 7.1.0

• ImageMagick

• ext-imagick

• Optional: For optimization, depending on what settings you pass:

  • SVGO
  • image_optim
  • picopt
  • ImageOptim

Installation

Git

git clone https://github.com/jamesjohnmcguire/PhpImageOptimizer

Composer

composer require https://packagist.org/packages/digitalzenworks/php-image-optimizer

Examples

To resize one raster image, without optimization:

$image = new DigitalZenWorks\ImageOptimizer($input_filename);
$image->smartResize($output_width, $output_height, false);
$image->writeImage($output_filename);

To resize one raster image and maintain aspect ratio, without optimization:

$image = new DigitalZenWorks\ImageOptimizer($input_filename);
$image->smartResize($output_width, 0, false);
$image->writeImage($output_filename);

To resize one raster image and maintain aspect ratio, with optimization:

$image = new DigitalZenWorks\ImageOptimizer($input_filename);
$image->smartResize($output_width, 0, true);
$image->writeImage($output_filename);
nwtn\Respimg::optimize($output_filename, 0, 1, 1, 1);

To resize a directory of raster images and maintain aspect ratio, with optimization:

$exts = array('jpeg', 'jpg', 'png');
if ($dir = opendir($input_path)) {
	while (($file = readdir($dir)) !== false) {
		$base = pathinfo($file, PATHINFO_BASENAME);
		$ext = strtolower(pathinfo($file, PATHINFO_EXTENSION));
		if (in_array($ext, $exts)) {
			$image = new DigitalZenWorks\ImageOptimizer($input_path . '/' . $file);
			$image->smartResize($width, 0, true);
			$image->writeImage($output_path . '/' . $base . '-w' . $w . '.' . $ext);
		}
	}
}
DigitalZenWorks\ImageOptimizer::optimize($output_path, 0, 1, 1, 1);

To resize a directory of raster images and SVGs and maintain aspect ratio, with optimization:

$exts = array('jpeg', 'jpg', 'png');
if ($dir = opendir($input_path)) {
	while (($file = readdir($dir)) !== false) {
		$base = pathinfo($file, PATHINFO_BASENAME);
		$ext = strtolower(pathinfo($file, PATHINFO_EXTENSION));
		if (in_array($ext, $exts)) {
			$image = new DigitalZenWorks\ImageOptimizer($input_path . '/' . $file);
			$image->smartResize($width, 0, true);
			$image->writeImage($output_path . '/' . $base . '-w' . $w . '.' . $ext);
		} elseif ($ext === 'svg') {
			copy($input_path . '/' . $file, $output_path . '/' . $file);
			DigitalZenWorks\ImageOptimizer::rasterize($input_path . '/' . $file, $output_path . '/', $width, 0);
		}
	}
}
DigitalZenWorks\ImageOptimizer::optimize($output_path, 3, 1, 1, 1);

Contributing

If you have a suggestion that would make this better, please fork the repo and create a pull request. You can also simply open an issue with the tag "enhancement". Don't forget to give the project a star! Thanks again!

1. Fork the Project
2. Create your Feature Branch (git checkout -b feature/AmazingFeature)
3. Commit your Changes (git commit -m 'Add some AmazingFeature')
4. Push to the Branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

License

Distributed under the MIT License. See LICENSE for more information.

Contact

James John McGuire - @jamesmc - jamesjohnmcguire@gmail.com

Project Link: https://github.com/jamesjohnmcguire/PhpImageOptimizer