Yii2 Plupload extension, provides simple widgets.
Install package via composer : composer require indica/yii2-plupload:dev-master
Add this to your modules config :
'plupload' => [
'class' => 'indicalabs\plupload\Module',
],
Then go to http://your-app/plupload
<?= \indicalabs\plupload\widgets\UIWidget::widget([
'settings'=>[
'url'=>['/controller/action'],
],
]); ?>
To see the license to use actual plupload, see the below Released under GPLv2 License.