Photon Experiments - Image Quality

photon-experiments.php

<?php
/**
 * Plugin Name: Photon Experiments
 * Description: Experimenting with Photon parameters.
 * Version: 0.1.0
 */

if ( class_exists( 'Jetpack' ) && Jetpack::is_module_active( 'photon' ) ) :

	function photon_experiments() {
		add_filter( 'jetpack_photon_post_image_args', 'photon_experiments_quality', 100, 2 );
	}
	add_action( 'plugins_loaded', 'photon_experiments', 20 );

	/*
	 * Change Photon image quality to 80%.
	 *
	 * @link https://developer.wordpress.com/docs/photon/api/#quality
	 */
	function photon_experiments_quality( $args, $image ) {
		$args['quality'] = 80;
		return $args;
	}

endif;