Untitled Snippet

/**

 * Convert Uploaded Images to WebP Format

 *

 * This snippet converts uploaded images (JPEG, PNG, GIF) to WebP format

 * automatically in WordPress. Ideal for use in a theme's functions.php file,

 * or with plugins like Code Snippets or WPCodeBox.

 * 

 * @package    WordPress_Custom_Functions

 * @autor      Mark Harris

 * @link       www.christchurchwebsolutions.co.uk

 *

 * Usage Instructions:

 * - Add this snippet to your theme's functions.php file, or add it as a new

 *   snippet in Code Snippets or WPCodeBox.

 * - The snippet hooks into WordPress's image upload process and converts

 *   uploaded images to the WebP format.

 *

 * Optional Configuration:

 * - By default, the original image file is deleted after conversion to WebP.

 *   If you prefer to keep the original image file, simply comment out or remove

 *   the line '@unlink( $file_path );' in the wpturbo_handle_upload_convert_to_webp function.

 *   This will preserve the original uploaded image file alongside the WebP version.

 */

add_filter('wp_handle_upload', 'wpturbo_handle_upload_convert_to_webp');

function wpturbo_handle_upload_convert_to_webp($upload) {

    if ($upload['type'] == 'image/jpeg' || $upload['type'] == 'image/png' || $upload['type'] == 'image/gif') {

        $file_path = $upload['file'];

        // Check if ImageMagick or GD is available

        if (extension_loaded('imagick') || extension_loaded('gd')) {

            $image_editor = wp_get_image_editor($file_path);

            if (!is_wp_error($image_editor)) {

                $file_info = pathinfo($file_path);

                $dirname   = $file_info['dirname'];

                $filename  = $file_info['filename'];

                // Create a unique file path for the WebP image

                $def_filename = wp_unique_filename($dirname, $filename . '.webp');

                $new_file_path = $dirname . '/' . $def_filename;

                // Attempt to save the image in WebP format

                $saved_image = $image_editor->save($new_file_path, 'image/webp');

                if (!is_wp_error($saved_image) && file_exists($saved_image['path'])) {

                    // Success: replace the uploaded image with the WebP image

                    $upload['file'] = $saved_image['path'];

                    $upload['url']  = str_replace(basename($upload['url']), basename($saved_image['path']), $upload['url']);

                    $upload['type'] = 'image/webp';

                    // Optionally remove the original image

                    @unlink($file_path);

                }

            }

        }

    }

    return $upload;

}