optipng-jpegoptim-php-cron

Recursively optimize jpg and png images

Install image utils (ubuntu)

sudo apt install jpegoptim
sudo apt install optipng

set work path in task_optipng_jpegoptim.php for example:

$path = '/var/www';

chmod +x task_optipng_jpegoptim.php && ln -s $_ /etc/cron.daily/.