Keep WordPress from Compressing JPGs

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<?php
add_filter('jpeg_quality', function($arg){return 100;});
?>

Instructions:

Place the snippet in WordPress functions.php file and you’re done!

Related links:

http://wplifeguard.com/keep-wordpress-from-compressing-jpgs/,http://www.skidoosh.co.uk/php/wordpress-jpeg-thumbnail-image-quality-setting-and-adjustment/